ZIP code 94574: St. Helena, CA
ZIP code 94574 is in St. Helena (65% of residents) and Deer Park (13%), in Napa County (100%) and Sonoma County (0.2%), California. 22% of its residents live outside city limits. It is in California's 4th congressional district. Its state senate districts are State Senate District 3 (100%) and State Senate District 2 (0.2%); its state house districts are Assembly District 4 (100%) and Assembly District 2 (0.2%).
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| St. Helena | 65% |
| Deer Park | 13% |
| County | Share of ZIP residents |
|---|---|
| Napa County | 100% |
| Sonoma County | 0.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| St. Helena CCD | 80% |
| Angwin CCD | 17% |
| Lake Berryessa CCD | 2.1% |
| Napa CCD | 0.6% |
| Santa Rosa CCD | 0.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| California's 4th congressional district (CA-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Paul Dohring | 65% | |
| U.S. Representative (CA-04) | Mike Thompson (D) | 202-225-3311 | 100% |
| 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 3) | Christopher Cabaldon (Democratic) | 707-454-3808 | 100% |
| State Senator (State Senate District 2) | Mike McGuire (Democratic) | 707-468-8914 | 0.2% |
| Assembly Member (Assembly District 4) | Cecilia Aguiar-Curry (Democratic) | 530-757-1034 | 100% |
| Assembly Member (Assembly District 2) | Chris Rogers (Democratic) | 707-576-2526 | 0.2% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- St. Helena laws: search for the St. Helena, California code of ordinances
- Deer Park laws: search for the Deer Park, California code of ordinances
- Napa County website: https://www.napacounty.gov/
- Napa County laws: search for the Napa County, California code of ordinances
- Sonoma County website: https://sonomacounty.gov/
- Sonoma County laws: search for the Sonoma County, California code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 3 | 100% |
| State Senate District 2 | 0.2% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 4 | 100% |
| Assembly District 2 | 0.2% |
Voting precincts
14 voting precincts overlap ZIP 94574. 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:94574")
ZIP 94574 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.