Crittenden County is a county in the U.S. state of Kentucky. At the 2020 census, the population was 8,990. Its county seat and only municipality is Marion. The county was formed in 1842 and named for John J. Crittenden, senator and future Governor of Kentucky.

Livingston County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 8,888. Its county seat is Smithland and its largest community is Ledbetter. The county was established in 1798 from land taken from Christian County and is named for Robert R. Livingston, a member of the Committee of Five that drafted the U.S. Declaration of Independence. The county was strongly pro-Confederate during the American Civil War and many men volunteered for the Confederate Army. Livingston County is part of the Paducah, KY-IL Metropolitan Statistical Area. It is a prohibition or dry county with the exception of Grand Rivers which voted to allow alcohol sales in 2016.