California's 8th congressional district (CA-08)
California's 8th congressional district (CA-08) covers parts or all of Solano County, Contra Costa County, Yolo County, San Joaquin County and Sacramento County, and 44 ZIP codes (25 wholly inside it). Its 2020 population was 764,945. This is the map in force for the November 3, 2026 election.
Who represents CA-08
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (CA-08) | John Garamendi (D) | 202-225-1880 |
| U.S. Senator | Adam B. Schiff (D) | 202-224-3841 |
| U.S. Senator | Alex Padilla (D) | 202-224-3553 · contact form |
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: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in CA-08 |
|---|---|
| Solano County | 100% |
| Contra Costa County | 23% |
| Yolo County | 6.8% |
| San Joaquin County | 2.7% |
| Sacramento County | 0.2% |
ZIP codes
Percentages mark ZIPs only partly in CA-08: the share of that ZIP's residents inside it.
- 94503 (0.4%)
- 94510
- 94512
- 94525 (39%)
- 94530
- 94533
- 94534
- 94535
- 94547
- 94553 (<0.1%)
- 94563 (<0.1%)
- 94564
- 94571
- 94572
- 94585
- 94589
- 94590
- 94591
- 94592
- 94706 (0.1%)
- 94707 (25%)
- 94708 (20%)
- 94801
- 94803
- 94804
- 94805
- 94806
- 95209 (<0.1%)
- 95219 (0.5%)
- 95240 (7.0%)
- 95242 (63%)
- 95612
- 95615 (17%)
- 95616 (<0.1%)
- 95618 (49%)
- 95620
- 95625
- 95641 (96%)
- 95680 (36%)
- 95686 (30%)
- 95687
- 95688
- 95690 (41%)
- 95694 (12%)
Towns
Clarksburg CCD, Dixon CCD, Fairfield-Suisun City CCD, Rio Vista CCD, Vacaville CCD, Vallejo CCD, West Contra Costa CCD, Briones CCD, Isleton CCD, Lodi CCD, Davis CCD and Thornton CCD.
Get this in your AI agent
Your agent can draw every precinct in CA-08, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:0608", children_level="precinct", include_districts=True)