Denison is located in Grayson County, TX. The population is 22,662, making Denison the 2nd largest city in Grayson County.
There are 12 public schools in Denison with an average Homefacts rating of C+. The total crime rate for Denison is high, and there are 104 registered sex offenders residing in the city. Unemployment in Denison is moderate and the median home sales price is $0.