Wilton is a city in Little River County, Arkansas, United States. The population was 374 at the 2010 census, down from 439 at the 2000 c…Wilton is a city in Little River County, Arkansas, United States. The population was 374 at the 2010 census, down from 439 at the 2000 census. Wilton is located in northeastern Little River County. U.S. Routes 59 and 71 pass through the city as its Main Street. The highway leads south 5 miles to Ashdown, the county seat, and north 16 miles to Lockesburg.