Eureka, CA zip codes
Eureka, California has 3 zip codes (2 residential, 1 PO box or single-organization). Most of it is in Humboldt County. Together these zip codes are home to about 48K people.
Zip codes
3
Population
48K
All zips combined
Largest zip
95503
25,054 residents
Income range
$54K–$72K
Median by zip