ZIP code 95423: Clearlake Oaks, CA
ZIP code 95423 is in Clearlake Oaks (60% of residents) and Spring Valley (23%), in Lake County, California. 17% of its residents live outside city limits. It is in California's 1st congressional district (100%) and California's 4th congressional district (0.2%). Its state senate district is State Senate District 2; its state house district is Assembly District 4.
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Clearlake Oaks | 60% |
| Spring Valley | 23% |
| County | Share of ZIP residents |
|---|---|
| Lake County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Lucerne-Clearlake Oaks CCD | 94% |
| Clearlake CCD | 6.4% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| California's 1st congressional district (CA-01) | 100% |
| California's 4th congressional district (CA-04) | 0.2% |
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-01) | James Gallagher (R) | 202-225-3076 | 100% |
| U.S. Representative (CA-04) | Mike Thompson (D) | 202-225-3311 | 0.2% |
| 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 2) | Mike McGuire (Democratic) | 707-468-8914 | 100% |
| Assembly Member (Assembly District 4) | Cecilia Aguiar-Curry (Democratic) | 530-757-1034 | 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
- Clearlake Oaks laws: search for the Clearlake Oaks, California code of ordinances
- Spring Valley laws: search for the Spring Valley, California code of ordinances
- Lake County website: https://www.lakecountyca.gov/
- Lake County laws: search for the Lake County, California code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 2 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 4 | 100% |
Voting precincts
6 voting precincts overlap ZIP 95423. 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:95423")
ZIP 95423 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.