County seats are displayed in UPPER CASE. Note: Information about zip codes, territorials, markings, etc. have been moved to detail pages for places that have links.
Post Office County Dates of Service
Aaron
Bates
1895-1933
Abadyl
Christian
1895-1919
Abattis
Warren
1878-1904
Abbott
Greene
1878-1904
Abells
Ralls
1856-1858
Aberdeen
Pike
1871-1879, 1890-1907
Abernathy
Perry
1834-1836, 1866-1873
Abesville
Stone
1906-1914
Abo
Mc Donald
1882-1886
Abo
Laclede
1893-1940
Abraham
Greene
1857-1905
Acasto
Clark
1857-1905
Acme
Clay
1882-1900
Acorn
Ripley
1902-1937
Acorn Ridge
Stoddard
1860-1864, 1868, 1879-1909
Ada
Ray
1864-1873
Ada
Taney
1904-1907
Adair
Adair
1878-1900
Adam
Washington
1907-1913
Adams
Buchanan
1889-1900
Adamsburg
Gasconade
1848-1853
Adelaide
Miller
1880-1885
Adelaide
Wayne
1890
Adelbert
Washington
1922-1925
Adell
Mercer
1874-1904
Adelphos
Saline
1899
Aderton
Scott
1883-1884
Adkins
Nodaway
1899-1900
Adolph
Osage
1903-1904
Adonis
Polk
1895-1935
Adox
Mercer
1884-1886
Adrian
Bates
1880-Present
Advance
Stoddard
1882-Present
Affton
Saint Louis
1876-1902, 1906-1939
Agee
Andrew
1894-1897
Agency
Buchanan
1872-Present
Agnes
Laclede
1896-1933
Aholt
Chariton
1900-1940
Aid
Stoddard
1904-1949
Air
Lafayette
1852-UNK
Air
Johnson
UNK-1856
Aisle
Christian
1888-1900
Aix
Barry
1896-1900
Akard
Cedar
1890-1907
Akers
Shannon
1884-1965
Akinsville
Morgan
1880-1920
Akron
Harrison
1861-1908
Alamode
Reynolds
1846-1867, 1871-1909
Alanthus Grove
Gentry
1855-1906
Alba
Jasper
1860-1863, 1868-Present
ALBANY
Gentry
1857-Present
Alberta
Miller
1880-1883
Alberta
Henry
1884-1901
Albina
Howell
1872-1883
Alcora
Newton
1899-1901
Aldrich
Polk
1886-Present
Alecto
Atchison
1855-1857
Alexander’s Mills
Benton
1860-1862
Alexandria
Lincoln
1823-1829E
Alexandria
Clark
1841-Present
Algire
Washington
1904-1931
Alhambra
Stoddard
1902-1909
Alice
Cedar
1869-1874, 1879-1880
Alice
Texas
1886-1927
All
Webster
1899-1905
Allbright
Madison
1905-1941
Allen
Randolph
1857-1869
Allen’s Landing
Perry
1862-1869
Allena
Atchison
1858-1859
Allendale
Gentry
1856-1861
Allendale
Worth
1861-Present
Allenton
Saint Louis
1853-Present
Allenville
Cape Girardeau
1869-1874
Alley
Shannon
1884-1950
Alley Spring
Shannon
1950-1974
Alliance
Bollinger
1889-1953
Allison
Nodaway
1883-1901
Alma
Wright
1855-1863, 1876-1877
Alma
Webster
1872-1875
Alma
Lafayette
1879-Present
Alma Mine
Christian
1878-1882
Almartha
Ozark
1855-1856, 1860-1865, 1872-1969
Almeda
Newton
1858-1863, 1867-1872
Almon
Hickory
1883-1922
Alpha
Grundy
1856-1904
Alsup
Greene
1894-1906
Alta Vista
Daviess
1865-1866, 1869-1905
Altamont
Daviess
1890-Present
Altenburg
Perry
1854-Present
Altha
Stoddard
1868-1872
Althea
Ozark
1921-1926
Altheim
Saint Louis
1884-1886, 1889-1904
Althorpe
Linn
1887-1889
ALTON
Oregon
1860-Present
Altona
Bates
1868-1920
Alvarado
Mc Donald
1903-1904
Alvin
Morgan
1899-1901
Alvord
Mercer
1885-1888, 1890-1910
Amanda
Crawford
1857-1860
Amazonia
Andrew
1859-1865, 1867-Present
Ambrose
Ozark
1880-1895, 1898-1899
Ameera
Taney
1903-1906
Americus
Montgomery
1867-1959
Ameryville
Carroll
1879-1883
Amity
De Kalb
1872-Present
Amoret
Bates
1885-Present
Amos
Harrison
1873-1878
Amos
Vernon
1893-1931
Amsterdam
Bates
1892-Present
Amy
Howell
1891-1931
Anabel
Macon
1889-2006
Anaconda
Franklin
1892-1893
Ancell
Scott
1912-1960
Anderson
Buchanan
1861-1865
Anderson
Mc Donald
1886-Present
Anderson
Clinton
E1865-1877
Andoe
Stone
1918-1922
Andover
Harrison
1872-1943
Andrae
Jefferson
1889-1895
Andrew
Andrew
1864-1868
Angeline
Shannon
1909-1929
Anglum
Saint Louis
1894-1929
Ann
Douglas
1898-1915
Annada
Pike
1880-Present
Annapolis
Iron
1871-Present
Annie
Buchanan
1890-1897
Anniston
Mississippi
1894-Present
Anove
Gentry
1916-1925
Anson
Clark
1872-1904
Anthonies Mill
Crawford
1872-1901
Anthonies Mill
Washington
1901-1955
Antioch
Taney
