what county is jeannette pa
Homefacts City Report. Jeannette is located in Westmoreland County, PA. The population is 9,672, making Jeannette the 5th largest city in Westmoreland County. There are 6 public schools in Jeannette with an average Homefacts rating of B. The total crime rate for Jeannette is moderate, and there are 36 registered sex offenders residing in the city.