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
Pacific
Franklin
1854-Present
Pack
Mc Donald
1904-1906
Packard
Hickory
1890-1892
Packwood
Daviess
1893-1894
Paddy
Ozark
1908-1928
Padgett
Chariton
1885-1893
Padrone
Crawford
1882-1883
Page
Adair
1862-1864
Page City
Lafayette
1872-1901
Paines Prairie
Polk
1872-1882
Painswick
Maries
1858-1865
Painton
Stoddard
1918-2004
Palace
Greene
1888-1905
Palace
Pulaski
1909, 1931-1957
Palestine
Cooper
1835-1836, 1838-1849
Palestine
Laclede
1888-1889
Palestine
Harrison
1892
Pallas
Greene
1856-1864, 1866-1871
Palmer
Washington
1874-1955
Palmetto
Greene
1890-1906, 1908-1914
Palmyra
Ralls
1820-1830
PALMYRA
Marion
1830-Present
Palo Pinto
Benton
1877-1904
Panacea
Barry
1880-1895
Panama
Pulaski
1861
Panama
Vernon
1893-1909
Pankas
Macon
1858-1860
Panserville
Bates
1868-1870
Pansy
Shelby
1882-1894
Pansy
Douglas
1898-1935
Panther
Oregon
1883-1884
Panther Valley
Webster
1856-1865, 1875-1888
Pape
Saint Clair
1891-1908
Papinsville
Bates
1848-1862, 1866-1906
Paradise
Clay
1858-1863, 1865-1907
Paragon
Dunklin
1900-1901
PARIS
Monroe
1841-Present
Paris Springs
Lawrence
1874-1920
Park
Newton
1891-1903
Park
Butler
1911-1915
Parker
Andrew
1872-1902
Parker’s
Bates
1848-1849
Parkers Station
Scott
1875-1883
Parkerton
Grundy
1897-1907
Parkhurst
Howard
1878
Parks Grove
Saint Clair
1868-1879
Parkville
Platte
1841-1962
Parma
New Madrid
1903-Present
Parnell
Nodaway
1887-Present
Parshley
Jasper
1890-1901
Parson
Sullivan
1881-1901
Partlow
Laclede
1886-1895
Pasco
Dallas
1850-1864
Pascola
Pemiscot
1895-1896, 1898-2002
Pashaw
Vernon
1888-1905
Passaic
Bates
1889-1983
Passo
Benton
1897-1908
Passover
Camden
1901-1931
Paton
Cape Girardeau
1846-1849
Patsy
Crawford
1894-1919, 1921-1927
Patten
Cape Girardeau
1837
Patterson
Ste. Genevieve
1840-1849
Patterson
Wayne
1851-1862, 1865-Present
Patton
Bollinger
1849-Present
Pattonsburg
Daviess
1844-Present
Pattonville
Saint Louis
1876-1958
Paulding
Dunklin
1900-1918
Pauline
Pettis
1886-1902
Paulville
Adair
1857-1873
Paw Paw
New Madrid
1885-1889
Pawnee
Harrison
1886-1908
Pawpaw
Sullivan
1899-1905
Pax
Lawrence
1895-1899
Paxton’s Store
Pike
1867, 1869-1871
Pay Down
Osage
1850, 1855-1856
Pay Down
Maries
1856-1862, 1866-1932
Payne
Oregon
1881-1882
Payne
Mississippi
1892-1895
Payne
Mc Donald
1900-1903
Paynesville
Pike
1833-Present
Pea Ridge
Washington
1911-1932
Pea Vine
Osage
1854-1857
Pea Vine
Lafayette
1863-1866
Peace Valley
Howell
1876-Present
Peach Orchard
Pemiscot
1936-1973E
Peachland
Osage
1870-1886
Peachtree
Jasper
1891-1892
Peakesville
Clark
1858-1905
Pearl
Greene
1886-1928
Pearson
Pettis
1880-1881
Pearson’s Mills
Washington
1884-1885
Pease
Laclede
1885-1921
Peculiar
Cass
1868-Present
Pedee
Schuyler
1854-1862
Pedro
Barton
1886-1900
Pedrow
Taney
1902-1913
Peel Tree
Pettis
1867
Peers
Warren
1893-1906, 1908-1973E
Peggy
Carter
1888-1907
Pekin
Scotland
1853-1855
Pemberton
Dade
1874-1880
Pembina
Christian
1884-1906
Pendleton
Montgomery
1823-1833
Pendleton
Warren
1833-1837, 1859-1951
