From the record
“Arlington is a census-designated place (CDP) in southeastern Carbon County, Wyoming, United States. The population was 25 at the 2010 census.”
Wikipedia article Arlington, Wyoming, CC BY-SA 4.0.
One of 43 National Register listings published here for Carbon County · listed in 1983 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article