Washington county is in the Outer Bluegrass region of Kentucky. The elevation in the county ranges from 475 to 1020 feet above sea level.
In 2010 the county population was 11,717 in a land area of 297.27 square miles, an average of 39.4 people per square mile.
The equine population was 1,900 in the 2012 Kentucky Equine Survey.
Washington county was named to honor George Washington, who was President of the United States when the county was formed.