what county is sylmar ca in
Homefacts City Report. Sylmar is located in Los Angeles County, CA. The population is NR. There are 13 public schools in Sylmar with an average Homefacts rating of C+. The total crime rate for Sylmar is low, and there are 103 registered sex offenders residing in the city. Unemployment in Sylmar is moderate and the median home sales price is $440,000.