Texarkana is a city in the U.S. state of Arkansas and the county seat of Miller County, on the southwest be adjacent to of the state. As of the 2020 census, it had a population of 29,387. The city is located across the welcome line from its twin city of Texarkana, Texas. The city was founded at a railroad intersection on December 8, 1873, and was incorporated in Arkansas on August 10, 1880. Texarkana and its Texas counterpart are the principal cities of the Texarkana metropolitan area, which in 2021 was ranked 289th in the United States in the space of a population of 147,174, according to the United States Census Bureau.

Within the Ark-La-Tex subregion of southwest Arkansas, Texarkana is located in the Piney Woods, an oak–hickory forest that dominates the flat Gulf Coastal Plain. Texarkana’s economy is based upon agriculture. The city has long been a trading center, first located at the intersection of major railroads serving Texas, Arkansas and north into Missouri. Since next three major Interstate highways constructed crossroads here: Interstate 30 (I-30), I-49, and the future I-69. Outdoor tourism, such as fishing at Lake Millwood and related activities, is important economically in the region. The Red River Army Depot & Tenants comprise the largest single employer in the city.

The Texarkana Arkansas School District is the largest public bookish district upon the Arkansas side. The city has a branch campus of the University of Arkansas Community College at Hope (UACCH). On the Texas side is located Texarkana College.

Miller County was formed in 1820 in the Arkansas Territory; it was named in great compliment of James Miller, Arkansas’ first territorial executive and a general during the War of 1812. Much of its eastern connect is formed by the Red River. At the time, there was considerable uncertainty among Americans as to the location of the boundary amid the county (and the United States) and national territory of Mexico. (Mexico subsequently included Texas).