Hennessey is located in Kingfisher County, OK. The population is 2,712, making Hennessey the 2nd largest city in Kingfisher County.
There are 3 public schools in Hennessey with an average Homefacts rating of B-. The total crime rate for Hennessey is moderate , and there are 5 registered sex offenders residing in the city. Unemployment in Hennessey is low and the median home sales price is $0. Detailed and up-to-date Hennessey property reports are available for any property address.