Gallatin county is in the Outer Bluegrass region of Kentucky. The elevation in the county ranges from 420 to 920 feet above sea level.
In 2010 the county population was 8,589 in a land area of 101.23 square miles, an average of 84.8 people per square mile.
The equine population was 400 in the 2012 Kentucky Equine Survey.
Gallatin county was named for Albert Gallatin, who served in the United States Congress and later as Secretary of the Treasury under presidents Thomas Jefferson and James Madison.