95666 is zip code located in Pioneer, California. The population is 5,504, making 95666 the largest zipcode in Pioneer and the 3rd largest in Amador County.
There are 1 public schools in 95666 with an average Homefacts rating of B-. , and there are 18 registered sex offenders residing in the zip code 95666. Unemployment in 95666 is moderate.
Zip codes within Pioneer include 95644.