| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cabarton | city | Idaho | United States | 44.44 | -116.04 | 5029 | |
| Cabinet | city | Idaho | United States | 48.08 | -116.07 | 2509 | |
| Cable Car Crossing | city | Idaho | United States | 45.45 | -115.94 | 3349 | |
| Cache | city | Idaho | United States | 43.79 | -111.16 | 6092 | |
| Calder | city | Idaho | United States | 47.28 | -116.19 | 2509 | |
| Caldwell | city | Idaho | United States | 43.66 | -116.69 | 2509 | |
| Calendar | city | Idaho | United States | 45.62 | -115.67 | 7030 | |
| Camas | city | Idaho | United States | 44.01 | -112.22 | 5029 | |
| Cambridge | city | Idaho | United States | 44.57 | -116.68 | 2700 | |
| Cambridge | city | Idaho | United States | 42.45 | -112.12 | 5029 | |
| Cameron | city | Idaho | United States | 46.61 | -116.57 | 2559 | |
| Camp Creek Summer Home Area | city | Idaho | United States | 44.17 | -115.22 | 5295 | |
| Canfield | city | Idaho | United States | 45.84 | -116.37 | 4199 | |
| Canyon | city | Idaho | United States | 47.58 | -116.41 | 2509 | |
| Cape Horn (historical) | city | Idaho | United States | 44.40 | -115.17 | 6709 | |
| Carbon Center | city | Idaho | United States | 47.56 | -115.90 | 3349 | |
| Carbonate (historical) | city | Idaho | United States | 47.46 | -115.76 | 4189 | |
| Cardiff | city | Idaho | United States | 46.57 | -115.81 | 3602 | |
| Cardiff Mill | city | Idaho | United States | 46.47 | -115.79 | 3349 | |
| Cardwell | city | Idaho | United States | 47.21 | -116.56 | 2772 | |
| Carey | city | Idaho | United States | 43.31 | -113.94 | 5029 | |
| Careywood | city | Idaho | United States | 48.03 | -116.64 | 2509 | |
| Caribel | city | Idaho | United States | 46.26 | -115.94 | 3349 | |
| Caribou City (historical) | city | Idaho | United States | 43.10 | -111.26 | 7001 | |
| Carmen | city | Idaho | United States | 45.24 | -113.89 | 4189 | |
| Carothers Place (historical) | city | Idaho | United States | 42.88 | -116.43 | 3599 | |
| Carrietown | city | Idaho | United States | 43.60 | -114.70 | 7631 | |
| Cascade | city | Idaho | United States | 44.52 | -116.04 | 5029 | |
| Castle Rocks | city | Idaho | United States | 43.33 | -115.31 | 5278 | |
| Castleford | city | Idaho | United States | 42.52 | -114.87 | 4189 | |
| Casto | city | Idaho | United States | 44.57 | -114.85 | 5869 | |
| Cataldo | city | Idaho | United States | 47.55 | -116.33 | 2509 | |
| Cathedral Pines | city | Idaho | United States | 43.78 | -114.53 | 7135 | |
| Cavendish | city | Idaho | United States | 46.56 | -116.43 | 3349 | |
| Cayuse Junction | city | Idaho | United States | 46.60 | -114.85 | 5869 | |
| Cedar | city | Idaho | United States | 42.59 | -114.71 | 4189 | |
| Cedar Creek | city | Idaho | United States | 48.02 | -116.45 | 2509 | |
| Cedarhill | city | Idaho | United States | 42.27 | -112.73 | 5396 | |
| Cedron | city | Idaho | United States | 43.62 | -111.19 | 6125 | |
| Centerville | city | Idaho | United States | 43.91 | -115.89 | 4199 | |
| Central | city | Idaho | United States | 42.63 | -111.81 | 5869 | |
| Central Cove | city | Idaho | United States | 43.61 | -116.86 | 2509 | |
| Cerro Grande | city | Idaho | United States | 43.44 | -112.93 | 5029 | |
| Chalk Cut | city | Idaho | United States | 42.98 | -115.53 | 2824 | |
| Challis | city | Idaho | United States | 44.50 | -114.23 | 5180 | |
