Summary Description of California's 2011 State Senate Districts

The maps below show districts for California's State Senate delegation. There are forty members in the delegation representing forty senate districts.

District population statistics, Excel .xls of the tables

County & City splits, Excel .xls files for the city splits and county splits

District boundary files

2010 Census Block, ZIP code and precinct to district equivalencies

District Summaries & Maps:

Please Note: Registration data below are from the 15-Day Close Report for the November 6, 2012 General Election and race and ethnicity data are from the 2005-2009 American Community Survey 5-Year Estimates. 

District 1 (29.00% Democratic, 44.85% Re/publican, 20.48% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.43% or 3,987 out of 931,349. The ethnicity in this district is % Latino, 79.41% White, % Black, and 4.59% Asian. The 2011 1st Senate District includes the counties of Siskiyou, Nevada, Lassen, Modoc, El Dorado, Sierra, and Shasta. It excludes the counties of Mono, Calaveras, Amador, and Sacramento counties that were part of 1st Senate District in 2001. Cities include: Redding, Folsom, Dorris, Fort Jones, Colfax, and Placerville. 84% of this senate district is made up of assembly districts 1 and 6.

District 2 (49.14% Democratic, 22.29% Re/publican, 22.31% No Party Preference) - MAP

The deviation from the ideal population is -0.35% or -3,272 out of 931,349. The ethnicity in this district is 19.53% Latino, 69.94% White, 2.10% Black, and 4.29% Asian. The 2011 2nd Senate District includes the counties of Del Norte, Humboldt, Lake, Mendocino, Trinity, Marin, and almost three-fourths of Sonoma. It excludes the counties of Solano and Napa that were part of 2nd Senate District in 2001. Cities include: Tiburon, Arcata, Novato, Sebastopol, Corte Madera, and Ukiah.  90% of this senate district is made up of assembly districts 2 and 10.

District 3 (48.39% Democratic, 24.65% Re/publican, 22.01% No Party Preference) - MAP

The deviation from the ideal population is -0.34% or -3,182 out of 931,349. The ethnicity in this district is 24.98% Latino, 51.52% White, 8.01% Black, and 12.48% Asian. The 2011 3rd Senate District includes the counties of Napa, Solano, approximately three-fourths of Yolo, slightly over one-fourth of Sonoma, and tiny portions of Contra Costa and Sacramento. It excludes the counties of Sonoma, Marin, and San Francisco. Cities include: Vallejo, Napa, Davis, Dixon, Vacaville, Rio Vista, and Winters. 65% of this senate district is made up of assembly districts 4 and 11.

District 4 (34.14% Democratic, 40.57% Re/publican, 19.70% No Party Preference) - MAP | DETAILED MAP 1 | DETAILED MAP 2

The deviation from the ideal population is 0.71% or 6,613 out of 931,349. The ethnicity in this district is 19.73% Latino, 65.92% White, 3.78% Black, and 6.98% Asian. The 2011 4th Senate District includes the counties of Tehama, Glenn, Colusa, Yuba, Sutter, Placer, Butte, and approximately one-fifth of Sacramento. It excludes the counties of Shasta, Trinity, Siskiyou, and Del Norte that were part of 4th Senate District in 2001. Cities include: Roseville, Chico, Yuba City, Colusa, Live Oak, and Paradise. 74% of this senate district is made up of assembly districts 3 and 8.

District 5 (42.48% Democratic, 37.53% Re/publican, 15.76% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.84% or 7,814 out of 931,349. The ethnicity in this district is 37.77% Latino, 40.18% White, 13.12% Black, and 12.56% Asian. The 2011 5th Senate District includes all of San Joaquin County, less than one percent of Sacramento County, and 44.2% of Stanislaus County. It excludes the counties of Yolo and Solano that were part of 5th Senate District in 2001. Cities include: Stockton, Modesto, Tracy, Lodi, Galt, Riverbank, Ripon, and Escalon. 84% of this senate district is made up of assembly districts 12 and 13.

District 6 (49.07% Democratic, 26.74% Re/publican, 19.80% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.53% or 4,952 out of 931,349. The ethnicity in this district is 20.95% Latino, 38.66% White, 6.14% Black, and 19.08% Asian. The 2011 6hh Senate District is composed of over half of Sacramento county and almost one-fourth of Yolo County. The 2001 6hh Senate District excluded Yolo County. It is comprised of the cities of Sacramento and Elk Grove. 80% of this senate district is made up assembly districts 7 and 8.

