Miller County, Arkansas

Miller County
Miller County Courthouse in Texarkana
Location within the U.S. state of Arkansas
Arkansas's location within the U.S.
Coordinates: 33°19′40″N 93°52′38″W / 33.327777777778°N 93.877222222222°W / 33.327777777778; -93.877222222222
Country United States
State Arkansas
FoundedApril 1, 1820;
recreated December 22, 1874,
following abolishment in 1838
Named afterJames Miller
SeatTexarkana
Largest cityTexarkana
Area
  Total
637.48 sq mi (1,651.1 km2)
  Land623.98 sq mi (1,616.1 km2)
  Water13.5 sq mi (35 km2)  2.1%
Population
 (2020)
  Total
42,600
  Estimate 
(2023)
42,415
  Density67/sq mi (26/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.millercountyar.com

Miller County is a county located in the southwestern corner of the U.S. state of Arkansas. As of the 2020 census, the population was 42,600. The county seat is Texarkana. Miller County is part of the Texarkana, TX-AR, Metropolitan Statistical Area.