California State Senate District 1

State Legislative District Profile (Upper Chamber)

Overview

District ID
ca-sd-001
State
California
Chamber
Upper chamber (state senate)
District Code
001
Land Area
31,659.4 sq mi
Water Area
751 sq mi

Boundary

Boundary of California State Senate District 1

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Siskiyou County6278.77 sq mi19.8%100.0%
Lassen County4541.34 sq mi14.3%100.0%
Modoc County3948.23 sq mi12.5%100.0%
Shasta County3775.52 sq mi11.9%100.0%
Tehama County2949.14 sq mi9.3%100.0%
Plumas County2553.06 sq mi8.1%100.0%
Butte County1636.49 sq mi5.2%100.0%
Glenn County1313.97 sq mi4.2%100.0%
Colusa County1150.71 sq mi3.6%100.0%
Sierra County953.17 sq mi3.0%100.0%
Nevada County890.26 sq mi2.8%93.0%
Yuba County632.01 sq mi2.0%100.0%
Sutter County602.70 sq mi1.9%100.0%
Placer County433.98 sq mi1.4%30.8%

Showing all 14 counties

Places

PlaceOverlapShare of district landShare of place land
Durham CDP81.69 sq mi0.3%100.0%
Redding city59.65 sq mi0.2%100.0%
Berry Creek CDP57.12 sq mi0.2%100.0%
Hat Creek CDP50.01 sq mi0.2%100.0%
Mineral CDP44.30 sq mi0.1%100.0%
Chico city34.14 sq mi0.1%99.3%
Janesville CDP33.81 sq mi0.1%100.0%
Palermo CDP29.16 sq mi0.1%100.0%
Concow CDP27.41 sq mi0.1%100.0%
Bella Vista CDP26.44 sq mi0.1%100.0%
Cohasset CDP25.05 sq mi0.1%100.0%
Shingletown CDP24.54 sq mi0.1%100.0%
Oroville East CDP21.60 sq mi0.1%100.0%
Butte Creek Canyon CDP20.52 sq mi0.1%100.0%
Loma Rica CDP18.49 sq mi0.1%100.0%
Paradise town18.32 sq mi0.1%100.0%
Butte Valley CDP18.29 sq mi0.1%100.0%
Manton CDP17.70 sq mi0.1%100.0%
Warner Valley CDP17.40 sq mi0.1%100.0%
Happy Valley CDP16.87 sq mi0.1%99.8%
Yuba City city14.98 sq mi<0.1%90.4%
Magalia CDP14.02 sq mi<0.1%100.0%
Forest Ranch CDP13.93 sq mi<0.1%100.0%
Oroville city13.83 sq mi<0.1%99.5%
Johnsville CDP13.76 sq mi<0.1%100.0%

Showing top 25 of 239 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 1764,57881.1%100.0%83.4%
CA District 3178,53018.9%23.3%16.6%

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

Demographics

Total Population
937,889 (± 1,874)
Median Age
40.3
Median Household Income
$72,530 (± $1,000)
High School Graduate or Higher (age 25+)
88.7%
Bachelor's Degree or Higher (age 25+)
25.5%

Population by Age

GroupPeopleShare
Under 18202,78321.6%
18 to 64538,82157.5%
65 and over196,28520.9%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)200,89921.4%
White, not Hispanic602,09564.2%
Black, not Hispanic14,1901.5%
Asian, not Hispanic47,6335.1%
American Indian / Alaska Native, not Hispanic9,3931.0%
Native Hawaiian / Pacific Islander, not Hispanic2,3120.2%
Some other race, not Hispanic6,3460.7%
Two or more races, not Hispanic55,0215.9%

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
891,168
Citizen Voting Age Population (CVAP)
691,699

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic722,64381.1%
Hispanic168,52118.9%
White616,19169.1%
Black14,5371.6%
Asian40,6824.6%
American Indian / Alaska Native9,4271.1%
Native Hawaiian / Pacific Islander2,1380.2%
Two or More Races4,8800.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic584,85284.6%
Hispanic106,84315.4%
White509,73473.7%
Black16,1202.3%
Asian34,5445.0%
American Indian / Alaska Native20,6503.0%
Native Hawaiian / Pacific Islander1,5990.2%
Two or More Races2,6070.4%

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