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 (2022)	730,452
Median household income	$82,631[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.

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