Penneys
Randolph
1850-1859
Pennsboro
Dade
1895-1931
Pennville
Sullivan
1856-1909
Peoples
Cape Girardeau
1853-1868, 1875-1881
Peoria
Bates
1859-1863, 1867-1869
Peoria
Washington
1908-1934
Pepsin
Newton
1892-1903
Perche
Randolph
1877-1887
Perche
Boone
1888-1905
Perkins
Gasconade
1825-1830E
Perkins
Scott
1890-1894, 1901-Present
Perkins Mill
Greene
1846-1849
Perkins Creek
Bollinger
1851-1864
Perkins Grove
Grundy
1856-1860
Perrin
Clinton
1873-1953
Perry
Ralls
1866-Present
Perry & Tarpleys Mines
Saint Francois
1837-1840
PERRYVILLE
Perry
1823-Present
Perseverance
Newton
1848-1852
Pershing
Gasconade
1918-1959
Pertz
Shannon
1900-1906
Peru
Bates
1892-1901
Peruque
Saint Charles
1888-1979
Petersburg
Boone
1838-1949
Petersburgh
Henry
1881-1902
Petersville
Texas
1881-1894
Petit Saw Bluff
Lafayette
1828-1833
Petitsaw
Saline
1879-Present
Petra
Saline
1842-1878
Pettuce
Adair
1854-1857
Peveley
Jefferson
1858-Present
Peytonia
Montgomery
1871-1872, 1875-1881
Pharsalia
Sullivan
1845-1847
Phelps
Osage
1854-1855
Phelps
Lawrence
1857-1864
Phelps City
Atchison
1868-1954
Phenix
Greene
1886-1942
Philadelphia
Marion
1847-Present
Philander
Gentry
1858-1873
Phillipsburg
Laclede
1871-Present
Phlegton
Douglas
1887-1919
Pickerel
Greene
1869-1871
Pickerel Creek
Greene
1854-1855
Pickering
Nodaway
1871-Present
Pickle
Ste. Genevieve
1898-1905
Piedmont
Wayne
1872-Present
Pierce
Callaway
1854-1865, 1868-1873
Pierce City
Lawrence
1870-Present
Pierpont
Boone
1903-1907
Pigeon Creek
Ralls
1838-1868
Pike
Carter
1881-1891
Pike
Douglas
1903-1904
Pike Creek
Ripley
1850-1869
Pike Creek
Carter
1871-1872
Piketon
Stoddard
1852-1890
Piland’s Store
Ozark
1870-1878
Pilgrim
Dade
1886-1907
Pillman
Franklin
1903-1905
Pilot Grove
Cooper
1833-Present
Pilot Knob
Madison
1851, 1854-1858
Pilot Knob
Iron
1858-Present
Pin Oak
Warren
1854-1876
Pin Oak Grove
Gentry
1873-1879
Pinafore
Mercer
1881
Pinckney
Montgomery
1824-1833
Pinckney
Warren
1833-1893, 1895-1905
Pine
Ripley
1883-1971
Pine Bluff
Pulaski
1840-1853, 1860-1872, 1879-1880
Pine Creek
Laclede
1870-1894
Pine Grove
Iron
1858-1860
Pine Grove
Taney
1875-1877
Pine Hill
Shannon
1858-1867, 1870-1874
Pine Lawn
Saint Louis
1907-1916
Pine Ridge
Iron
1872-Present
Pine Valley
Reynolds
1878-1891
Pinecreek
Laclede
1894-1897
Pinedale
Reynolds
1906-1907
Pinegrove
Shannon
1905-1914
Pinetop
Taney
1902-1929
PINEVILLE
Mc Donald
1849-1864, 1866-Present
Piney Woods
Shannon
1875-1878
Pink Hill
Jackson
1854-1864, 1867-1902
Pinkley
Reynolds
1920-1926
Pinkleyville
Oregon
1869-1879
Pinkston
Texas
1905-1912
Pioneer
Barry
1883-1934
Piper
Henry
1895-1903
Pippin
Iron
1907-1914
Pisgah
Cole
1828-1848
Pisgah
Cooper
1848-1910
Pitcher
Callaway
1897-1904
Pitman
Saint Charles
1824-1827E
Pitmanville
Greene
1847-UNK
Pitts
Warren
1854-1900
Pittsburg
Hickory
1846-Present
Pittsville
Johnson
1860-1861, 1869-1954
Plad
Dallas
1891-1960
Plainfield
Bates
1851
Plainfield
Greene
1887-1897
Plainview
Clinton
1893-1901
Plank Road
Ste. Genevieve
1854-1860
Plano
