Arlington is a city in Brookings and Kingsbury counties in the State of South Dakota. The population was 915 at the 2020 census. The city …Arlington is a city in Brookings and Kingsbury counties in the State of South Dakota. The population was 915 at the 2020 census. The city was platted by the Western Town Lot Company in 1880, and originally named Nordland, with the platted streets given Norwegian names. The city was renamed a few years later, and in 1885 given the name of Arlington, after the colonial center in Virginia. The streets were not renamed until several decades passed, with Olaf Street eventually changed to Main Street, Kanut Street to Third Street, etc.