Boundary Atlas

ZIP code 92028: Fallbrook, CA

ZIP code 92028 is in Fallbrook (63% of residents) and Rainbow (3.6%), in San Diego County (100%) and Riverside County (<0.1%), California. 34% of its residents live outside city limits. It is in California's 49th congressional district (84%) and California's 48th congressional district (16%). Its state senate districts are State Senate District 40 (95%), State Senate District 38 (5.3%) and State Senate District 32 (<0.1%); its state house districts are Assembly District 75 (95%), Assembly District 74 (5.3%) and Assembly District 71 (<0.1%).

51,614residents (2020 Census)
116.7 sq miland area
4cities and towns
2congressional districts
44voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Fallbrook63%
Rainbow3.6%
Oceanside0.3%
Temecula<0.1%

CountyShare of ZIP residents
San Diego County100%
Riverside County<0.1%

Town or county subdivisionShare of ZIP residents
Fallbrook CCD92%
Pauma Valley CCD5.3%
Oceanside-Escondido CCD2.9%
Murrieta CCD<0.1%
Camp Pendleton CCD<0.1%

Congressional districts

Congressional districtShare of ZIP residents
California's 49th congressional district (CA-49)84%
California's 48th congressional district (CA-48)16%

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-49)Mike Levin (D)202-225-390684%
U.S. Representative (CA-48)Darrell Issa (R)202-225-567216%
U.S. SenatorAdam B. Schiff (D)202-224-3841statewide
U.S. SenatorAlex Padilla (D)202-224-3553 · contact formstatewide
State Senator (State Senate District 40)Brian Jones (R)760-796-465595%
State Senator (State Senate District 38)Catherine Blakespear (Democratic)949-598-58505.3%
State Senator (State Senate District 32)Kelly Seyarto (R)951-280-1260<0.1%
Assembly Member (Assembly District 75)Carl DeMaio (R)858-566-753895%
Assembly Member (Assembly District 74)Laurie Davies (R)949-240-73005.3%
Assembly Member (Assembly District 71)Kate Sanchez (R)951-696-0002<0.1%

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 4095%
State Senate District 385.3%
State Senate District 32<0.1%

State house districtShare of ZIP residents
Assembly District 7595%
Assembly District 745.3%
Assembly District 71<0.1%

Voting precincts

44 voting precincts overlap ZIP 92028. 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:92028")

ZIP 92028 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.