District 7 (44.12% Democratic, 29.40% Re/publican, 21.26% No Party Preference) - MAP

The deviation from the ideal population is -0.71% or -6,641 out of 931,349. The ethnicity in this district is 20.95% Latino, 54.65% White, 4.07% Black, and 15.92% Asian. The 2011 7th Senate District is composed of the counties of Contra Costa and Alameda. The 2001 7th Senate District excluded Alameda County. Cities include: Concord, Walnut Creek, Oakley, Orinda, Clayton, and Moraga. 75% of this senate district is comprised of assembly districts 14 and 16.

District 8 (34.23% Democratic, 43.34% Re/publican, 17.01% No Party Preference) - MAP | DETAILED MAP 1 | DETAILED MAP 2 | DETAILED MAP 3

The deviation from the ideal population is -0.18% or -1,637 out of 931,349. The ethnicity in this district is 28.22% Latino, 56.00% White, 4.07% Black, and 8.72% Asian. The 2011 8th Senate District includes the counties of Sacramento, Stanislaus, Inyo, Tulare, Calaveras, Amador, Madera, Tuolumne, and Fresno. The 2001 8th Senate District was composed of the counties of San Francisco and San Mateo. Cities include: Sutter Creek, Amador, Clovis, Turlock, Oakdale, Angles, and Jackson. 71% of this senate district is made up of assembly districts 23 and 5.

District 9 (63.87% Democratic, 8.47% Re/publican, 18.88% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.99% or 9,252 out of 931,349. The ethnicity in this district is 23.94% Latino, 31.82% White, 19.81% Black, and 21.62% Asian. The 2011 9th Senate District includes 45.9% of Contra Costa County and 23.5% of Alameda County. The 2001 9th Senate District was composed of a smaller geographic area of the counties of Contra Costa and Alameda. Cities include: Oakland, Berkeley, Pinole, Piedmont, San Pablo, and Hercules. 99% of this senate district is made up of assembly districts 15 and 18.

District 10 (50.50% Democratic, 17.33% Re/publican, 25.24% No Party Preference) - MAP | DETAILED MAP 1 | DETAILED MAP 2

The deviation from the ideal population is -0.82% or -7,642 out of 931,349. The ethnicity in this district is 24.33% Latino, 25.41% White, 5.98% Black, and 41.12% Asian. The 2011 10th Senate District is composed 45.9% of Alameda County and 17.4% of Santa Clara County. The 2001 10th Senate District included different parts of the counties of Alameda and Santa Clara. Cities include: Fremont, Hayward, San Jose, Santa Clara, Union City, and Milpitas. 97% of this senate district is made up of assembly districts 20 and 25.

District 11 (55.66% Democratic, 9.09% Re/publican, 30.75% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is -0.05% or -496 out of 931,349. The ethnicity in this district is 16.27% Latino, 38.30% White, 5.81% Black, and 37.38% Asian. The 2011 11th Senate District is composed of all of San Francisco County and 17.5% of San Mateo County. It excludes the county of Santa Clara which was part of 11th Senate District in 2001. This district is comprised of the cities of San Francisco, Daly City, and Colma. 100% of this district is made up of assembly districts 17 and 19.

District 12 (46.72% Democratic, 31.65% Re/publican, 17.05% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.20% or 1,873 out of 931,349. The ethnicity in this district is 64.48% Latino, 25.68% White, 3.00% Black, and 5.12% Asian. The 2011 12th Senate District includes all of Merced and San Benito Counties, the majority of Madera, and parts of Fresno, Stanislaus, and Monterey. It includes Fresno County which was not a part of 12th Senate District in 2001. Cities include: Salinas, Merced, Ceres, Kerman, Livingston, Fowler, Huron, and Gustine. 72% of this senate district is comprised of assembly districts 21 and 30.

District 13 (49.38% Democratic, 20.34% Re/publican, 26065% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is -0.42% or -3,869 out of 931,349. The ethnicity in this district is 21.85% Latino, 47.57% White, 2.57% Black, and 25.28% Asian. The 2011 13th Senate District is composed of 82.5% of San Mateo County and 18.8% of Santa Clara County. It includes Santa Clara County which was not a part of 13th Senate District in 2001. Cities include: Sunnyvale, San Mateo, Belmont, Menlo Park, Brisbane, and Hillsborough. 99% of this senate district is made up of assembly districts 22 and 24.

