Lancaster, California
Lancaster is a city in Los Angeles County, California, with 173,516 residents in 2020. It spans 2 congressional districts: CA-27 (95%) and CA-26 (5.0%). It spans 2 state house districts. Its state senate district is State Senate District 23.
County
| County | Share of residents |
|---|---|
| Los Angeles County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| California's 27th congressional district (CA-27) | 95% |
| California's 26th congressional district (CA-26) | 5.0% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-27) | George Whitesides (D) | 202-225-1956 | 95% |
| U.S. Representative (CA-26) | Julia Brownley (D) | 202-225-5811 | 5.0% |
| 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 23) | Suzette Valladares (R) | 661-729-6232 | 100% |
| Assembly Member (Assembly District 39) | Juan Carrillo (Democratic) | 661-266-3908 | 67% |
| Assembly Member (Assembly District 34) | Tom Lackey (R) | 661-267-7636 | 33% |
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
- Lancaster website: https://www.cityoflancasterca.org/
- Lancaster laws: search for the Lancaster, California code of ordinances
- Los Angeles County website: https://lacounty.gov
- Los Angeles County laws: search for the Los Angeles County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 23 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 39 | 67% |
| Assembly District 34 | 33% |
ZIP codes
Percentages mark ZIPs only partly in Lancaster: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Lancaster's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:0640130")
Lancaster here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.