California's 13th congressional district (CA-13)
California's 13th congressional district (CA-13) covers parts or all of Merced County, Stanislaus County, Madera County, San Joaquin County and Fresno County, and 54 ZIP codes (26 wholly inside it). Its 2020 population was 758,808. This is the map in force for the November 3, 2026 election.
Who represents CA-13
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (CA-13) | Adam Gray (D) | 202-225-1947 |
| 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-13 |
|---|---|
| Merced County | 100% |
| Stanislaus County | 47% |
| Madera County | 39% |
| San Joaquin County | 17% |
| Fresno County | 2.3% |
ZIP codes
Percentages mark ZIPs only partly in CA-13: the share of that ZIP's residents inside it.
- 93610 (12%)
- 93620
- 93622 (99%)
- 93635
- 93637 (57%)
- 93638 (67%)
- 93640 (98%)
- 93665
- 95202 (26%)
- 95203 (32%)
- 95205 (84%)
- 95206 (60%)
- 95215 (51%)
- 95231 (53%)
- 95301
- 95303
- 95304 (17%)
- 95307 (98%)
- 95312
- 95313
- 95315
- 95316 (1.1%)
- 95317
- 95319 (50%)
- 95322
- 95324
- 95326 (1.5%)
- 95328
- 95330 (100%)
- 95333
- 95334
- 95336 (0.5%)
- 95337 (6.4%)
- 95340
- 95341
- 95348
- 95350 (21%)
- 95351
- 95354 (92%)
- 95357 (0.8%)
- 95358
- 95360
- 95363
- 95365
- 95366 (<0.1%)
- 95368 (64%)
- 95369 (93%)
- 95374
- 95377 (0.7%)
- 95380 (85%)
- 95382 (5.0%)
- 95385
- 95387
- 95388
Towns
Atwater CCD, Dos Palos CCD, Gustine CCD, Hilmar-Irwin CCD, Livingston-Delhi CCD, Los Banos CCD, Merced CCD, Newman CCD, Patterson CCD, Planada-Le Grand CCD, Snelling CCD, Westport CCD, Firebaugh CCD, Madera West CCD, Mendota CCD, Salida CCD, Madera CCD, Modesto CCD, Turlock CCD, Stockton CCD, Madera Southeast CCD, Manteca CCD, Chowchilla CCD, Tracy CCD and Hughson CCD.
Get this in your AI agent
Your agent can draw every precinct in CA-13, 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:0613", children_level="precinct", include_districts=True)