Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Cooperstown Swamp | Swamp | 257 | Manitowoc | 44 15 21 N | 087 52 05 W |
| Coopman Creek | Stream | | Oconto | 44 51 29 N | 088 08 10 W |
| Copeland Park | Park | 199 | La Crosse | 43 50 37 N | 091 14 55 W |
| Copeland Park | Park | 199 | La Crosse | 43 50 37 N | 091 14 55 W |
| Copp Cemetery | Cemetery | 293 | Chippewa | 45 00 34 N | 091 17 26 W |
| Coppens Corner | Populated Place | 273 | Brown | 44 27 30 N | 087 47 08 W |
| Copper Creek | Stream | | Crawford | 43 18 51 N | 091 03 45 W |
| Copper Creek | Stream | | Douglas | 46 36 27 N | 092 06 17 W |
| Copper Creek | Stream | | Forest | 45 41 10 N | 088 58 10 W |
| Copper Creek | Stream | | Lafayette | 42 36 30 N | 090 02 10 W |
| Copper Creek | Stream | | Sauk | 43 30 58 N | 089 56 34 W |
| Copper Creek | Stream | | Taylor | 45 19 29 N | 090 09 15 W |
| Copper Culture Mounds State Park | Park | 182 | Oconto | 44 53 17 N | 087 53 56 W |
| Copper Falls | Falls | 314 | Ashland | 46 22 23 N | 090 38 24 W |
| Copper Falls State Park | Park | 46 | Ashland | 46 22 28 N | 090 38 28 W |
| Copper Lake | Lake | 458 | Lincoln | 45 19 29 N | 089 36 43 W |
| Copper Range Campground | Locale | 289 | Douglas | 46 36 32 N | 091 34 54 W |
| Copper River | Stream | | Lincoln | 45 12 10 N | 089 46 02 W |
| Copper School (historical) | School | 409 | Lincoln | 45 12 38 N | 089 48 25 W |
| Coppermine Dam | Dam | 296 | Douglas | 46 12 53 N | 092 01 41 W |
| Coppes Lake | Lake | 526 | Lincoln | 45 26 46 N | 089 27 29 W |
| Coral City | Populated Place | 255 | Trempealeau | 44 22 46 N | 091 16 39 W |
| Coral City School (historical) | School | 258 | Trempealeau | 44 22 41 N | 091 16 35 W |
| Corbett Lake | Lake | 342 | Rusk | 45 27 32 N | 091 06 20 W |
| Core Hollow | Valley | | Richland | 43 19 48 N | 090 31 53 W |
| Core Hollow School (historical) | School | 254 | Richland | 43 19 57 N | 090 34 14 W |
| Corey School (historical) | School | 382 | Barron | 45 27 12 N | 092 00 41 W |
| Corinth | Populated Place | 436 | Marathon | 45 00 10 N | 090 08 21 W |
| Corinth Airport | Airport | 434 | Marathon | 44 59 58 N | 090 08 58 W |
| Corinth School | School | 440 | Marathon | 45 00 11 N | 090 10 09 W |
| Corky Lake | Lake | 487 | Oneida | 45 49 56 N | 089 30 05 W |
| Cormier | Populated Place | 180 | Brown | 44 33 46 N | 088 04 41 W |
| Cormier Early Childhood Center | School | 183 | Brown | 44 29 05 N | 088 02 56 W |
| Cornelia | Populated Place | 286 | Grant | 42 41 22 N | 090 34 39 W |
| Cornelius Tourist Information Center | Building | 192 | Crawford | 43 02 57 N | 091 08 59 W |
| Cornell | Populated Place | 331 | Chippewa | 45 10 02 N | 091 08 58 W |
| Cornell 2WP7 Dam | Dam | 305 | Chippewa | 45 09 51 N | 091 09 32 W |
| Cornell Elementary School | School | 336 | Chippewa | 45 10 02 N | 091 08 49 W |
| Cornell Flowage | Reservoir | 305 | Chippewa | 45 09 51 N | 091 09 32 W |
| Cornell Flowage 4797 | Reservoir | 292 | Chippewa | 45 09 48 N | 091 09 31 W |
| Cornell High School | School | 338 | Chippewa | 45 09 57 N | 091 08 33 W |
| Cornell Lake | Lake | 309 | Chippewa | 45 07 06 N | 091 20 14 W |
| Cornell Lake | Lake | 274 | Waukesha | 43 08 21 N | 088 22 48 W |
| Cornell Municipal Airport | Airport | 348 | Chippewa | 45 09 56 N | 091 06 21 W |
| Corner Lake | Lake | 482 | Oneida | 45 43 06 N | 089 36 48 W |
| Corner Marsh | Reservoir | 297 | Wood | 44 18 27 N | 090 08 06 W |
| Corner Marsh Control Dam | Dam | 297 | Wood | 44 18 54 N | 090 07 42 W |
| Corner School | School | 275 | Douglas | 46 37 09 N | 091 43 13 W |
| Corner View School (historical) | School | 334 | Pierce | 44 41 57 N | 092 11 45 W |
| Corner, Middle Marshes Reservoir | Reservoir | 44 | Wood | 44 18 54 N | 090 07 42 W |
| Cornerstone Assembly of God Church | Church | 190 | Kenosha | 42 34 35 N | 087 50 10 W |
| Cornerstone Baptist Church | Church | 274 | Dodge | 43 27 31 N | 088 49 55 W |