District 14 (48.46% Democratic, 30.88% Re/publican, 16.81% No Party Preference) - MAP | DETAILED MAP 1 | DETAILED MAP 2

The deviation from the ideal population is 0.43% or 4,027 out of 931,349. The ethnicity in this district is 71.16% Latino, 17.87% White, 4.75% Black, and 4.74% Asian. The 2011 14th Senate District is located within areas of the counties of Kern, Fresno, Tulare, and all of Kings. Excludes the counties of Stanislaus, Tuolomne, Mariposa, and Madera which were part of 14th Senate District in 2001. Cities include: Farmersville, Orange Cove, Wasco, Woodlake and parts of Fresno and Bakersfield. 77% of this senate district is made up of assembly districts 31 and 32.

District 15 (45.27% Democratic, 22.35% Re/publican, 28.70% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is -0.30% or -2,765 out of 931,349. The ethnicity in this district is 30.04% Latino, 34.28% White, 2.74% Black, and 31.18% Asian. The 2011 15th Senate District is composed of approximately over one-half of Santa Clara County. It excludes the counties of Monterey, San Luis Obispo, and Santa Cruz, which were part of 15th Senate District in 2001. Cities include: San Jose, Cupertino, Campbell, Saratoga, Los Gatos, and Monte Sereno. 93% of this senate district is made up of assembly districts 27 and 28.

District 16 (29.73% Democratic, 46.20% Re/publican, 18.88% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is -0.99% is -9,226 out of 931,349. The ethnicity in this district is 35.72% Latino, 52.04% White, 5.13% Black, and 4.41% Asian. The 2011 16th Senate District is located in Los Angeles County. It excludes the counties of Kern, Tulare, Inyo, and San Bernardino, which were part of 16th Senate District in 2001.  Cities include: Visalia, Exeter, Maricopa, Taft, Yucca Valley, and Ridgecrest. 76% of this senate district is comprised of assembly districts 26 and 34.

District 17 (44.47% Democratic, 27.82% Re/publican, 22.10% No Party Preference) - MAP | DETAILED MAP

The deviation from the ideal population is 0.00% or -8 out of 931,349. The ethnicity in this district is 30.95% Latino, 56.49% White, 2.33% Black, and 8.06% Asian. The 2011 17th Senate District is composed of all of San Luis Obispo and Santa Cruz counties and also includes 11.7% of Santa Clara and 45.8% of Monterey. It excludes the counties of Ventura, Los Angeles, and San Bernardino, which composed 17th Senate District in 2001. Cities include: Watsonville, Santa Cruz, Pismo Beach, Gilroy, Arroyo Grande, and Capitola. 74% of this senate district is comprised of assembly districts 29 and 35.

District 18 (53.01% Democratic, 17.94% Re/publican, 19.40% No Party Preference) - MAP

The deviation from the ideal population is -0.28% or -2,624 out of 931,349. The ethnicity in this district is 56.53% Latino, 29.05% White, 4.23% Black, and 8.93% Asian. The 2011 18th Senate District is composed of 9.5% of Los Angeles County. It excludes the counties of San Bernardino, Inyo, Kern, and Tulare, which were part of 18th Senate District in 2001. The district is comprised of the cities of Los Angeles, San Fernando, and Burbank. 90% of this senate district is made up of assembly districts 39 and 46.

District 19 (42.86% Democratic, 30.92% Re/publican, 21.00% No Party Preference) - MAP

The deviation from the ideal population is -0.27% or -2,499 out of 931,349. The ethnicity in this district is 48.28% Latino, 42.19% White, 2.06% Black, and 5.85% Asian. The 2011 19th Senate District is composed of all of Santa Barbara County and 61.3% of Ventura County. It excludes Los Angeles County, which was part of 19th Senate District in 2001. Cities include: Goleta, Santa Barbara, Fillmore, Ojai, Lompoc, and Santa Maria. 78% of this senate district is made up of assembly districts 37 and 44.

