California Assembly District 12

State Legislative District Profile (Lower Chamber)

Overview

District ID
ca-hd-012
State
California
Chamber
Lower chamber
District Code
012
Land Area
911.1 sq mi
Water Area
325.4 sq mi

Boundary

Boundary of California Assembly District 12

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Marin County520.42 sq mi57.1%100.0%
Sonoma County391.61 sq mi43.0%24.9%
San Francisco County0.01 sq mi<0.1%<0.1%

Showing all 3 counties

Places

PlaceOverlapShare of district landShare of place land
Novato city27.47 sq mi3.0%100.0%
Santa Rosa city17.15 sq mi1.9%40.3%
San Rafael city16.59 sq mi1.8%100.0%
Petaluma city14.41 sq mi1.6%100.0%
Bloomfield CDP8.14 sq mi0.9%100.0%
Rohnert Park city7.29 sq mi0.8%100.0%
Inverness CDP6.40 sq mi0.7%100.0%
Bolinas CDP5.83 sq mi0.6%100.0%
Lucas Valley-Marinwood CDP5.73 sq mi0.6%100.0%
Kenwood CDP5.17 sq mi0.6%100.0%
Mill Valley city4.78 sq mi0.5%100.0%
Tamalpais-Homestead Valley CDP4.69 sq mi0.5%100.0%
Tiburon town4.48 sq mi0.5%99.8%
Lagunitas-Forest Knolls CDP4.25 sq mi0.5%100.0%
Penngrove CDP4.03 sq mi0.4%100.0%
Santa Venetia CDP3.66 sq mi0.4%100.0%
Point Reyes Station CDP3.62 sq mi0.4%100.0%
Corte Madera town3.16 sq mi0.3%100.0%
Kentfield CDP3.03 sq mi0.3%100.0%
Larkspur city3.00 sq mi0.3%100.0%
Dillon Beach CDP2.98 sq mi0.3%100.0%
Sleepy Hollow CDP2.97 sq mi0.3%100.0%
Black Point-Green Point CDP2.83 sq mi0.3%100.0%
San Anselmo town2.68 sq mi0.3%100.0%
Fairfax town2.23 sq mi0.2%100.0%

Showing top 25 of 43 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
CA District 2339,11169.8%44.3%70.7%
CA District 4147,03730.2%19.2%29.3%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Demographics

Total Population
480,388 (± 3,202)
Median Age
44.7
Median Household Income
$122,418 (± $1,977)
High School Graduate or Higher (age 25+)
90.8%
Bachelor's Degree or Higher (age 25+)
50.2%

Population by Age

GroupPeopleShare
Under 1892,78819.3%
18 to 64281,40358.6%
65 and over106,19722.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)119,00524.8%
White, not Hispanic292,34560.9%
Black, not Hispanic9,3621.9%
Asian, not Hispanic27,4915.7%
American Indian / Alaska Native, not Hispanic7300.2%
Native Hawaiian / Pacific Islander, not Hispanic9910.2%
Some other race, not Hispanic4,3870.9%
Two or more races, not Hispanic26,0775.4%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
436,100
Citizen Voting Age Population (CVAP)
346,195

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic346,63979.5%
Hispanic89,46120.5%
White294,11767.4%
Black9,0222.1%
Asian23,1195.3%
American Indian / Alaska Native7190.2%
Native Hawaiian / Pacific Islander6370.1%
Two or More Races2,0800.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic290,19283.8%
Hispanic56,00316.2%
White250,94872.5%
Black9,6162.8%
Asian24,1997.0%
American Indian / Alaska Native3,4261.0%
Native Hawaiian / Pacific Islander5100.1%
Two or More Races1,6220.5%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).