Oakley, California
Oakley is a city in Contra Costa County, California, with 43,357 residents in 2020. It spans 2 congressional districts: CA-10 (56%) and CA-09 (44%). Its state senate district is State Senate District 3; its state house district is Assembly District 11.
County
| County | Share of residents |
|---|---|
| Contra Costa County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| California's 10th congressional district (CA-10) | 56% |
| California's 9th congressional district (CA-09) | 44% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-10) | Mark DeSaulnier (D) | 202-225-2095 | 56% |
| U.S. Representative (CA-09) | Josh Harder (D) | 202-225-4540 | 44% |
| 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% |
| Assembly Member (Assembly District 11) | Lori Wilson (Democratic) | 707-438-7359 | 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
- Oakley website: https://www.ci.oakley.ca.us/
- Oakley laws: search for the Oakley, California code of ordinances
- Contra Costa County website: https://www.contracosta.ca.gov/
- Contra Costa County laws: search for the Contra Costa County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 3 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 11 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Oakley: the share of that ZIP's residents living in it.
- 94561 (97%)
Get this in your AI agent
Your agent can get Oakley'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:0653070")
Oakley 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.