UpAlphabetical listing of Places in Ontario
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Cainsville | city | Ontario | Canada | 43.15 | -80.20 | 830 | 38221 |
| Caintown | city | Ontario | Canada | 44.53 | -75.88 | 400 | 1635 |
| Caistorville | city | Ontario | Canada | 43.05 | -79.71 | 830 | 320 |
| Calabogie | city | Ontario | Canada | 45.30 | -76.72 | 830 | 298 |
| Caledon | city | Ontario | Canada | 43.86 | -79.99 | 1669 | 161 |
| Caledon East | city | Ontario | Canada | 43.87 | -79.87 | 990 | 8233 |
| Caledon Village | city | Ontario | Canada | 43.86 | -79.99 | 1669 | 161 |
| Caledonia | city | Ontario | Canada | 43.08 | -79.95 | 830 | 14344 |
| Caledonia Springs | city | Ontario | Canada | 45.55 | -74.80 | 160 | 602 |
| Callander | city | Ontario | Canada | 46.22 | -79.37 | 830 | 6702 |
| Cambridge | city | Ontario | Canada | 43.38 | -80.32 | 958 | 71184 |
| Camden East | city | Ontario | Canada | 44.33 | -76.83 | 830 | 2091 |
| Cameron Falls | city | Ontario | Canada | 49.13 | -88.33 | 853 | 0 |
| Camlachie | city | Ontario | Canada | 43.04 | -82.16 | 830 | 912 |
| Camp Borden | city | Ontario | Canada | 44.27 | -79.88 | 830 | 8153 |
| Campbellcroft | city | Ontario | Canada | 44.07 | -78.37 | 830 | 8 |
| Campbellford | city | Ontario | Canada | 44.30 | -77.80 | 830 | 7004 |
| Campden | city | Ontario | Canada | 43.14 | -79.43 | 830 | 8840 |
| Canboro | city | Ontario | Canada | 43.00 | -79.68 | 830 | 2010 |
| Candleboye | city | Ontario | Canada | 43.20 | -81.45 | 912 | 2947 |
| Canfield | city | Ontario | Canada | 42.98 | -79.74 | 830 | 408 |
| Cannington | city | Ontario | Canada | 44.35 | -79.03 | 843 | 5659 |
| Capreol | city | Ontario | Canada | 46.70 | -80.92 | 1017 | 6877 |
| Caramat | city | Ontario | Canada | 49.62 | -86.15 | 1007 | 0 |
| Carden | city | Ontario | Canada | 44.65 | -79.03 | 839 | 446 |
| Cardinal | city | Ontario | Canada | 44.79 | -75.38 | 229 | 5846 |
| Cargill | city | Ontario | Canada | 44.20 | -81.23 | 875 | 129 |
| Carleton Place | city | Ontario | Canada | 45.14 | -76.14 | 830 | 14262 |
| Carlisle | city | Ontario | Canada | 43.40 | -79.98 | 846 | 18506 |
| Carlow | city | Ontario | Canada | 43.78 | -81.63 | 895 | 1581 |
| Carp | city | Ontario | Canada | 45.35 | -76.03 | 347 | 14862 |
| Carrying Place | city | Ontario | Canada | 44.05 | -77.58 | 275 | 8325 |
| Cartier | city | Ontario | Canada | 46.70 | -81.55 | 1669 | 0 |
| Cascades | city | Ontario | Canada | 45.58 | -75.87 | 249 | 4135 |
| Casselman | city | Ontario | Canada | 45.32 | -75.09 | 206 | 6134 |
| Castleton | city | Ontario | Canada | 44.09 | -77.94 | 830 | 383 |
| Casummit Lake | city | Ontario | Canada | 51.47 | -92.35 | 1669 | 0 |
| Cat Lake | city | Ontario | Canada | 51.72 | -91.80 | 1145 | 277 |
| Cataraqui | city | Ontario | Canada | 44.23 | -76.48 | 252 | 54619 |
| Cavers | city | Ontario | Canada | 48.90 | -87.68 | 830 | 0 |
| Cayuga | city | Ontario | Canada | 42.95 | -79.85 | 830 | 0 |
| Ceasarea | city | Ontario | Canada | 44.16 | -78.83 | 905 | 2185 |
| Cedar Springs | city | Ontario | Canada | 42.28 | -82.03 | 830 | 2564 |
