21.7% of the households in Congressional District 5, CA reported speaking a non-English language at home as their primary shared language, which is lower than the national average of 22%. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.

In 2023, the most common non-English language spoken in households in Congressional District 5, CA was Spanish. 13.6% of the households in Congressional District 5, CA reported speaking Spanish at home as the primary shared language between all members living in the household.