Originally named O'Bar, the Azle Post Office opened in 1881. Its name changed in 1883 for Dr. Azle Stewart, who gave land for the townsite. At first it was located in a store, then Postmaster Cora Lovell moved it to a frame building at 141 W. Main, where it remained from 1916 to 1953. It became a community gathering place, and during the 38-year term of Postmaster Elsie Gipson Parker it also housed a small public library. After Azle attained the rank of First Class Station, a larger postal facility was erected in 1970-71.