CountyC2000 area (km? ) Capital Cc2000ac2000ac2000ada Ada 300, 9042, 733 Boyce 185, 787464, 840 Adams 3, 4763, 535 Cowen Hill Parliament Bannock 75, 5652, 883 Pocatellauder Catelot 5 1 46683. 103 Bel Lake 6,4112,516 Paris Benewa Benewa 9,1712,010 St. Maris Bingham 4/kloc-0. 426 Blackfoot Brian Brian18,9916,850 Haley Boyce 6,6704,928 Bonner, Idaho 36,8354,500 Sandport, Sandport, Bonner 82,5224,840 Idaho Falls 50,730/kl. 286 Moscow Lemhi7 7,80611,822 Salmon Lewis3 3,7471,241Nez Pailes Nez PerceLincoln 4,0443, 123 Xiao Songni Shoshone Madison27. 467 1, 22 1 Rexburg Minidoka 20, 173578 1, 056 payette Power in payette 7,5383,641American Waterfall Shoshone13,756. 99 1, 167 Twin Waterfalls 64,2844,986 Twin Waterfalls 34,469 Valley 7,6519,527