District 20 (48.30% Democratic, 26.66% Re/publican, 19.99% No Party Preference) - MAP

The deviation from the ideal population is 0.49% or 4,586 out of 931,349. The ethnicity in this district is 68.41% Latino, 15.74% White, 8.45% Black, and 6.02% Asian. The 2011 20th Senate District is composed of the counties of San Bernardino and Los Angeles. It includes San Bernardino County, which was excluded from 20th Senate District in 2001. Cities include: Fontana, Montclair, Chino, Rialto, Pomona, and Grand Terrace.  100% of this senate district is comprised of assembly districts 47 and 52.

District 21 (36.36% Democratic, 38.20% Re/publican, 17.22% No Party Preference) - MAP

The deviation from the ideal population is -0.11% or -1,067 out of 931,349. The ethnicity in this district is 40.73% Latino, 39.99% White, 11.73% Black, and 5.47% Asian. The 2011 21th Senate District is composed of 6.1% of San Bernardino County and 16.3% of Los Angeles County. It includes San Bernardino County, which was excluded from 21th Senate District in 2001. Cities include: Lancaster, Palmdale, Victorville, Hesperia, Apple Valley, and Adelanto. 78% of this senate district is made up of assembly districts 33 and 36.

District 22 (46.40% Democratic, 22.89% Re/publican, 22.68% No Party Preference) - MAP

The deviation from the ideal population is -0.22% or -2,051 out of 931,349. The ethnicity in this district is 53.44% Latino, 12.16% White, 1.56% Black, and 31.97% Asian. The 2011 22th Senate District is composed of a small portion of Los Angeles County and includes the cities of Monterey Park, Covina, Arcadia, and West Covina. It excludes the cities of Alhambra, San Marino, and Vernon, which were part of 22th Senate District in 2001. 89% of this senate district is made up of assembly districts 48 and 49.

District 23 (34.20% Democratic, 41.54% Re/publican, 18.91% No Party Preference) - MAP

The deviation from the ideal population is 0.26% or 2,458 out of 931,349. The ethnicity in this district is 37.96% Latino, 45.51% White, 7.77% Black, and 6.47% Asian. The 2011 23th Senate District is located in the small areas of the counties of Los Angeles, Riverside, and San Bernardino. It excludes Ventura County, which was part of 23th Senate District in 2001.  Cities include: Rancho Cucamonga, Hemet, Loma Linda, Big Bear Lake, and Redlands. 75% of this senate district is made up of assembly districts 40 and 42.

District 24 (58.57% Democratic, 11.76% Re/publican, 20.16% No Party Preference) - MAP

The deviation from the ideal population is 0.23% or 2,161 out of 931,349. The ethnicity in this district is 66.72% Latino, 11.98% White, 3.11% Black, and 17.23% Asian. The 2011 24th Senate District located within 9.5% of Los Angeles County and is composed of the cities of Los Angeles and Monterey Park. It excludes the cities of Rosemead, Irwindale, Azusa, and Industry, which were part of 24th Senate District in 2001. 89% of this senate district is comprised of assembly districts 51 and 53.

District 25 (41.52% Democratic, 31.37% Re/publican, 19.03% No Party Preference) - MAP

The deviation from the ideal population is -0.47% or -4,414 out of 931,349. The ethnicity in this district is 25.97% Latino, 52.19% White, 5.17% Black, and 15.19% Asian. The 2011 25th Senate District located within small areas of Los Angeles and San Bernardino counties. It includes the cities of Glendale, Burbank, South Pasadena, Arcadia, San Dimas, and Claremont. It excludes the cities of Rolling Hills and Rolling Hills Estates, which were part of 25th Senate District in 2001. 84% of this senate district is made up of assembly districts 41 and 43.

District 26 (46.56% Democratic, 24.13% Re/publican, 19.60% No Party Preference) - MAP

The deviation from the ideal population is -0.39% or -3,592 out of 931,349. The ethnicity in this district is 13.62% Latino, 64.87% White, 3.96% Black, and 15.85% Asian. The 2011 26th Senate District located within 9.4% of Los Angeles County. It includes the cities of Beverly Hills, West Hollywood, Manhattan Beach, Torrance, and Rolling Hills Estates. It excludes the cities of Culver and los Angeles, which were part of 26th Senate District in 2001. 75% of this senate district is made up of assembly districts 50 and 66.

