| operator | name | named after | heritage designation | image | date founded | Height (m) | city | administrative división | continent | Country | latitude (°) | longitude (°) | Website | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ashton Observatory |  | 1983 | 260 | Baxter, Iowa | Iowa | Americas | United States | 41.7999992371 | -93.2833328247 | Website | Map | |||
| Griffith Observatory | Griffith J. Griffith |  | 1935 | 346 | Los Angeles | California | Americas | United States | 34.1166648865 | -118.3000030518 | Website | Map | ||
| Hartung–Boothroyd Observatory |  | 1974 | 530 | Ithaca, New York | New York | Americas | United States | 42.4500007629 | -76.3833312988 | Website | Map | |||
| Highland Road Park Observatory | 1997 | 5 | Baton Rouge, Louisiana | Louisiana | Americas | United States | 30.3333339691 | -91.0666656494 | Website | Map | ||||
| Kirkwood Observatory |  | 1901 | 235 | Bloomington, Indiana | Indiana | Americas | United States | 39.1500015259 | -86.5166702271 | Website | Map |