Gallatin County, is a county located in the northern part of the U.S. state of Kentucky. Its county seat is Warsaw. The county was founded in 1798 and named for Albert Gallatin, the Secretary of the Treasury under President Thomas Jefferson. Gallatin County is included in the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. It is located along the Ohio River across from Indiana.

Northern Kentucky is an urban area in the U.S. Commonwealth of Kentucky compromising the southern part of the Cincinnati metropolitan area. The three main counties of the area are Boone, Kenton, and Campbell, all along the Ohio River across from Cincinnati, Ohio. Other counties frequently included in Northern Kentucky include Bracken, Grant, Gallatin and Pendleton. Of Greater Cincinnati's over two million residents, over 450,000 of them live in Northern Kentucky as of 2020, primarily in the northernmost counties. The largest cities in the region are Covington, Florence, and Independence.