| 1 | Centennial Exposition | 1876 | Philadelphia |
| 2 | World Cotton Centennial | 1884 | Louisiana |
| 3 | World's Columbian Exposition | 1893 | Chicago |
| 4 | California Midwinter International Exposition of 1894 | 1894 | San Francisco |
| 5 | Pan-American Exposition | 1901 | Buffalo |
| 6 | Louisiana Purchase Exposition | 1904 | St. Louis |
| 7 | Alaska-Yukon-Pacific Exposition | 1909 | University of Washington |
| 8 | Panama–Pacific International Exposition | 1915 | San Francisco |
| 9 | Sesquicentennial Exposition | 1926 | Philadelphia |
| 10 | Century of Progress | 1933 | Chicago |
| 11 | 1939 New York World's Fair | 1939 | Flushing Meadows–Corona Park |
| 12 | Century 21 Exposition | 1962 | Seattle |
| 13 | 1964 New York World's Fair | 1964 | New York City |
| 14 | Hemisfair '68 | 1968 | Texas |
| 15 | Expo '74 | 1974 | Spokane |
| 16 | 1984 Louisiana World Exposition | 1984 | New Orleans |
| 17 | Chicago 1992 World's Fair | 1992 | Chicago |
| 18 | 1982 World's Fair | — | World's Fair Park |
| 19 | California Pacific International Exposition | — | San Diego |
| 20 | Exhibition of the Industry of All Nations | — | Bryant Park |
| 21 | Panama–California Exposition | — | Balboa Park |
| 22 | South Carolina Inter-State and West Indian Exposition | — | Charleston |
| 23 | Southern Exposition | — | — |
| 24 | Texas Centennial Exposition | — | Fair Park |
| 25 | Woman's World's Fair | — | Chicago |