About Gallatin, TNGallatin is located in Tennessee. Gallatin, Tennessee has a population of 42,905. Gallatin is less family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 31%. The median household income in Gallatin, Tennessee is $56,516. The median household income for the surrounding county is $64,843 compared to the national median of $61,963. The median age of people living in Gallatin is 39.7 years. Gallatin WeatherThe average high temperature in July is 90.2 degrees, with an average low temperature in January of 24.2 degrees. The annual precipitation is 54.44. Gallatin MapGallatin real estate officesReal estate near GallatinNearby CitiesNearby Cities Homes for Sale |