Mad River, California Zip Codes
📍 Mad River is in Trinity County, California with 1 zip code; the most populous is 95552.
Mad River is a USPS city name in Trinity County, California with a Census population of approximately 423 across its ZIP codes. Trinity County as a whole has 13 ZIP codes in this directory. Below you'll find every zip code serving Mad River 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 Mad River Zip Codes
Mad River at a Glance
Mad River has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 423 residents, the largest being 95552 with 423 people.
The median ZIP in Mad River has a household income of $21,550 and a home value of $240,300, a price-to-income ratio of 11.2, far above the 6.7 California ZIP median. Median rent across these ZIPs is $416 a month.
69% of households in the typical Mad River ZIP own their home (statewide ZIP median 64%). 17% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 41.6%, far above the 10.8% statewide ZIP median. Overall density is about 3 residents per square mile across 137 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.
Mad River Zip Code Map
Interactive map of Mad River, California zip codes. Click any marker for details.