Arlington is a city in Fayette County, Iowa, United States. The population was 419 in the 2020 census, a decline from the 490 population in th…Arlington is a city in Fayette County, Iowa, United States. The population was 419 in the 2020 census, a decline from the 490 population in the 2000 census. Arlington was originally called Brush Creek. The community was first settled in 1854.
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