| Chambers (historical) | city | Idaho | United States | 46.92 | -116.78 | 2598 | |
| Chapin | city | Idaho | United States | 43.64 | -111.11 | 6197 | |
| Chat'u'washa'lqs Bluff | city | Idaho | United States | 47.33 | -116.60 | 2509 | |
| Chatcolet | city | Idaho | United States | 47.37 | -116.76 | 2509 | |
| Chausse | city | Idaho | United States | 42.18 | -111.08 | 6197 | |
| Cherry Creek | city | Idaho | United States | 42.10 | -112.23 | 4573 | |
| Cherrylane | city | Idaho | United States | 46.52 | -116.68 | 997 | |
| Cherryville | city | Idaho | United States | 42.04 | -111.75 | 5065 | |
| Chesley | city | Idaho | United States | 46.35 | -116.55 | 3451 | |
| Chester | city | Idaho | United States | 44.00 | -111.57 | 5127 | |
| Chesterfield | city | Idaho | United States | 42.87 | -111.90 | 5396 | |
| Chilco | city | Idaho | United States | 47.86 | -116.75 | 2509 | |
| Chilly | city | Idaho | United States | 44.08 | -113.88 | 6249 | |
| China Hat | city | Idaho | United States | 42.10 | -115.94 | 6000 | |
| China Hill | city | Idaho | United States | 42.55 | -111.83 | 5347 | |
| Chl'ach'alqw Landing | city | Idaho | United States | 47.46 | -116.82 | 2509 | |
| Chubbuck | city | Idaho | United States | 42.92 | -112.47 | 4547 | |
| Chł'ach'alqw Landing | city | Idaho | United States | 47.46 | -116.82 | 2509 | |
| Clagstone | city | Idaho | United States | 48.02 | -116.81 | 2509 | |
| Clarendon Hot Springs | city | Idaho | United States | 43.56 | -114.42 | 5869 | |
| Clark Fork | city | Idaho | United States | 48.15 | -116.18 | 2509 | |
| Clark Tree | city | Idaho | United States | 46.30 | -115.71 | 3605 | |
| Clarkia | city | Idaho | United States | 47.01 | -116.25 | 3349 | |
| Clarkson | city | Idaho | United States | 43.21 | -112.42 | 4478 | |
| Clarksville | city | Idaho | United States | 47.75 | -116.73 | 2627 | |
| Clawson | city | Idaho | United States | 43.80 | -111.11 | 6197 | |
| Clayton | city | Idaho | United States | 44.26 | -114.40 | 6190 | |
| Claytonia | city | Idaho | United States | 43.57 | -116.83 | 2509 | |
| Clearwater | city | Idaho | United States | 46.02 | -115.89 | 2509 | |
| Cleft | city | Idaho | United States | 43.24 | -115.85 | 3349 | |
| Clementsville | city | Idaho | United States | 43.88 | -111.37 | 6099 | |
| Cleveland | city | Idaho | United States | 42.34 | -111.71 | 5029 | |
| Clicks | city | Idaho | United States | 46.28 | -116.53 | 3530 | |
| Cliff (historical) | city | Idaho | United States | 43.88 | -113.68 | 7834 | |
| Cliffs | city | Idaho | United States | 42.64 | -116.98 | 5095 | |
| Clifton | city | Idaho | United States | 42.19 | -112.01 | 5029 | |
| Clover | city | Idaho | United States | 42.51 | -114.69 | 4189 | |
| Clover (historical) | city | Idaho | United States | 45.13 | -115.00 | 4491 | |
| Cloverdale | city | Idaho | United States | 43.62 | -116.33 | 2664 | |
| Clyde | city | Idaho | United States | 44.14 | -113.25 | 5869 | |
| Cobalt | city | Idaho | United States | 45.09 | -114.23 | 5869 | |
| Cocolalla | city | Idaho | United States | 48.11 | -116.62 | 2509 | |
| Coeur d'Alene | city | Idaho | United States | 47.68 | -116.78 | 2509 | |
| Coeur d'Alene Junction | city | Idaho | United States | 47.76 | -116.91 | 2509 | |
| Coeur d’Alene | city | Idaho | United States | 47.68 | -116.78 | 2509 | |
| Coffee Point | city | Idaho | United States | 43.16 | -112.97 | 5029 | |
