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