Marion County, Arkansas

Marion County, Arkansas
From top: Bull Shoals Lake, Marion County Courthouse in Yellville, the Buffalo National River crossing through the Ozark Mountains in the Lower Buffalo Wilderness, fly fishing on the White River near the Cotter Bridge
Location within the U.S. state of Arkansas
Coordinates: 36°16′47″N 92°42′57″W / 36.279722222222°N 92.715833333333°W / 36.279722222222; -92.715833333333
Country United States
State Arkansas
FoundedSeptember 25, 1836
Named afterFrancis Marion
SeatYellville
Largest cityBull Shoals
Area
 • Total
640 sq mi (1,700 km2)
 • Land597 sq mi (1,550 km2)
 • Water43 sq mi (110 km2)  6.8%
Population
 (2020)
 • Total
16,826
 • Estimate 
(2024)
17,593
 • Density28.2/sq mi (10.9/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district1st
Websitemarioncounty.arkansas.gov

Marion County (and Township) is located in the Ozark Mountains in the U.S. state of Arkansas. The county is named for Francis Marion, the famous "Swamp Fox" of the Revolutionary War. Created as Arkansas's 35th county in 1836, Marion County is home to one incorporated town and four incorporated cities, including Yellville, the county seat. The county is also the site of numerous unincorporated communities and ghost towns. The county included part of what is now Searcy County, Arkansas, with many opposing to dividing them, which helped fuel the bloody Tutt-Everett War between 1844 and 1850.

Occupying 640 square miles (170,000 ha), the county's population was 16,826 as of the 2020 Census. Based on population, the county ranks 42nd of the 75 in Arkansas. In the Ozarks, the county is largely covered with rugged terrain and waterways, with the exception of King's Prairie in the southwestern portion. It is drained by the White River, Buffalo River, Crooked Creek, and the Little North Fork of White River. Protected areas of the county include Bull Shoals-White River State Park, Ozark National Forest, the Buffalo National River and four wildlife management areas (WMAs).

Although there are no Interstate highways in Marion County, two United States highways (U.S. Route 62 [US 62] and US 412) and eight Arkansas state highways run in the county.