Boundary Atlas

ZIP code 94501: Alameda, CA

ZIP code 94501 is in Alameda, in Alameda County (100%) and San Francisco County (<0.1%), California. It is in California's 12th congressional district. Its state senate district is State Senate District 7; its state house district is Assembly District 18.

64,116residents (2020 Census)
8.0 sq miland area
1cities and towns
1congressional district
10voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Alameda100%

CountyShare of ZIP residents
Alameda County100%
San Francisco Countyland only

Town or county subdivisionShare of ZIP residents
Alameda CCD100%
Downtown-Northeast Neighborhoods-Treasure Island CCDland only

Congressional district

Congressional districtShare of ZIP residents
California's 12th congressional district (CA-12)100%
California's 11th congressional district (CA-11)land only

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CA-12)Lateefah Simon (D)202-225-2661100%
U.S. Representative (CA-11)Nancy Pelosi (D)202-225-4965<0.1%
U.S. SenatorAdam B. Schiff (D)202-224-3841statewide
U.S. SenatorAlex Padilla (D)202-224-3553 · contact formstatewide
State Senator (State Senate District 7)Jesse Arreguín (Democratic)510-286-1333100%
Assembly Member (Assembly District 18)Mia Bonta (Democratic)510-286-1670100%

Elected in 2024 under CA's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 7100%

State house districtShare of ZIP residents
Assembly District 18100%

Voting precincts

10 voting precincts overlap ZIP 94501. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:94501")

ZIP 94501 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.