Henry
1883-1884
Plano
Greene
1895-1903
Plato
Pulaski
1855
Plato
Texas
1858-1865, 1867-Present
Platte
Clay
1836-1840
PLATTE CITY
Platte
1839-Present
Platte River
Buchanan
1848-1861, 1863-1905
Plattin
Jefferson
1858-1862, 1871-1941
PLATTSBURG(H)
Clinton
1835-Present
Pleasant Dell
Howell
1878-Present
Pleasant Farm
Miller
1858-1909
Pleasant Gap
Bates
1840-1863, 1865-1918
Pleasant Green
Cooper
1842-1867, 1869-1871, 1873-1954
Pleasant Grove
Lafayette
1831-1840
Pleasant Grove
Ripley
1877-1906
Pleasant Hill
Randolph
1837
Pleasant Hill
Van Buren
1839-1849
Pleasant Hill
Cass
1849-Present
Pleasant Home
Putnam
1858-1885, 1887-1890
Pleasant Hope
Polk
1851-Present
Pleasant Mount
Miller
1847-1909
Pleasant Park
Carroll
1835-1882
Pleasant Plains
Scott
1834-1860
Pleasant Prairie
Greene
1839-1856
Pleasant Prairie
Polk
1871-1873
Pleasant Prairie
Lafayette
1873-1876
Pleasant Retreat
Scotland
1850-1901
Pleasant Ridge
Harrison
1854-1872, 1874-1876
Pleasant Ridge
Texas
1877-1894
Pleasant Run
Vernon
1867-1868
Pleasant Site
Saint Clair
1857-1863
Pleasant Valley
Shannon
1844-1845
Pleasant Valley
Wright
1850-1861, 1867-1878
Pleasant View
Ray
1860-1872
Pleasant View
Cedar
1876-1937
Pleasanton
Stone
1911-1912
Pleasantridge
Texas
1894-1909
Pleasantville
Sullivan
1861-1864
Plevna
Knox
1877-Present
Plew
Lawrence
1893-1904
Plint
Douglas
1885-1886
Plum Creek
Caldwell
1848-1849
Plum Creek
Clinton
1849-1861
Plum Grove
Saint Charles
1831
Plum Grove
Henry
1844-1847
Plum Grove
Cass
1853-1863
Plum Point
Randolph
1854-1856
Plum Valley
Texas
1858-1868, 1889-1910
Plunk
Wright
1901-1910
Plutarch
Livingston
1879-1881
Plymouth
Christian
1870-1871
Plymouth
Carroll
1877-1908
Pocahontas
Cape Girardeau
1856-Present
Point Labaddie
Franklin
1824-1838
Point Lookout
Taney
1931-Present
Point Pleasant
New Madrid
1820-1827, 1845-1979
Pointrest
Perry
1891-1940
Points
Boone
1886-1897
Polk
Taney
1840
Polk
Howell
1857-Present
Polk
Polk
1880-1973
Polk Spring
Iron
1857-1858
Polkville
Macon
1847-1850
Pollock
Sullivan
1879-Present
Polo
Caldwell
1868-Present
Pomeroy
Shannon
1887-1891
Pomme de Terre
Jasper
1840-1842
Pomo
Howell
1894-1895
Pomona
Saint Charles
1851-1854
Pomona
Howell
1895-Present
Pona
Cape Girardeau
1869-1874
Ponca
Ste. Genevieve
1910-1916
Ponce De Leon
Stone
1881-Present
Pond
Saint Louis
1866-1887, 1889-1904
Pond Creek
Greene
1848-1859
Pond Fort
Saint Charles
1821-1823, 1840-1841
Pond Place
Lincoln
1855
Ponder
Ripley
1888-1957
Pondfork
Ozark
1907-1918, 1920-1955
Pontiac
Ozark
1887-Present
Pope
Taney
1914
Poplar
Benton
1895-1909
Poplar Grove
Callaway
1844-1845
POPLAR BLUFF
Butler
1850-Present
Poplar Hill
Mc Donald
1869-1876
Poplin
Stoddard
1884-1886
Porasia Point
De Kalb
1853
Porche’s Prairie
Chariton
1868-1875
Port Hudson
Franklin
1859-1909
Port Perry
Perry
1851-1864
Port Royal
Jasper
1857-1864
Port Royal
Franklin
1889-1900
Port William
Franklin
1838-1859
Portage des Sioux
Saint Charles
1819-1827, 1833-1847, 1857-1867, 1871-Present
Portageville
New Madrid
