Abarr, ColoradoAbarr is an unincorporated community in Yuma County, Colorado, United States.HistoryAbarr was originally called Brownsville, and under the latter name was platted in 1922. The present name "Abarr" was adopted in 1923. The Abarr post office operated from February 26, 1923, until November 30, 1947. Abarr was named after the maiden name of Ethel Hoffman, the wife of Silas Hoffman, a couple who owned a postal office there.GeographyAbarr is located in western Yuma County at coordinates.