District 27 (41.07% Democratic, 33.48% Re/publican, 18.37% No Party Preference) - MAP

The deviation from the ideal population is 0.46% or 4,307 out of 931,349. The ethnicity in this district is 24.84% Latino, 58.17% White, 3.03% Black, and 12.47% Asian. The 2011 27th Senate District is comprised of 6.3% of Los Angeles County and 38.7% of Ventura County. Cities include: Thousand Oaks, Moorpark, Simi Valley, Malibu, Hidden Hills, and Westlake Village. It excludes the cities of Long Beach, Cerritos, Downey, and Lynwood, which were part of 27th Senate District in 2001. 71% of this senate district is composed of assembly districts 38 and 45.

District 28 (33.96% Democratic, 42.35% Re/publican, 18.66% No Party Preference) - MAP

The deviation from the ideal population is -0.14% or -1,277 out of 931,349. The ethnicity in this district is 40.85% Latino, 47.63% White, 3.96% Black, and 5.79% Asian. The 2011 28th Senate District is located within 42.5% of Riverside County. It excludes Los Angeles County, where 28th Senate District was located in 2001. Cities include: Murrieta, Temecula, Indio, Palm Springs, Coachella, and La Quinta. 66% of this senate district is made up of assembly districts 56 and 67.

District 29 (33.84% Democratic, 38.06% Re/publican, 23.03% No Party Preference) - MAP

The deviation from the ideal population is -0.63% or -5,855 out of 931,349. The ethnicity in this district is 36.61% Latino, 31.73% White, 2.74% Black, and 27.39% Asian. The 2011 29th Senate District is located within portions of the counties of Los Angeles, Orange, and San Bernardino. It is comprised of the cities of Fullerton, Chino Hills, Cypress, Walnut, and La Palma. It excludes the cities of Arcadia, Glendora, San Dimas, and Sierra Madre, which were part of 29th Senate District in 2001. 93% of this senate district is made up of assembly districts 55 and 65.

District 30 (67.41% Democratic, 8.61% Re/publican, 15.44% No Party Preference) - MAP

The deviation from the ideal population is -0.95% or -8,853 out of 931,349. The ethnicity in this district is 50.04% Latino, 14.05% White, 27.90% Black, and 6.30% Asian. The 2011 30th Senate District located within 9.4% of Los Angeles County. It is comprised of the cities of Los Angeles, Inglewood, and Culver City. It excludes the cities of Pico Riviera, Bell Gardens, La Mirada, and Whittier, which were part of 30th Senate District in 2001. 81% of this senate district is composed of assembly districts 54 and 59.

District 31 (39.99% Democratic, 38.55% Re/publican, 17.16% No Party Preference) - MAP

The deviation from the ideal population is 0.99% or 9,263 out of 931,349. The ethnicity in this district is 52.40% Latino, 28.71% White, 9.17% Black, and 7.85% Asian. The 2011 31th Senate District located within 43% of Riverside County and includes Riverside, Moreno Valley, Corona, Perris and Norco. It excludes the cities of Redlands and Yucaipa which were part of 31th Senate District in 2001. 100% of this senate district is made up of assembly districts 60 and 61.

District 32 (48.37% Democratic, 26.41% Re/publican, 18.01% No Party Preference) - MAP

The deviation from the ideal population is 0.22% or 2,057 out of 931,349. The ethnicity in this district is 60.92% Latino, 19.17% White, 3.71% Black, and 14.86% Asian. The 2011 32th Senate District is comprised of small portions of both Los Angeles and Orange counties. It excludes the counties of Pomona, Montclair, Rialto, and San Bernardino, which were part of 32th Senate District in 2001. Cities include: Downey, Whittier, Pico Rivera, Cerritos, Artesia, Santa Fe Springs, and Commerce. 86% of this senate district is composed of assembly districts 57 and 58.

District 33 (57.60% Democratic, 15.77% Re/publican, 17.40% No Party Preference) - MAP

The deviation from the ideal population is -0.47% or -4,377 out of 931,349. The ethnicity in this district is 69.98% Latino, 13.00% White, 8.87% Black, and 6.51% Asian. The 2011 33th Senate District located within 9.4% of Los Angeles County. It excludes Orange County, which composed 33th Senate District in 2001. Cities include: Lynwood, Paramount, Lakewood, Maywood, and Bell. 75% of this senate district is made up of assembly districts 63 and 70.

