ZIP code 93401: San Luis Obispo, CA
ZIP code 93401 is in San Luis Obispo (89% of residents) and Los Ranchos (5.1%), in San Luis Obispo County, California. 6.2% of its residents live outside city limits. It is in California's 24th congressional district. Its state senate districts are State Senate District 17 (99%) and State Senate District 21 (1.3%); its state house district is Assembly District 30.
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| San Luis Obispo | 89% |
| Los Ranchos | 5.1% |
| Edna | 0.6% |
| County | Share of ZIP residents |
|---|---|
| San Luis Obispo County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| San Luis Obispo CCD | 99% |
| Arroyo Grande CCD | 1.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| California's 24th congressional district (CA-24) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-24) | Salud O. Carbajal (D) | 202-225-3601 | 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 17) | John Laird (Democratic) | 831-657-6315 | 99% |
| State Senator (State Senate District 21) | Monique Limón (Democratic) | 805-988-1940 | 1.3% |
| Assembly Member (Assembly District 30) | Dawn Addis (Democratic) | 831-649-2832 | 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
- San Luis Obispo laws: search for the San Luis Obispo, California code of ordinances
- Los Ranchos laws: search for the Los Ranchos, California code of ordinances
- San Luis Obispo County website: https://www.slocounty.ca.gov/
- San Luis Obispo County laws: search for the San Luis Obispo County, California code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 17 | 99% |
| State Senate District 21 | 1.3% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 30 | 100% |
Voting precincts
23 voting precincts overlap ZIP 93401. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:93401")
ZIP 93401 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.