ZIP code 92003: Bonsall, CA
ZIP code 92003 is in Bonsall (79% of residents), in San Diego County, California. 21% of its residents live outside city limits. It is in California's 49th congressional district (95%) and California's 48th congressional district (4.5%). Its state senate districts are State Senate District 40 (90%) and State Senate District 38 (9.6%); its state house districts are Assembly District 75 (90%), Assembly District 74 (5.1%) and Assembly District 76 (4.5%).
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Bonsall | 79% |
| Oceanside | 0.3% |
| County | Share of ZIP residents |
|---|---|
| San Diego County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Fallbrook CCD | 90% |
| Oceanside-Escondido CCD | 9.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| California's 49th congressional district (CA-49) | 95% |
| California's 48th congressional district (CA-48) | 4.5% |
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.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 40 | 90% |
| State Senate District 38 | 9.6% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 75 | 90% |
| Assembly District 74 | 5.1% |
| Assembly District 76 | 4.5% |
Voting precincts
8 voting precincts overlap ZIP 92003. 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:92003")
ZIP 92003 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.