Antlers is a city in and the county seat of Pushmataha County, Oklahoma, United States. The population was 2,221 as of the 2020 United Stateā¦Antlers is a city in and the county seat of Pushmataha County, Oklahoma, United States. The population was 2,221 as of the 2020 United States census. The town was named for a kind of tree that becomes festooned with antlers shed by deer, and is taken as a sign of the location of a spring frequented by deer.