Atherton, California
Atherton is a town in San Mateo County, California, with 7,188 residents in 2020. It spans 2 congressional districts: CA-16 (97%) and CA-15 (2.8%). It spans 2 state house districts. Its state senate district is State Senate District 13.
County
| County | Share of residents |
|---|---|
| San Mateo County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| California's 16th congressional district (CA-16) | 97% |
| California's 15th congressional district (CA-15) | 2.8% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-16) | Sam T. Liccardo (D) | 202-225-8104 | 97% |
| U.S. Representative (CA-15) | Kevin Mullin (D) | 202-225-3531 | 2.8% |
| 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 13) | Josh Becker (Democratic) | 650-233-2724 | 100% |
| Assembly Member (Assembly District 23) | Marc Berman (Democratic) | 650-324-0224 | 97% |
| Assembly Member (Assembly District 21) | Diane Papan (Democratic) | 650-349-2200 | 2.8% |
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
- Atherton website: http://www.ci.atherton.ca.us
- Atherton laws: search for the Atherton, California code of ordinances
- San Mateo County website: https://smcgov.org
- San Mateo County laws: search for the San Mateo County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 13 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 23 | 97% |
| Assembly District 21 | 2.8% |
ZIP codes
Percentages mark ZIPs only partly in Atherton: the share of that ZIP's residents living in it.
- 94027 (99%)
Get this in your AI agent
Your agent can get Atherton's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:0603092")
Atherton 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.