Alto is located in Marin County, CA. The population is 745.
There are 0 public schools in Alto with an average Homefacts rating of NA. The total crime rate for Alto is low , and there are 0 registered sex offenders residing in the city. Unemployment in Alto is low and the median home sales price is $0. Detailed and up-to-date Alto property reports are available for any property address.
Cities near Alto include Strawberry, Mill Valley and Corte Madera.