1873-Present
Portia
Vernon
1894-1903
Portland
Callaway
1832-Present
Post Oak
Johnson
1846-1865, 1880-1954
Post Oak
Lincoln
1867-1872, 1874-1875
Postal
Pettis
1891-1904
POTOSI
Washington
1824-Present
Pottawatamie Creek
Indian
1844
Pottersville
Oregon
1853-1859
Pottersville
Howell
1860-1867, 1871-Present
Potts
Osage
1905-1920
Powe
Stoddard
1904-1929
Powell
Mc Donald
1871-Present
Powell Siding
Cass
1892-1900
Powellton
Atchison
1879-1886
Powers
Taney
1900-1901
Powersite
Taney
1913-Present
Powersville
Putnam
1887-Present
Poyner
Ripley
1891-Present
Pracy
Pemiscot
1894
Prairie
Lewis
1851-1855
Prairie
Clinton
1868-1874
Prairie Bird
Adair
1857-1888
Prairie City
Bates
1858-1863, 1866-1903
Prairie College
Cass
1853
Prairie Creek
Osage
1860-1865
Prairie Fork
Montgomery
1852-1861, 1875-1887, 1887-1888
Prairie Fork
Callaway
1887-1888
Prairie Hill
Chariton
1869-1966
Prairie Home
Johnson
1857-1862
Prairie Home
Moniteau
1866-1874
Prairie Home
Cooper
1874-Present
Prairie Lea
Benton
1858-1859
Prairie Lick
Cooper
1899-1906
Prairie Mound
Pike
1853-1859
Prairie Park
Nodaway
1862-1872
Prairie Valley
Osage
1860
Prairieview
Warren
1900-1903
Prairieville
Pike
1843-1861, 1865-1887
Prathersville
Clay
1876-1904
Pratt
Perry
1834-1836
Pratt
Wright
1881-1883
Pratt
Ripley
1894-1933
Precinct
Bollinger
1902-1904
Prentiss
Callaway
1902-1904
Prescott
Texas
1898-1953
Preston
Jasper
1860-1864, 1868-1880
Preston
Hickory
1881-Present
Prestonia
Ozark
1891-1913
Price
Putnam
1848-1849
Price
Saint Louis
1874-1902
Price’s Branch
Montgomery
1855-1908
Prices Landing
Scott
1859-1873
Priceville
Pettis
1858-1859
Priest
Johnson
1899-1902
Priest
Crawford
1910-1912
Primrose
Lewis
1858-1860, 1862-1872
PRINCETON
Mercer
1846-Present
Prior
Douglas
1894-1939
Prior Creek
Vernon
1870-1872
Prior’s Mill
Osage
1857-1861
Proctor
Morgan
1871-1872, 1878-1933
Proctorville
Caldwell
1868-1901
Progress
Audrain
1882-1890
Prohibition
Montgomery
1890-1914
Prohibition City
Worth
1877-1881
Pronax
Schuyler
1900-1904
Prospect
Clinton
1842-1847
Prospect Hill
Ray
1848-1864
Prospect Grove
Scotland
1850-1907
Prospect Hill
Clay
1864-1890
Prosperine
Laclede
1900-1952
Prosperity
Jasper
1891-1920
Protem
Taney
1875-Present
Providence
Boone
1844-1846, 1853-1854, 1857-1918
Pryor’s Store
Taney
1859-1867
Pryor’s Store
Douglas
1867-1882
Pulaski
Ripley
1912-1935
Puller
Christian
1894-1901
Pulltight
Shannon
1889-1907
Punjaub
Ste. Genevieve
1858-1877
Purcell
Mc Donald
1896-1897
Purcell
Jasper
1905-Present
Purdin
Linn
1877-Present
Purdy
Barry
1880-Present
Pure Air
Adair
1881-1905
Puritan
Howell
1910-1928
Purman
Ripley
1901-1913
Purvis
Camden
1888-1945
Putnamville
Putnam
1847-1851
Puxlco
Stoddard
1884-Present
Pyle
Stoddard
1895-1905
Pyramid
Ozark
1879-1881
Pyrmont
Morgan
1878-1911
393 Post Offices entered in the letter “P”
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Updated on 27 Nov 2009 23:28:52.
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Missouri Postal History Society, St. Louis, Missouri.