| Cedarbrae | city | Ontario | Canada | 44.25 | -79.29 | 830 | 8534 |
| Central Patricia | city | Ontario | Canada | 51.48 | -90.15 | 1128 | 127 |
| Centralia | city | Ontario | Canada | 43.28 | -81.47 | 859 | 1936 |
| Chalk River | city | Ontario | Canada | 46.02 | -77.45 | 830 | 3444 |
| Chapleau | city | Ontario | Canada | 47.83 | -83.40 | 1669 | 4432 |
| Charing Cross | city | Ontario | Canada | 42.33 | -82.10 | 830 | 410 |
| Charleston | city | Ontario | Canada | 44.58 | -75.99 | 383 | 1251 |
| Charlton | city | Ontario | Canada | 47.82 | -80.00 | 866 | 397 |
| Chatham | city | Ontario | Canada | 42.41 | -82.19 | 830 | 50232 |
| Chatham-Kent | city | Ontario | Canada | 42.41 | -82.19 | 830 | 50232 |
| Chatsworth | city | Ontario | Canada | 44.45 | -80.88 | 997 | 1185 |
| Chelmsford | city | Ontario | Canada | 46.58 | -81.20 | 912 | 5673 |
| Cheltenham | city | Ontario | Canada | 43.75 | -79.92 | 918 | 1074 |
| Cheminis | city | Ontario | Canada | 48.17 | -79.53 | 1033 | 386 |
| Cherry Valley | city | Ontario | Canada | 43.94 | -77.15 | 298 | 1534 |
| Chesley | city | Ontario | Canada | 44.30 | -81.10 | 925 | 3214 |
| Chesterville | city | Ontario | Canada | 45.11 | -75.23 | 229 | 3143 |
| Chippawa | city | Ontario | Canada | 43.08 | -79.05 | 830 | 56875 |
| Chippewa | city | Ontario | Canada | 43.08 | -79.05 | 830 | 56875 |
| Churchill | city | Ontario | Canada | 44.25 | -79.58 | 921 | 3266 |
| Chute-à-Blondeau | city | Ontario | Canada | 45.59 | -74.47 | 164 | 510 |
| Claremont | city | Ontario | Canada | 43.97 | -79.13 | 846 | 664 |
| Clarence | city | Ontario | Canada | 45.57 | -75.25 | 216 | 13798 |
| Clarence Creek | city | Ontario | Canada | 45.51 | -75.22 | 262 | 5016 |
| Clarence-Rockland | city | Ontario | Canada | 45.55 | -75.28 | 229 | 12943 |
| Clarkson | city | Ontario | Canada | 43.52 | -79.62 | 275 | 129296 |
| Clayton | city | Ontario | Canada | 45.19 | -76.33 | 830 | 298 |
| Clifford | city | Ontario | Canada | 43.97 | -80.98 | 1223 | 1362 |
| Clinton | city | Ontario | Canada | 43.62 | -81.54 | 931 | 6357 |
| Clute | city | Ontario | Canada | 49.18 | -81.07 | 830 | 19 |
| Coatsworth | city | Ontario | Canada | 42.17 | -82.36 | 830 | 169 |
| Coatsworth Station | city | Ontario | Canada | 42.17 | -82.36 | 830 | 169 |
| Cobalt | city | Ontario | Canada | 47.38 | -79.68 | 1020 | 2925 |
| Cobden | city | Ontario | Canada | 45.63 | -76.88 | 830 | 1649 |
| Coboconk | city | Ontario | Canada | 44.67 | -78.80 | 849 | 670 |
| Cobourg | city | Ontario | Canada | 43.96 | -78.17 | 285 | 20328 |
| Cochrane | city | Ontario | Canada | 49.07 | -81.02 | 830 | 4986 |
| Codes Corner | city | Ontario | Canada | 44.30 | -76.42 | 324 | 15630 |
| Coe Hill | city | Ontario | Canada | 44.85 | -77.83 | 1040 | 298 |
| Coe Hill Mines | city | Ontario | Canada | 44.85 | -77.83 | 1040 | 298 |
| Colborne | city | Ontario | Canada | 44.02 | -77.88 | 400 | 5466 |
| Colchester | city | Ontario | Canada | 41.99 | -82.93 | 830 | 4253 |
| Coldwater | city | Ontario | Canada | 44.72 | -79.82 | 830 | 10353 |
| Collingwood | city | Ontario | Canada | 44.50 | -80.22 | 830 | 16503 |
