Post Offices in Washington County, MO
Washington County was established on Nov 1, 1813.
The County Seat is Potosi.
Washington was formed from territory taken from the following counties: Ste. Genevieve
The current population is 22,686 people and the area is 760 sq. mi.
The county seat is displayed in oblique & bold face.
Towns that have more than 4 opening/close dates or are current have links to complete information.
| Post Office | Service |
Adam |
1907-1913
|
Adelbert |
1922-1925
|
Algire |
1904-1931
|
Anthonies Mill |
1901-1955
|
Aptus |
1890-1915
|
Baryties |
1893-1931
|
Belgrade |
1867-Present
|
Birdie |
1894-1900
|
Black River Exchange |
1857
|
Bliss |
1899-1943
|
Blunt |
1903-1911
|
Bon Tear |
1868
|
Boyer |
1858-1862
|
Brazil |
1889-1955
|
Cadet |
1859-Present
|
Caledonia |
1819-Present
|
Cannon Mines |
1915-1940
|
Carlyon |
1898-1902
|
Cicero |
1903-1909, 1912-1913
|
Clear Creek |
1889-1895
|
Courtois |
1846-1848, 1885-1989
|
Cruise |
1882-1941
|
Delbridge |
1928-1934
|
Eye |
1906-1917
|
Fertile |
1884-1928
|
Floyd |
1893-1932
|
Fourche Airenault |
1831-1905
|
Harmony |
1827-1874
|
Hopewell |
1886-1978
|
Hopewell Furnace |
1855-1886
|
Hulsey |
1890-1916
|
Ida |
1914-1915
|
Irondale |
1859-Present
|
Ishmael |
1929-1953
|
Johnson’s |
1849-1852
|
Juddville |
1891-Present
|
Kingston Furnace |
1867-1882
|
Latty |
1894-1919
|
|
| Post Office | Service |
Lawson |
1868-1875
|
Levy |
1889-1908
|
Livermore |
1884-1887
|
Marsden |
1875-1876
|
Maryden |
1898-1903
|
Mine au Burton |
1811-1824
|
Mine Shibboleth |
1823-1832E
|
Miner’s |
1847-1850
|
Mineral Point |
1858-Present
|
New Bowling Green |
1822-1825
|
New Caledonia |
1825-1827
|
Northcutt |
1912-1941
|
Norwine |
1888-Present
|
Old Mills |
1867-1868
|
Old Mines |
1827-1861, 1863-1969
|
Onyx |
1892-1895
|
Palmer |
1874-1955
|
Pea Ridge |
1911-1932
|
Pearson’s Mills |
1884-1885
|
Peoria |
1908-1934
|
Potosi |
1824-Present
|
Quaker |
1894-1954
|
Racola |
1898-1930
|
Rich Woods |
1832-1841
|
Richwoods |
1844-Present
|
Rock Spring |
1856-1894
|
Rockspring |
1894-1917
|
Shirley |
1894-1955
|
Summit |
1886-1928
|
Summitville |
1882-1886
|
Sunlight |
1885-1927
|
Tiff |
1905-Present
|
Topozark |
1907-1920
|
Troutt |
1890-1919
|
Undine |
1891-1932
|
Undine |
1891-1932
|
Walton Mill |
1868-1883
|
White |
1902-1906
|
|
Navigation:
There are 76 post offices listed for Washington County.
Post office information from “Missouri Post Offices 1804-1981”
©1982 - Robert G. Schultz. Used with permission of author.
Additional info on zip codes, markings and distances come from various members of MOPOHISSOC.
All post offices for Washington County have been added to the database.
Note: Researchers only listed for towns that have specific researchers separate from the overall county.
Remember, this site is primarily concerned with POSTAL history and makes no claims regarding genealogical research.
List updated: 11 Feb 2012 15:09
Direct inquiries to
This page, and all contents are Copyright © MCMXCIX-MMXII by
Missouri Postal History Society, St. Louis, Missouri.