| Region | Host Institution | Date | Representative(s) at Nationals |
| Carolinas | Clemson University | April 2-3, 2004 | Clemson University &
North Carolina State University |
| Deep South | University of Mississippi | March 25-27, 2004 | Louisiana State University |
| Great Lakes | Milwaukee School of Engineering | April 29-May 2, 2004 | University of Wisconsin - Madison & Milwaukee School of Engineering |
| Metropolitan | Rowan University | April 30-May 1, 2004 | Polytechnic University |
| Mid-Atlantic | Pennsylvania State University | April 23-24, 2004 | Villanova University |
| Mid-Continent | University of Nebraska - Lincoln | April 22-24, 2004 | University of Oklahoma & Oklahoma State University |
| Mid-Pacific | University of Nevada - Reno | April 23-25, 2004 | California State University Sacramento |
| Mid-West | Iowa State University | April 24, 2004 | University of Minnesota |
| New England | University of Hartford | April 24-25, 2004 | University of Massachusetts
Amherst |
| North Central | University of Akron | April 2-3, 2004 | Michigan Technological University |
| Ohio Valley | University of Pittsburgh | April 1-4, 2004 | Western Kentucky University |
| Pacific Northwest | Oregon Institute of Technology | April 1-3, 2004 | Montana State University |
| Pacific Southwest | California Polytechnic State University San Luis Obispo | April 1-3, 2004 | California State Polytechnic University Pomona |
| Rocky Mountain | Colorado State University | April 1-3, 2004 | New Mexico State University |
| Southeast | University of South Florida | March 18-20, 2004 | University of Alabama Huntsville |
| Texas-Mexico | Texas Section at South Padre Island | April 21-24, 2004 | Texas A&M University |
| Upstate New York | State University of New York - Buffalo | April 23-24, 2004 | Rochester Institute of Technology |
| Virginias | West Virginia University | April 1-3, 2004 | Fairmont State College |