ZIP code 93420: Arroyo Grande, CA
ZIP code 93420 is in Arroyo Grande (60% of residents), Callender (4.2%) and Los Berros (2.0%), in San Luis Obispo County, California. 33% of its residents live outside city limits. It is in California's 24th congressional district. Its state senate districts are State Senate District 17 (60%) and State Senate District 21 (40%); its state house districts are Assembly District 30 (80%) and Assembly District 37 (20%).
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Arroyo Grande | 60% |
| Callender | 4.2% |
| Los Berros | 2.0% |
| Oceano | 0.9% |
| Nipomo | 0.4% |
| Woodlands | <0.1% |
| County | Share of ZIP residents |
|---|---|
| San Luis Obispo County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Arroyo Grande CCD | 99% |
| San Luis Obispo CCD | 0.8% |
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 | 60% |
| State Senator (State Senate District 21) | Monique Limón (Democratic) | 805-988-1940 | 40% |
| Assembly Member (Assembly District 30) | Dawn Addis (Democratic) | 831-649-2832 | 80% |
| Assembly Member (Assembly District 37) | Gregg Hart (Democratic) | 805-346-1237 | 20% |
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
- Arroyo Grande website: http://www.arroyogrande.org
- Arroyo Grande laws: search for the Arroyo Grande, California code of ordinances
- Callender laws: search for the Callender, California code of ordinances
- Los Berros laws: search for the Los Berros, 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 | 60% |
| State Senate District 21 | 40% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 30 | 80% |
| Assembly District 37 | 20% |
Voting precincts
28 voting precincts overlap ZIP 93420. 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:93420")
ZIP 93420 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.