95503 is zip code located in Eureka, California. The population is 24,717, making 95503 the largest zipcode in Eureka and the largest in Humboldt County.
There are 13 public schools in 95503 with an average Homefacts rating of B. The total crime rate for Eureka is high , and there are 34 registered sex offenders residing in the zip code 95503. Unemployment in 95503 is moderate.