Lathrop, California
Lathrop is a city in San Joaquin County, California, with 28,701 residents in 2020. It is in California's 13th congressional district. Its state senate district is State Senate District 5; its state house district is Assembly District 9.
County
| County | Share of residents |
|---|---|
| San Joaquin County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| California's 13th congressional district (CA-13) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-13) | Adam Gray (D) | 202-225-1947 | 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 5) | Jerry McNerney (Democratic) | 209-472-9535 | 100% |
| Assembly Member (Assembly District 9) | Heath Flora (R) | 209-599-2112 | 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
- Lathrop website: http://www.ci.lathrop.ca.us
- Lathrop laws: search for the Lathrop, California code of ordinances
- San Joaquin County website: https://sjgov.org
- San Joaquin County laws: search for the San Joaquin County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 5 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 9 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Lathrop: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Lathrop's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:0640704")
Lathrop here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.