There are 18 former lookout sites registered in Idaho. The most recently registered former lookout site is Horseshoe Lake Lookout SIte (US 1631, ID 18), added on November 27, 2016.
| Lookout Name | NHLR Registry Number | Available for Rental | Visit Reports |
| Antelope Mountain Lookout Site | US 628, ID 1 | ||
| Atlasta Lookout Site | US 1540, ID 13 | ||
| Bald Eagle Lookout Site | US 1541, ID 14 | ||
| Bear Creek Lookout Site | US 1542, ID 15 | ||
| Bernard Peak Lookout Site | US 1600, ID 16 | ||
| Birch Hill Lookout Site | US 822, ID 2 | ||
| Blacklead Lookout Site | US 828, ID 6 | ||
| Chateau Rock Lookout Site | US 1101, ID 10 | ||
| Feltham Creek Point Lookout Site | US 829, ID 7 | ||
| Fly Hill Lookout Site | US 823, ID 3 | ||
| Frisco Peak (Blacktail) Lookout Site | US 1172, ID 11 | ||
| Gorman Hill Lookout Site | US 824, ID 4 | ||
| Gospel Hill Lookout Site | US 825, ID 5 | ||
| Horse Heaven Lookout Site | US 1539, ID 12 | ||
| Horseshoe Lake Lookout SIte | US 1631, ID 18 | ||
| Red Rock Peak Lookout Site | US 830, ID 8 | ||
| Spades Mountain Lookout Site | US 1607, ID 17 | ||
| Swan Peak Lookout Site | US 831, ID 9 |