Susanville Flag

Susanville

County:
Lassen County
County Seat:
Yes
Area (mi²):
7.918
State:
California

Susanville is a city located in Lassen County, California. Susanville has a 2026 population of 12,359. It is also the county seat of Lassen County. Susanville is currently declining at a rate of -2.28% annually and its population has decreased by -24.62% since the most recent census, which recorded a population of 16,396 in 2020.

12.4K
Total Population
1,561
Density (mi²)
-288 -2.28%
Growth

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)