Boundary Atlas

Lake Mathews, California

Lake Mathews is a Census-designated place (an unincorporated community) in Riverside County, California, with 5,972 residents in 2020. It is in California's 40th congressional district. Its state senate district is State Senate District 32; its state house district is Assembly District 63.

5,972residents (2020 Census)
15.9 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Riverside County100%

Congressional district

Congressional districtShare of residents
California's 40th congressional district (CA-40)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CA-40)Young Kim (R)202-225-4111100%
U.S. SenatorAdam B. Schiff (D)202-224-3841statewide
U.S. SenatorAlex Padilla (D)202-224-3553 · contact formstatewide
State Senator (State Senate District 32)Kelly Seyarto (R)951-280-1260100%
Assembly Member (Assembly District 63)Natasha Johnson (R)951-277-3639100%

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

State legislative districts

State senate districtShare of residents
State Senate District 32100%

State house districtShare of residents
Assembly District 63100%

ZIP codes

Percentages mark ZIPs only partly in Lake Mathews: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Lake Mathews'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:0639645")

Lake Mathews here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.