Boundary Atlas

California's 27th congressional district (CA-27)

California's 27th congressional district (CA-27) lies within Los Angeles County, and 29 ZIP codes (6 wholly inside it). Its 2020 population was 760,129. This is the map in force for the November 3, 2026 election.

760,129residents (2020 Census)
1counties
29ZIP codes
357voting precincts

Who represents CA-27

OfficeMemberContact
U.S. Representative (CA-27)George Whitesides (D)202-225-1956
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-27
Los Angeles County7.6%

ZIP codes

Percentages mark ZIPs only partly in CA-27: the share of that ZIP's residents inside it.

Towns

Newhall CCD, South Antelope Valley CCD, North Antelope Valley CCD and San Fernando Valley CCD.

Get this in your AI agent

Your agent can draw every precinct in CA-27, 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:0627", children_level="precinct", include_districts=True)