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California's 31st district

U.S. House district profile: the sitting representative, 2024 Census demographics (119th-district boundaries), partisan lean, and 2026 race rating.

Representative

Official portrait of Gilbert Ray Cisneros, Jr.

Gilbert Ray Cisneros, Jr.

CA · District 31
DemocratRanking Member, Contracting and Infrastructure
Raised $705,263 · 18K followers (office + personal) · missed 0.6% of votes
7.7 years in Congress · Up for reelection: 2026
House Committee on Armed Services · House Committee on Small Business +4 more
View profile

Cook PVI: D+8

District demographics

MeasureValue
Population724,696
Median household income$90,291
Median age40.4
Bachelor's degree or higher26.3%
White alone13.5%
Black alone2.3%
Hispanic or Latino60.4%
Asian alone20.4%
Unemployment rate4.9%
Population density (per sq mi)3,489

Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates (tables B01003, B01002, B19013 and related), 119th Congress district boundaries, released September 2025; land area from the 2025 Gazetteer.