ZIP code 94553: Martinez, CA
ZIP code 94553 is in Martinez (75% of residents), Vine Hill (8.7%), Pacheco (8.4%), Mountain View (5.3%) and Alhambra Valley (1.6%), in Contra Costa County, California. It is in California's 10th congressional district (100%) and California's 8th congressional district (<0.1%). Its state senate district is State Senate District 9; its state house district is Assembly District 15.
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Martinez | 75% |
| Vine Hill | 8.7% |
| Pacheco | 8.4% |
| Mountain View | 5.3% |
| Alhambra Valley | 1.6% |
| County | Share of ZIP residents |
|---|---|
| Contra Costa County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Central Contra Costa CCD | 97% |
| Briones CCD | 2.6% |
| West Contra Costa CCD | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| California's 10th congressional district (CA-10) | 100% |
| California's 8th congressional district (CA-08) | <0.1% |
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
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-10) | Mark DeSaulnier (D) | 202-225-2095 | 100% |
| U.S. Representative (CA-08) | John Garamendi (D) | 202-225-1880 | <0.1% |
| U.S. Senator | Adam B. Schiff (D) | 202-224-3841 | statewide |
| U.S. Senator | Alex Padilla (D) | 202-224-3553 · contact form | statewide |
| State Senator (State Senate District 9) | Tim Grayson (Democratic) | 925-258-1176 | 100% |
| Assembly Member (Assembly District 15) | Anamarie Avila Farias (Democratic) | 925-521-1511 | 100% |
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
- Martinez website: http://www.cityofmartinez.org
- Martinez laws: search for the Martinez, California code of ordinances
- Vine Hill laws: search for the Vine Hill, California code of ordinances
- Pacheco laws: search for the Pacheco, California code of ordinances
- Contra Costa County website: https://www.contracosta.ca.gov/
- Contra Costa County laws: search for the Contra Costa County, California code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 9 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 15 | 100% |
Voting precincts
88 voting precincts overlap ZIP 94553. 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:94553")
ZIP 94553 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.