1879
Antioch
Clark
1883-1907
Antler
Wright
1891-1907
Antonia
Jefferson
1874-1905
Antrim
Wright
1880-1907
Anutt
Dent
1890-1963
Apex
Lincoln
1880-1941
Apple Creek
Cape Girardeau
1818-1856
Apple Creek
Perry
1901-1909
Applegate
Webster
1891
Appleton
Cape Girardeau
1856-1917
Appleton City
Saint Clair
1871-Present
Aptus
Washington
1890-1915
Aquilla
Stoddard
1892-1908
Arab
Wayne
1905-1943
Arab
Bollinger
1943-Present
Aral
Webster
1893-1894
Arator
Pettis
1835-1862
Arbela
Scotland
1852-Present
Arbor
Cape Girardeau
1884-1928
Arbyrd
Dunklin
1911-Present
Arcadia
Madison
1841-1858
Arcadia
Iron
1871-Present
Archie
Cass
1880-Present
Arcola
Dade
1873-Present
Ardath
Barton
1913-1914
Arden
Douglas
1886-1924
Ardeola
Stoddard
1889-1908, 1910-1949
Arditta
Howell
1904-1934
Ardmore
Macon
1889-1929
Argentville
Lincoln
1879-1907
Argo
Franklin
1836-1849
Argo
Crawford
1849-1864, 1867-1882
Argola
Lewis
1879-1901
Argyle
Jefferson
1849-1858
Argyle
Osage
1904-Present
Arica
De Kalb
1869-1875
Ark
Dent
1901-1915
Arkoe
Nodaway
1877-1953
Arley
Clay
1893-1907
Arlington
Phelps
1868-1958
Arminda
Knox
1855-1856
Armstrong
Howard
1878-Present
Arnett
Mc Donald
1898-1916
Arnica
Cedar
1883-1907
Arno
Taney
1857-1863
Arno
Douglas
1867-1933
Arnold
Jefferson
1945-Present
Arnoldsville
Buchanan
1853-1856, 1863-1864, 1867-1888
Arnsberg
Cape Girardeau
1874-1917
Aroma
Newton
1910-1911
Arp
Ozark
1895-1896, 1906-1910
Arroll
Texas
1899-1957
Arrow Rock
Saline
1821-Present
Arroyo
Phelps
1904-1906
Art
Newton
1889-1901
Artesian
Platte
1895-1900
Artesian Springs
Platte
1891-1895
Arthur
Vernon
1881-1936
Asboth
Camden
1862-1864
Asbury
Jasper
1894-Present
Ascalon
Saint Louis
1896-1904
Ascot
Douglas
1891-1896, 1900-1901
Ash
Monroe
1884-1904
Ash Grove
Greene
1849-1864, 1866-Present
Ash Hill
Butler
1861, 1874-1894
Ashburn
Pike
1857-Present
Asherville
Stoddard
1872-1927
Ashland
Boone
1856-Present
Ashley
Pike
1835-1965
Ashley Creek
Texas
1936-1951
Ashton
Clark
1851-1954
Ashworth
Howell
1896-1897
Asper
Livingston
1869-1880
Asper
Carroll
1880-1903
Asperville
Daviess
1871-1873
Astoria
Wright
1844-1853, 1855-1863, 1867-1937
Astra
Jasper
1892-1894
Atchison Junction
Platte
1876-1899
Atchley
Laclede
1902-1905
Atfe
Holt
1867-1870
Atfek
Lafayette
1855-1963
Athelston
Worth
1887-1893
Athens
Clark
1841-1922
Atherton
Jackson
1888-1976
Athol
Bates
1899-1903
Athol
Jackson
1921-1928
Atlanta
Harrison
1858-1865
Atlanta
Macon
1868-Present
Atlas
Dent
1890-1891
Atoka
Laclede
1887-1912
Atteberry
Webster
1903-1906
Attie
Oregon
1886-1902
Atwell
Miller
1894-1910
Aubrey
Johnson
1877-1904
Auburn
Lincoln
1828-1905
Aud
Osage
1889-1954
Auglaize
Camden
1893-1895
Augusta
Saint Charles
1842-Present
Aullville
Lafayette
1871-1957
Ault
Carroll
1885-1892
Aurora
Clay
1838-1839
Aurora
Platte
1839
Aurora
Saint Clair
1860-1861
Aurora
Wright
1868-1871
Aurora
Lawrence
1871-Present
Aurora Springs
Miller
1882-1912
Austin
Atchison
1841-1851
Austin
Cass
1856-1863, 1866-1918
Austinville
Livingston
1841-1849, 1851-1860
Auxvasse
Callaway
1874-Present
AVA
Douglas
1872-Present
Avalon
Livingston
1872-1985
Avena
Jefferson
1833-1836
Avenue City
Andrew
1878-1913
Avert
Stoddard
1890-1918, 1922-1945
Avery
Crawford
1853-1865
Avery
Dent
1880-1886
Avery
Dent
1880-1886
Avery
Benton
1890-1897
Avery
Hickory
1890-1956
Avilla
Jasper
1860-1863, 1866-Present
Avoca
Saint Francois
1840-1842
Avoca
Jefferson
1842-1885
Avola
Vernon
1869-1885
Avon
Ste. Genevieve
1849-1928
Avondale
Clay
1915-Present
Axtell
Macon
1898-1931
Ayersville
Putnam
1854-1887
Ayo
Christian
1915-1921
Ayres
Saline
1892-1903
Azen
Scotland
1878-1907
263 Post Offices entered in the letter A
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Updated on 27 Nov 2009 23:28:47.
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Missouri Postal History Society, St. Louis, Missouri.