
Arnold
- County:
- Calaveras County
- County Seat:
- No
- Area (mi²):
- 8.678
- State:
- California
Arnold is a CDP located in Calaveras County, California. Arnold has a 2025 population of 1,372. Arnold is currently declining at a rate of -10.68% annually and its population has decreased by -34.64% since the most recent census, which recorded a population of 2,099 in 2020.
The average household income in Arnold is $129,802 with a poverty rate of 4.94%. The median age in Arnold is 60.1 years: 61.9 years for males, and 55.6 years for females.