Ada is located in Hardin County, OH. The population is 6,126, making Ada the 2nd largest city in Hardin County.
There are 2 public schools in Ada with an average Homefacts rating of A-. The total crime rate for Ada is low , and there are 12 registered sex offenders residing in the city. Unemployment in Ada is very high and the median home sales price is $0. Detailed and up-to-date Ada property reports are available for any property address.
Cities near Ada include Liberty Township, Alger and Marion Township.