Template:Wp-Sumner County, Tennessee

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Sumner County is a county located on the central northern border of the U.S. state of Tennessee, in what is called Middle Tennessee.

As of the 2020 census, the population was 196,281. Its county seat is Gallatin, and its largest city is Hendersonville. The county is named for American Revolutionary War hero General Jethro Sumner.

Sumner County is part of the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area. The county is made up of eight cities, including Gallatin, Goodlettsville, Hendersonville, Millersville, Mitchellville, Portland, Westmoreland, and White House. Sumner County is northeast of Nashville, Tennessee.