| Colburn | city | Idaho | United States | 48.40 | -116.54 | 2509 | |
| Coleman | city | Idaho | United States | 48.00 | -116.91 | 2808 | |
| Collier Place | city | Idaho | United States | 42.58 | -116.24 | 5869 | |
| Collins | city | Idaho | United States | 43.20 | -112.38 | 4468 | |
| Collister | city | Idaho | United States | 43.66 | -116.25 | 2670 | |
| Coltman | city | Idaho | United States | 43.62 | -112.01 | 5029 | |
| Comical Turn | city | Idaho | United States | 42.56 | -116.14 | 5416 | |
| Conant | city | Idaho | United States | 42.28 | -113.45 | 5029 | |
| Concord | city | Idaho | United States | 45.58 | -115.68 | 7808 | |
| Concrete | city | Idaho | United States | 44.36 | -116.80 | 2801 | |
| Conda | city | Idaho | United States | 42.73 | -111.53 | 6709 | |
| Conkling Park | city | Idaho | United States | 47.40 | -116.76 | 2509 | |
| Connor | city | Idaho | United States | 42.28 | -113.50 | 5029 | |
| Coolin | city | Idaho | United States | 48.48 | -116.85 | 2509 | |
| Cooper | city | Idaho | United States | 46.45 | -116.05 | 3349 | |
| Copeland | city | Idaho | United States | 48.90 | -116.39 | 1794 | |
| Copperville | city | Idaho | United States | 45.75 | -116.32 | 2027 | |
| Cora | city | Idaho | United States | 47.00 | -116.96 | 2746 | |
| Corbin Junction | city | Idaho | United States | 47.89 | -116.72 | 2509 | |
| Cornwall | city | Idaho | United States | 47.52 | -115.84 | 4422 | |
| Cornwall | city | Idaho | United States | 46.71 | -116.87 | 2598 | |
| Cotterel | city | Idaho | United States | 42.52 | -113.46 | 4570 | |
| Cotton | city | Idaho | United States | 43.43 | -112.09 | 5029 | |
| Cottonwood | city | Idaho | United States | 46.05 | -116.35 | 3599 | |
| Cottonwood (historical) | city | Idaho | United States | 42.49 | -116.01 | 5406 | |
| Coulam | city | Idaho | United States | 42.23 | -111.98 | 5029 | |
| Council | city | Idaho | United States | 44.73 | -116.44 | 3349 | |
| Cow Creek | city | Idaho | United States | 46.50 | -115.93 | 2913 | |
| Cox | city | Idaho | United States | 43.37 | -112.05 | 5029 | |
| Craig Junction | city | Idaho | United States | 46.28 | -116.53 | 3697 | |
| Craigmont | city | Idaho | United States | 46.24 | -116.47 | 4189 | |
| Crane (historical) | city | Idaho | United States | 44.39 | -116.44 | 3398 | |
| Cream Can Junction | city | Idaho | United States | 42.94 | -113.39 | 5029 | |
| Crescent | city | Idaho | United States | 46.64 | -116.43 | 2798 | |
| Crill Place | city | Idaho | United States | 42.83 | -116.45 | 4399 | |
| Cross Trails | city | Idaho | United States | 45.48 | -115.69 | 5052 | |
| Crossport | city | Idaho | United States | 48.70 | -116.22 | 1814 | |
| Crouch | city | Idaho | United States | 44.12 | -115.97 | 3349 | |
| Crystal | city | Idaho | United States | 44.17 | -116.89 | 2509 | |
| Crystal | city | Idaho | United States | 42.65 | -112.50 | 5196 | |
| Crystal (historical) | city | Idaho | United States | 44.27 | -114.33 | 5429 | |
| Culdesac | city | Idaho | United States | 46.37 | -116.67 | 1889 | |
| Cully Moores | city | Idaho | United States | 46.53 | -115.99 | 3359 | |
| Culver | city | Idaho | United States | 48.32 | -116.46 | 2060 | |
| Cuprum | city | Idaho | United States | 45.09 | -116.69 | 5170 | |
| Curry | city | Idaho | United States | 42.56 | -114.56 | 3740 | |
| Custer | city | Idaho | United States | 44.39 | -114.70 | 7549 |