Hennessey Real EstateHennessey is located in Oklahoma. Hennessey, Oklahoma has a population of 2,420. Hennessey is less family-centric than the surrounding county with 27.06% of the households containing married families with children. The county average for households married with children is 37.69%. The median household income in Hennessey, Oklahoma is $59,226. The median household income for the surrounding county is $62,829 compared to the national median of $57,652. The median age of people living in Hennessey is 38 years. Hennessey WeatherThe average high temperature in July is 94.2 degrees, with an average low temperature in January of 22.9 degrees. The average rainfall is approximately 34.1 inches per year, with 9.4 inches of snow per year. Hennessey MapReal estate near HennesseyNearby CitiesNearby Cities Homes for Sale |