Years	Name	Municipality	Notes
63 years, 73 days	Hilmar Moore	Richmond, Texas	Served from September 22, 1949 to December 4, 2012.
61 years, 111 days	John H. Land	Apopka, Florida	Served from January 1, 1971 to April 22, 2014. Also served from January 1, 1950 to January 1, 1968.
58 years, 233 days	Robert Linn	Beaver, Pennsylvania	Served from January 2, 1946 to August 22, 2004.
59–60 years	Charles E. Long	Booneville, Kentucky	Entered office in 1959.
56 years	Paul Jurko	Yankee Lake, Ohio	Elected into office in November 1931 at the age of 21. Served until his death on March 1, 1988.
54 years	Robert L. Butler	Marion, Illinois	Entered office in May 1963. Served until his resignation on January 31, 2018.
52 years, 0 days	John M. Coyne	Brooklyn, Ohio	Served from 1948 until January 2000.
55 years, 92 days	Bruce Arnold	Valparaiso, Florida	Entered office on January 21, 1964, Died in office February 23, 2017.
51 years	Donald Stephens	Rosemont, Illinois	First Mayor of Rosemont. Served from village's incorporation in 1956 to 2007.
50 years	Leonard T. Connors	Surf City, New Jersey	Entered office in 1966, served until January 5, 2016.
48 years, 352 days	Frank E. Rodgers	Harrison, New Jersey	Served from September 4, 1946 to August 22, 1995.
47 years, 11 months	Frank Kelly	Collingdale, Pennsylvania	Served from 1970 to his death on November 22, 2018.
47 years, 115 days	Nicholas B. Blase	Niles, Illinois	Served from May 2, 1961 to his resignation on August 25, 2008.
49 years, 231 days	Leonard Scarcella	Stafford, Texas	Entered into office on September 4, 1969.
48 years, 112 days	H. Ford Gravitt	Cumming, Georgia	Entered office on January 1, 1971. Served four years on City Council (1967-1970)
48 years, 112 days	Robert Blais	Lake George, New York	Began current term on April 5, 1971.
43–44 years	Richard A. Mola	Elmwood Park, New Jersey	Entered office in 1972, served until his death in 2016.
43 years, 0 days	Paul W. Cassidy	Parma Heights, Ohio	Served in office between January 1958 through January 2001.
43–44 years	Margaret Doud	Mackinac Island, Michigan	Entered office in April 1975.
41 years, 146 days	Erastus Corning II	Albany, New York	Served from January 2, 1942 to May 28, 1983.
40 years, 27 days	Joseph P. Riley, Jr.	Charleston, South Carolina	Served from December 15, 1975 to January 11, 2016.
40 years	Louis Bay 2nd	Hawthorne, New Jersey	Entered into office in 1947, served until 1987.
42–43 years	Harold Rainwater	Wilmore, Kentucky	Entered into office in 1976.
41–42 years	Jim L. Sells	Rogersville, Tennessee	Entered office in 1977.
36-37 Years	Mary Hawkins Butler	Madison, Mississippi	Entered office in 1981.
37–38 years	Gary W. Starr	Middleburg Heights, Ohio	Entered office in 1981.
37 years, 357 days	Edward J. Zabrocki	Tinley Park, Illinois	Entered into office on May 1, 1981.
36 years	Orville L. Hubbard	Dearborn, Michigan	Entered office in 1942. Served until 1978.
35 years, 111 days	William W. Dickinson, Jr.	Wallingford, Connecticut	Entered office in 1984.
30 years, 33 days	Frank Hague	Jersey City, New Jersey	Entered office in 1917. Served until 1947.
29 years, 201 days	Dr. LeRoy G. Suire	Erath, Louisiana	Entered office in 1961. Served until 1990.
29 years, 39 days	Willie Oswalt	Lake City, Georgia	Entered office in 1989. Served until 2018.
27 years, 364 days	Stephen R. Reed	Harrisburg, Pennsylvania	Entered office in 1982. Served until 2010.