westwood ca what county
Homefacts City Report. Westwood is located in Lassen County, CA. The population is 1,445, making Westwood the 3rd largest city in Lassen County. There are 3 public schools in Westwood with an average Homefacts rating of C-. The total crime rate for Westwood is moderate, and there are 5 registered sex offenders residing in the city.