2012 | 11 | Puerto Rico | El Yunque National Forest |  | A Puerto Rican parrot and a coqui tree frog | January 23, 2012
(January 17, 1903) | 25,000,000 | 25,800,000 | — | 50,800,000 |
| 12 | New Mexico | Chaco Culture National Historical Park |  | Two elevated kivas that are part of the Chetro Ketl complex | April 2, 2012
(March 11, 1907) | 22,000,000 | 22,000,000 | — | 44,000,000 |
| 13 | Maine | Acadia National Park |  | The Bass Harbor Head Lighthouse. ---------------------- Acadia | June 11, 2012
(July 8, 1916) | 21,606,000 | 24,800,000 | — | 46,406,000 |
| 14 | Hawaii | Hawaii Volcanoes National Park |  | Kīlauea | August 27, 2012
(August 1, 1916) | 78,600,000 | 46,200,000 | — | 124,800,000 |
| 15 | Alaska | Denali National Park and Preserve |  | A Dall sheep with Denali in the background | November 5, 2012
(February 26, 1917) | 166,600,000 | 135,400,000 | — | 302,000,000 |