Boundary Atlas

ZIP code 92821: Brea, CA

ZIP code 92821 is in Brea, in Orange County, California. It is in California's 41st congressional district (74%) and California's 38th congressional district (26%). Its state senate district is State Senate District 30; its state house district is Assembly District 59.

41,335residents (2020 Census)
14.1 sq miland area
1cities and towns
2congressional districts
23voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Brea100%

CountyShare of ZIP residents
Orange County100%

Town or county subdivisionShare of ZIP residents
Anaheim-Santa Ana-Garden Grove CCD100%

Congressional districts

Congressional districtShare of ZIP residents
California's 41st congressional district (CA-41)74%
California's 38th congressional district (CA-38)26%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CA-41)Ken Calvert (R)202-225-198674%
U.S. Representative (CA-38)Linda T. Sánchez (D)202-225-667626%
U.S. SenatorAdam B. Schiff (D)202-224-3841statewide
U.S. SenatorAlex Padilla (D)202-224-3553 · contact formstatewide
State Senator (State Senate District 30)Bob Archuleta (Democratic)562-406-1001100%
Assembly Member (Assembly District 59)Phillip Chen (R)714-529-5502100%

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 30100%

State house districtShare of ZIP residents
Assembly District 59100%

Voting precincts

23 voting precincts overlap ZIP 92821. Map them, with each precinct's share of the ZIP's residents.

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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:92821")

ZIP 92821 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.