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
Yancey
Phelps
1861-1870
Yancey Mills
Phelps
1870-1954
Yankee Doodle
Howell
1873-1876
Yankee Ridge
Harrison
1872-1880
Yankeetown
Saint Francois
1827
Yarbor
Pulaski
1889-1895
Yarrow
Adair
1904-1919
Yates
Randolph
1882-1954
Yatesville
Randolph
1879-1882
Yeager
Benton
1895-1898
Yeagerville
Scotland
1878
Yeakley
Greene
1879-1903
Yellow Creek
Chariton
1838-1857
Yingst
Lawrence
1883-1895
Yolo
Gentry
1855-1868
Yolo
Henry
1900-1901
York
Atchison
1878-1901
Young Hickory
Polk
1853
Young’s Mills
Franklin
1858-1867
Youngers
Boone
1839-1856, 1862, 1872-1902
Youngers
Callaway
1902-1908
Youngs Creek
Audrain
1855-1905
Youngstown
Adair
1903-1942
Younts
Perry
1887-1954
Younts Store
Perry
1872-1887
Yucatan
Callaway
1892-1908
Yukon
Texas
1899-2003
Yuma
Putnam
1892-1903
28 Post Offices entered in the letter “Y”
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Updated on 27 Nov 2009 23:28:54.
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Missouri Postal History Society, St. Louis, Missouri.