Williams, California
Williams is a city in Colusa County, California, with 5,538 residents in 2020. It is in California's 4th congressional district. Its state senate district is State Senate District 1; its state house district is Assembly District 4.
County
| County | Share of residents |
|---|---|
| Colusa County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| California's 4th congressional district (CA-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| 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 1) | Megan Dahle (R) | 530-879-7424 | 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
- Williams website: http://www.cityofwilliams.org
- Williams laws: search for the Williams, California code of ordinances
- Colusa County website: https://www.countyofcolusaca.gov/
- Colusa County laws: search for the Colusa County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 1 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 4 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Williams: the share of that ZIP's residents living in it.
- 95987 (88%)
Get this in your AI agent
Your agent can get Williams'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:
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Williams 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.