None of the households in Humboldt Hill, CA reported speaking a non-English language at home as their primary shared language. 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.
89.7% of the residents in Humboldt Hill, CA are U.S. citizens.
The largest universities in Humboldt Hill, CA are College of the Redwoods (1,072 degrees awarded in 2024).