Lassen County, California Zip Codes
📍 Lassen County has 17 zip codes with a population of 34,257.
Lassen County is located in California with a land area of 2,709 square miles. The county seat is Susanville. Below you'll find all 17 zip codes in Lassen County with population, income and home value, the county's affordability profile, and links to its 16 city pages.
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 Lassen County Zip Codes
| ZIP Code | City | Details |
|---|---|---|
| 96006 | Adin | View → |
| 96009 | Bieber | View → |
| 96056 | Mcarthur | View → |
| 96068 | Nubieber | View → |
| 96109 | Doyle | View → |
| 96113 | Herlong | View → |
| 96114 | Janesville | View → |
| 96117 | Litchfield | View → |
| 96119 | Madeline | View → |
| 96121 | Milford | View → |
| 96123 | Ravendale | View → |
| 96127 | Susanville | View → |
| 96128 | Standish | View → |
| 96130 | Susanville | View → |
| 96132 | Termo | View → |
| 96136 | Wendel | View → |
| 96137 | Westwood | View → |
Lassen County at a Glance
Lassen County has 17 ZIP codes in this directory: 16 standard delivery ZIPs and 1 PO Box or unique ZIP that carries no resident population in Census data. The 10 ZIPs with published Census housing data cover 34,257 residents, the largest being 96130 (Susanville) with 21,460 people.
The median ZIP in Lassen County has a household income of $61,632 and a home value of $239,850, a price-to-income ratio of 4.1, below the 6.7 California ZIP median. Affordability ranges from 96113 in Herlong at a ratio of 1.4 to 96056 in Mcarthur, where the median home is $374,200. The highest median income is in 96128 (Standish) at $86,771. Median rent across these ZIPs is $1,009 a month.
83% of households in the typical Lassen County ZIP own their home (statewide ZIP median 64%). 14% of adults hold a bachelor's degree, far below the 31% statewide median. The median poverty rate is 9.3%, below the 10.8% statewide ZIP median. Overall density is about 13 residents per square mile across 2,709 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.
Lassen County Zip Code Map
Interactive map of Lassen County, California zip codes.