Boundary Atlas

California's 38th congressional district (CA-38)

California's 38th congressional district (CA-38) covers parts or all of Los Angeles County and Orange County, and 34 ZIP codes (10 wholly inside it). Its 2020 population was 757,523. This is the map in force for the November 3, 2026 election.

757,523residents (2020 Census)
2counties
34ZIP codes
409voting precincts

Who represents CA-38

OfficeMemberContact
U.S. Representative (CA-38)Linda T. Sánchez (D)202-225-6676
U.S. SenatorAdam B. Schiff (D)202-224-3841
U.S. SenatorAlex Padilla (D)202-224-3553 · contact form

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: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in CA-38
Los Angeles County6.3%
Orange County4.0%

ZIP codes

Percentages mark ZIPs only partly in CA-38: the share of that ZIP's residents inside it.

Towns

Upper San Gabriel Valley CCD, East San Gabriel Valley CCD, Whittier CCD, Southwest San Gabriel Valley CCD, South Gate-East Los Angeles CCD and Anaheim-Santa Ana-Garden Grove CCD.

Get this in your AI agent

Your agent can draw every precinct in CA-38, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

get_boundaries(id="us:congressional_district:0638", children_level="precinct", include_districts=True)