| Collins | city | Ontario | Canada | 50.28 | -89.45 | 1669 | 0 |
| Collins Bay | city | Ontario | Canada | 44.24 | -76.60 | 298 | 17635 |
| Colwell | city | Ontario | Canada | 44.35 | -79.78 | 830 | 17573 |
| Comber | city | Ontario | Canada | 42.23 | -82.55 | 830 | 2059 |
| Combermere | city | Ontario | Canada | 45.37 | -77.62 | 928 | 504 |
| Commanda | city | Ontario | Canada | 45.95 | -79.60 | 958 | 200 |
| Conestogo | city | Ontario | Canada | 43.54 | -80.51 | 1085 | 26849 |
| Coniston | city | Ontario | Canada | 46.48 | -80.85 | 918 | 6795 |
| Connaught | city | Ontario | Canada | 48.62 | -80.93 | 954 | 215 |
| Connaught Station | city | Ontario | Canada | 48.62 | -80.93 | 954 | 215 |
| Consecon | city | Ontario | Canada | 44.00 | -77.52 | 295 | 479 |
| Constance Bay | city | Ontario | Canada | 45.50 | -76.08 | 196 | 4201 |
| Cookstown | city | Ontario | Canada | 44.19 | -79.70 | 830 | 2585 |
| Copetown | city | Ontario | Canada | 43.25 | -80.06 | 830 | 13772 |
| Coppell | city | Ontario | Canada | 49.53 | -83.83 | 849 | 0 |
| Copper Cliff | city | Ontario | Canada | 46.47 | -81.07 | 869 | 17336 |
| Coral Rapids | city | Ontario | Canada | 50.20 | -81.67 | 830 | 0 |
| Corbett | city | Ontario | Canada | 43.25 | -81.69 | 830 | 636 |
| Corbetton | city | Ontario | Canada | 44.14 | -80.33 | 1669 | 795 |
| Corbyville | city | Ontario | Canada | 44.22 | -77.37 | 380 | 26470 |
| Cordova Mines | city | Ontario | Canada | 44.53 | -77.78 | 830 | 227 |
| Cornwall | city | Ontario | Canada | 45.02 | -74.73 | 147 | 39928 |
| Corunna | city | Ontario | Canada | 42.89 | -82.45 | 830 | 15887 |
| Cottam | city | Ontario | Canada | 42.13 | -82.75 | 830 | 5261 |
| Courtland | city | Ontario | Canada | 42.84 | -80.64 | 830 | 5361 |
| Courtright | city | Ontario | Canada | 42.82 | -82.47 | 830 | 12336 |
| Cowell | city | Ontario | Canada | 44.35 | -79.78 | 830 | 17573 |
| Crampton | city | Ontario | Canada | 42.95 | -80.94 | 898 | 1401 |
| Credition | city | Ontario | Canada | 43.30 | -81.55 | 830 | 1510 |
| Crediton | city | Ontario | Canada | 43.30 | -81.55 | 830 | 1510 |
| Creemore | city | Ontario | Canada | 44.32 | -80.10 | 935 | 761 |
| Creighton | city | Ontario | Canada | 46.45 | -81.17 | 990 | 3309 |
| Creighton Mine | city | Ontario | Canada | 46.45 | -81.17 | 990 | 3309 |
| Crilly | city | Ontario | Canada | 48.75 | -92.28 | 1164 | 0 |
| Crookston | city | Ontario | Canada | 44.43 | -77.45 | 830 | 974 |
| Crosby | city | Ontario | Canada | 44.65 | -76.25 | 830 | 820 |
| Crozier | city | Ontario | Canada | 48.61 | -93.52 | 1158 | 903 |
| Crysler | city | Ontario | Canada | 45.22 | -75.15 | 209 | 1340 |
| Crystal Beach | city | Ontario | Canada | 42.87 | -79.06 | 830 | 7505 |
| Crystal Beach | city | Ontario | Canada | 45.05 | -79.40 | 830 | 2217 |
| Crystal Falls | city | Ontario | Canada | 46.45 | -79.88 | 830 | 418 |
| Cumberland | city | Ontario | Canada | 45.52 | -75.41 | 246 | 19210 |
| Curran | city | Ontario | Canada | 45.50 | -74.99 | 196 | 2529 |
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