Shell Ridge, California
Shell Ridge is a Census-designated place (an unincorporated community) in Contra Costa County, California, with 1,014 residents in 2020. It is in California's 10th congressional district. Its state senate district is State Senate District 9; its state house district is Assembly District 16.
County
| County | Share of residents |
|---|---|
| Contra Costa County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| California's 10th congressional district (CA-10) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-10) | Mark DeSaulnier (D) | 202-225-2095 | 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 9) | Tim Grayson (Democratic) | 925-258-1176 | 100% |
| Assembly Member (Assembly District 16) | Rebecca Bauer-Kahan (Democratic) | 925-244-1600 | 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
- Shell Ridge laws: search for the Shell Ridge, 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 9 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 16 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Shell Ridge: the share of that ZIP's residents living in it.
- 94598 (3.8%)
Get this in your AI agent
Your agent can get Shell Ridge'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:0671362")
Shell Ridge here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.