| Year | Date | Location |
| 1963 | June 14-15 | Park Ridge, Ill. |
| 1964 | June 17-18 | University of Iowa |
| 1965 | April 16-17 | Nashville, Tenn. |
| 1966 | April 15-16 | Colorado Springs, Colo. |
| 1967 | April 13-15 | Tucson, Ariz. |
| April 28-29 | Iowa City, Iowa | |
| 1968 | April 24-25 | Memphis, Tenn. |
| 1969 | April 25-26 | Long Beach, Calif. |
| 1970 | April 23-25 | Las Vegas, Nev. |
| 1971 | Nov. 18-20 | University of Illinois, Champaign, Ill. |
| 1972 | • | Georgia Southern University, Ga. |
| 1973 | May 4-6 | (W) Seattle, Wash. |
| May 4-5 | (M) Penn State University, Pa. | |
| 1974 | May 30-June 1 | (W) Southern Illinois University, Carbondale, Ill. |
| May 10-11 | (M) Berkeley, Calif. | |
| 1975 | May 22-24 | (W) Eugene, Ore. |
| June 12-14 | (M) Southern Illinois University, Carbondale, Ill. | |
| 1976 | April. 8-10 | (W) Philadelphia, Pa. |
| May 21-22 | (M) Berkeley, Calif. | |
| 1977 | April 21-23 | (W) California State, Fullerton, Calif. |
| May 6-7 | (M) Baton Rouge, La. | |
| 1978 | May 4-6 | (W) Nassau Coliseum, Uniondale, N.Y. |
| June 1-3 | (M) UCLA, Los Angeles, Calif. | |
| 1979 | May 18 | Dayton, Ohio |
| 1980 | April 19 | (W) University of Utah, Utah |
| (M) Columbus, Ohio | ||
| 1981 | May 12-14 | (W) Lehigh University, Pa. |
| May 21-23 | (M) University of Nebraska, Lincoln, Neb. | |
| 1982 | May 27-29 | (W) University of Utah, Salt Lake City, Utah |
| June 3-5 | (M) Syracuse, N.Y. | |
| 1983 | June 3-5 | Chicago, Ill. |
| 1984 | May 11-13 | Evanston, Ill. |
| 1985 | June 6-9 | Jacksonville, Fla. |
| 1986 | June 19-22 | Indianapolis, Ind. |
| 1987 | June 18-21 | Kansas City, Mo. |
| 1988 | Jul. 7-10 | Houston, Texas |
| 1989 | Jul. 6-9 | Minneapolis, Minn. |
| 1990 | June 7-10 | Denver, Colo. |
| 1991 | June 6-9 | Cincinnati, Ohio |
| 1992 | May 14-17 | Columbus, Ohio |
| 1993 | Aug. 25-28 | Salt Lake City, Utah |
| 1994 | Aug. 24-27 | Nashville, Tenn. |
| 1995 | Aug. 16-19 | New Orleans, La. |
| 1996 | June 5-8 | Knoxville, Tenn. |
| 1997 | Aug. 13-16 | Denver, Colo. |
| 1998 | Aug. 19-22 | Indianapolis, Ind. |
| 1999 | Aug. 25-28 | Sacramento, Calif. |
| 2000 | June 26-29 | St. Louis, Mo. |
| 2001 | Aug. 8-11 | Philadelphia, Pa. |
| 2002 | Aug. 7-10 | Cleveland, Ohio |
| 2003 | June 19-22 | Milwaukee, Wis. |
| 2004 | June 2-5 | Nashville, Tenn. |
| 2005 | Aug. 10-13 | Indianapolis, Ind. |
| 2006 | Aug. 16-19 | Saint Paul, Minn. |
| 2007 | Aug. 15-18 | San Jose, Calif. |
| 2008 | May 22-24 June 5-7 |
(M) Houston, Texas (W) Boston, Mass. |
| 2009 | Aug. 12-15 | Dallas, Texas |
| 2010 | Aug. 11-14 | Hartford, Conn. |
| 2011 | Aug. 17-20 | Saint Paul, Minn. |
| 2012 | June 7-10 | St. Louis, Mo. |
| 2013 | Aug. 14-17 | Hartford, Conn. |
| 2014 | Aug. 21-24 | Pittsburgh, Pa. |
| 2015 | Aug. 13-16 | Indianapolis, Ind. |
| 2016 | June 3-5 June 23-26 |
(M) Hartford, Conn. (W) St. Louis, Mo. |
| 2017 | Aug. 17-20 | Anaheim, Calif. |
| 2018 | Aug. 16-19 | Boston, Mass. |
| 2019 | Aug. 8-11 | Kansas City, Mo. |
| 2020 | No competition due to the Coronavirus pandemic. | |
| 2021 | June 3-6 | Fort Worth, Texas |
| 2022 | Aug. 18-21 | Tampa, Fla. |
| 2023 | Aug. 24-27 | San Jose, Calif. |
