Pioneer, California Zip Codes
📍 Pioneer is in Amador County, California with 1 zip code; the most populous is 95666.
Pioneer is a USPS city name in Amador County, California with a Census population of approximately 5,885 across its ZIP codes. Amador County as a whole has 13 ZIP codes in this directory. Below you'll find every zip code serving Pioneer with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Pioneer Zip Codes
Pioneer at a Glance
Pioneer has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 5,885 residents, the largest being 95666 with 5,885 people.
The median ZIP in Pioneer has a household income of $75,558 and a home value of $328,900, a price-to-income ratio of 4.4, below the 6.7 California ZIP median. Median rent across these ZIPs is $1,005 a month.
92% of households in the typical Pioneer ZIP own their home (statewide ZIP median 64%). 19% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 7.0%, below the 10.8% statewide ZIP median. Overall density is about 70 residents per square mile across 84 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Pioneer Zip Code Map
Interactive map of Pioneer, California zip codes. Click any marker for details.