California's 31st congressional district

California's 31st congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Grace Napolitano D–Norwalk
Population (2023)	717,084
Median household income	$88,407[1]
Ethnicity	60.6% Hispanic 19.6% Asian 15.0% White 2.3% Black 1.8% Two or more races 0.7% other
Cook PVI	D+15[2]

California's 31st congressional district is a congressional district in Los Angeles County, in the U.S. state of California. The district is located in the San Gabriel Valley and contains most of the Hispanic-majority areas in that region.

From January 3, 2023, following the 2020 redistricting cycle, the district is currently represented by Democrat Grace Napolitano.