The first postmaster of St. Marys was James Laird, appointed Feb. 5, 1825.

Succeeding postmasters and the dates of their appointments were listed as follows:

Robert Bickers, May 4, 1828
William R. Armstrong, Feb. 8, 1834
Samuel McKee, Oct. 2, 1837
David Bates, Dec. 5, 1839
Albert Halferstein, Nov. 4, 1840
George H. McLaughlin, March 5, 185l
Anthony Dieker, May 16, 1853
James Wilson, Nov. 9, 1857
George McLaughlin, Dec. 22, 1862
Charles Hipp, Jan. 30, 1866
Lewis C. Sawyer, Nov. 4, 1866
Charles Hipp, March 5, 1869
R. B. Gordon, Jr., Feb. 8, 1886
Charles Hipp, Nov. 12, 1889
David A. Clark, Oct. 28, 1893
John L. Sullivan, Feb. 16, 1898
John A. Anderson, March 8, 1904
William A. Moxley, Sept. 11, 1909
John A. Anderson, Aug. 11, 1911
Charles L. Hunter, March 10, 1914
Roy Heap, Jan. 5, 1923
August C. Schneider, Acting, Feb. 9, 1933
William H. Uetrecht, July 19, 1934
Joseph A. Simons, Acting, Aug. 1, 1947
Frank B. Shuffelton, Feb. 1,1948 until retirement May 22, 1970
H. Denzil Ice and Thomas Hevlin, officers in charge until May, 1971 when Denzil Ice was officially installed as Postmaster.

It is interesting to note that Major Charles Hipp in three appointments served a total of 21 years, seven months, 19 days. Frank B. Shuffelton exceeded his period of service by about nine months, serving a total of 22 years, four months, before his retirement.

For years the Post Office was located in the east room of the Koehl Building, now owned and occupied by The Leader Printing Company.

In 1925 it moved to the Community owned Post Office and continued there until 1967 when the present Post Office was erected in North Chestnut Street under a federal lease program.