Monrovia, California
Monrovia is a city in Los Angeles County, California, with 37,931 residents in 2020. It is in California's 31st congressional district. It spans 2 state house districts. Its state senate district is State Senate District 25.
County
| County | Share of residents |
|---|---|
| Los Angeles County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| California's 31st congressional district (CA-31) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-31) | Gilbert Ray Cisneros, Jr. (D) | 202-225-5256 | 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 25) | Sasha Pérez (Democratic) | 818-409-0402 | 100% |
| Assembly Member (Assembly District 41) | John Harabedian (Democratic) | 626-351-1917 | 99% |
| Assembly Member (Assembly District 48) | Blanca Rubio (Democratic) | 626-960-4457 | 0.7% |
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
- Monrovia laws: search for the Monrovia, California code of ordinances
- Los Angeles County website: https://lacounty.gov
- Los Angeles County laws: search for the Los Angeles County, California code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 25 | 100% |
| State house district | Share of residents |
|---|---|
| Assembly District 41 | 99% |
| Assembly District 48 | 0.7% |
ZIP codes
Percentages mark ZIPs only partly in Monrovia: the share of that ZIP's residents living in it.
- 91016 (91%)
Get this in your AI agent
Your agent can get Monrovia'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:0648648")
Monrovia 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.