District 34 (37.97% Democratic, 35.94% Re/publican, 21.36% No Party Preference) - MAP

The deviation from the ideal population is -0.37% or -3,456 out of 931,349. The ethnicity in this district is 46.85% Latino, 29.00% White, 1.40% Black, and 21.36% Asian. The 2011 34th Senate District is located within a portion of Orange County and a tiny section of Los Angeles County. It includes the cities of Seal Beach, Los Alamitos, Fountain Valley, and Huntington Beach. The district excludes the city of Stanton, which was part of 34th Senate District in 2001. 93% of this district is made up of assembly districts 69 and 72.

District 35 (61.41% Democratic, 14.92% Re/publican, 16.22% No Party Preference) - MAP

The deviation from the ideal population is 0.35% or 3,266 out of 931,349. The ethnicity in this district is 52.97% Latino, 11.41% White, 21.31% Black, and 11.95% Asian. The 2011 35th Senate District is located within 9.5% of Los Angeles County. It excludes Orange County, which composed 35th Senate District in 2001. It is comprised of the cities of Compton, Carson, Hawthorne, Lawndale, and Gardena. 69% of this senate district is composed of assembly districts 62 and 64.

District 36 (27.63% Democratic, 43.91% Re/publican, 23.38% No Party Preference) - MAP

The deviation from the ideal population is 0.72% or 6,734 out of 931,349. The ethnicity in this district is 23.75% Latino, 63.43% White, 2.48% Black, and 8.33% Asian. The 2011 36th Senate District is composed of a southern portion of Orange County and a northern portion of San Diego County. It excludes Riverside County, which was a part of 36th Senate District in 2001. Cities include: Oceanside, Carlsbad, Encinitas, Dana Point, Laguna Hills, San Clemente, and Aliso Viejo. 99% of this senate district is comprised of assembly districts 73 and 76.

District 37 (28.79% Democratic, 42.78% Re/publican, 23.62% No Party Preference) - MAP

The deviation from the ideal population is 0.71% or 6,637 out of 931,349. The ethnicity in this district is 21.67% Latino, 56.00% White, 1.56% Black, and 19.20% Asian. The 2011 37th Senate District Is located within 31.2% of Orange County. It excludes Riverside County, which composed 37th Senate District in 2001. Cities include: Irvine, Costa Mesa, Newport Beach, Laguna Beach, Lake Forest, and Orange. 99% of this senate district is made up of assembly districts 68 and 74.

District 38 (28.30% Democratic, 43.35% Re/publican, 23.01% No Party Preference) - MAP

The deviation from the ideal population is -0.17% or -1,589 out of 931,349. The ethnicity in this district is 27.22% Latino, 58.52% White, 3.72% Black, and 8.02% Asian. The 2011 38th Senate District is located in the eastern portion of San Diego County. It excludes Orange County, which was a part of 38th Senate District in 2001. Cities include: Escondido, El Cajon, San Marcos, Santee, Poway, and Lemon Grove. 76% of this senate district is comprised of assembly districts 71 and 75.

District 39 (37.65% Democratic, 29.44% Re/publican, 27.64% No Party Preference) - MAP

The deviation from the ideal population is -0.35% or -3,305 out of 931,349. The ethnicity in this district is 16.88% Latino, 59.22% White, 5.08% Black, and 16.60% Asian. The 2011 39th Senate District located within 30% of San Diego county includes the cities of Solana Beach and Coronado, which were not part of 39th Senate District in 2001. This district also includes the city of Del Mar. 81% of this senate district is made up of assembly districts 77 and 78.

District 40 (46.56% Democratic, 23.87% Re/publican, 25.22% No Party Preference) - MAP

The deviation from the ideal population is 0.40% or 3,706 out of 931,349. The ethnicity in this district is 62.28% Latino, 16.39% White, 7.27% Black, and 12.07% Asian. The 2011 40th Senate District is comprised of all of Imperial County and 24.6% of San Diego County. It excludes Riverside County, which was a part of 40th Senate District in 2001. This district is comprised of the cities of Calexico, Holtville, Westmorland, Brawley, El Centro, and Chula Vista. 72% of this senate district is made up of assembly districts 79 and 80.