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Jeffersonton, Virginia. Homefacts City Report. Jeffersonton is located in Culpeper County, VA. The population is NR. There are 0 public schools in Jeffersonton with an average Homefacts rating of NA. The total crime rate for Jeffersonton is very low, and there are 5 registered sex offenders residing in the city.
Jefferson County, Kentucky. Jefferson County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 741,096. It is the most populous county in Kentucky and is more than twice as large as the second most populous, Fayette. The county was formed in 1780 and named for future President Thomas Jefferson, who was Governor of Virginia at the time.