source: postalhistory.com
| Post Office | Dates in operation |
|---|---|
| Bailey | 1887-1940 |
| Brownville | 1861-1914 |
| Cardiff | 1855-1904 |
| Carpenter | 1871-current |
| Cora | 1855-1856 |
| David | 1891-1933 |
| Dixie | 1894-1900 |
| Doran | 1857-1904 |
| Dramen | 1877-1880 |
| Durea | 1856-1858 |
| Fuller | 1892-1904 |
| Hustad | 1895-1911 |
| Leoti | 1858-1859 |
| Lincoln Centre | 1866-1867 |
| Little Cedar | 1870-1983 |
| Little Cedar Rur. Sta. | 1983-current |
| McIntire | 1891-current |
| Meroa | 1868-1903 |
| Meyer | 1897-1939 |
| Mitchell | 1855-1966 |
| Mitchell Rur. Sta. | 1966-1975 |
| Mona | 1862-1895 |
| Nelson | 1856-1868 |
| New Haven | 1878-1895 |
| New Haven Rur. Sta. | 1952-1981 |
| Newburgh | 1857-1872 |
| Newhaven | 1895-1906 |
| North Bend | 1857-1862 |
| Olin | 1868-1869 |
| Orchard | 1869-current |
| Orville | 1855-1857 |
| Osage | 1856-current |
| Otranto | 1857-1899 |
| Otranto | 1950-1953 |
| Otranto Rur. Sta. | 1953-1965 |
| Otranto Station | 1878-1950 |
| Riceville | 1861-current |
| Rock Creek | 1868-1895 |
| Rockcreek | 1896-1900 |
| Saint Ansgar | 1855-current |
| Springer | 1897-1899 |
| Staceyville | 1856-1883 |
| Stacyville | 1883-current |
| Stillwater | 1871-1899 |
| Toeterville | 1898-1985 |
| Toeterville Rur. Sta. | 1985-current |
| Wapsie | 1883-1887 |
| Wentworth | 1858-1893 |
| West Mitchell | 1861-1909 |
Transcribed and contributed by Conni McDaniel Hall, 20 Feb 2021.