| Cornerstone Christian Academy | School | 198 | Sheboygan | 43 45 50 N | 087 43 30 W |
| Cornerstone Fellowship Church | Church | 276 | Walworth | 42 33 01 N | 088 34 39 W |
| Corness Cemetery | Cemetery | 260 | Trempealeau | 44 17 29 N | 091 13 56 W |
| Corning Creek | Stream | | Adams | 43 43 55 N | 089 50 00 W |
| Corning Lake | Lake | 249 | Columbia | 43 37 26 N | 089 39 11 W |
| Corning School (historical) | School | 427 | Lincoln | 45 09 48 N | 089 50 18 W |
| Corning Townhall | Building | 428 | Lincoln | 45 09 50 N | 089 50 15 W |
| Cornsheller Rapids | Rapids | 414 | Sawyer | 45 40 26 N | 090 41 11 W |
| Cornucopia | Populated Place | 189 | Bayfield | 46 51 14 N | 091 06 07 W |
| Cornucopia Field | Airport | 232 | Bayfield | 46 51 60 N | 091 05 01 W |
| Corpus Christi Church | Church | 412 | Polk | 45 37 42 N | 092 10 42 W |
| Corpus Christi Roman Catholic Church | Church | 199 | Door | 44 49 45 N | 087 23 44 W |
| Corpus Christi School | School | 198 | Door | 44 49 48 N | 087 23 45 W |
| Correction Creek | Stream | | Taylor | 45 06 41 N | 090 20 42 W |
| Corrine Lake | Lake | 505 | Vilas | 46 11 58 N | 089 31 50 W |
| Cortland (historical) | Populated Place | 219 | Trempealeau | 44 12 50 N | 091 34 04 W |
| Cortland Cemetery | Cemetery | 231 | Trempealeau | 44 12 46 N | 091 33 42 W |
| Cortland School (historical) | School | 227 | Trempealeau | 44 12 46 N | 091 33 60 W |
| Coruick Lake | Lake | 299 | Burnett | 45 56 51 N | 092 11 49 W |
| Corwin (historical) | Populated Place | 386 | Richland | 43 30 12 N | 090 16 53 W |
| Corwin Ridge | Ridge | 370 | Richland | 43 30 58 N | 090 16 52 W |
| Cosgrove Lake | Lake | 360 | Florence | 45 53 40 N | 088 10 00 W |
| Cotas Lake | Lake | 261 | Marinette | 45 37 03 N | 087 53 53 W |
| Cott Lake | Lake | 371 | Menominee | 45 05 08 N | 088 46 57 W |
| Cottage Grove | Populated Place | 269 | Dane | 43 04 34 N | 089 11 58 W |
| Cottage Grove Cemetery | Cemetery | 275 | Dane | 43 05 10 N | 089 12 42 W |
| Cottage Grove Elementary School | School | 286 | Dane | 43 05 03 N | 089 11 57 W |
| Cottage Grove Farm | Locale | 370 | Richland | 43 25 35 N | 090 38 42 W |
| Cottage Grove Farm | Locale | 255 | Richland | 43 28 53 N | 090 21 29 W |
| Cottage Inn Branch | Stream | | Lafayette | 42 45 02 N | 090 14 00 W |
| Cottage Inn School | School | 328 | Lafayette | 42 47 07 N | 090 18 00 W |
| Cottage School | School | 240 | Columbia | 43 32 19 N | 089 27 11 W |
| Cottage School (historical) | School | 247 | Kenosha | 42 31 55 N | 088 15 07 W |
| Cotter Hill | Summit | 341 | Pierce | 44 34 30 N | 092 10 32 W |
| Cotter Hill School (historical) | School | 244 | Pierce | 44 34 57 N | 092 10 06 W |
| Cotter School (historical) | School | 442 | Lincoln | 45 16 50 N | 089 39 43 W |
| Cotton Island | Island | 261 | Dodge | 43 29 05 N | 088 37 46 W |
| Cottonville | Populated Place | 290 | Adams | 44 03 30 N | 089 48 23 W |
| Cottonville Cemetery | Cemetery | 290 | Adams | 44 03 16 N | 089 49 36 W |
| Cottonville Rocks | Summit | 306 | Adams | 44 02 11 N | 089 50 07 W |
| Cottonville School (historical) | School | 293 | Adams | 44 02 60 N | 089 50 00 W |
| Cottonwood Grove School (historical) | School | 186 | Oconto | 44 44 10 N | 088 00 32 W |
| Couderay | Populated Place | 384 | Sawyer | 45 47 44 N | 091 18 25 W |
| Couderay River | Stream | | Sawyer | 45 44 20 N | 091 13 02 W |
| Coudray Lake | Lake | 347 | Barron | 45 22 40 N | 091 33 47 W |
| Coughlin Hall | Building | 196 | Milwaukee | 43 02 16 N | 087 55 42 W |
| Couillardville School (historical) | School | 189 | Oconto | 44 51 47 N | 087 59 03 W |
| Coulee Golf Bowl | Locale | 227 | La Crosse | 43 53 10 N | 091 12 18 W |
| Coulee Ridge | Ridge | 369 | Iowa | 43 03 07 N | 089 52 59 W |
| Coulee State Experimental Forest | Forest | 320 | La Crosse | 43 51 07 N | 091 02 01 W |
| Coulson H2047 Dam | Dam | 334 | Pierce | 44 43 06 N | 092 29 31 W |
| Coulter Hollow | Valley | | Richland | 43 25 45 N | 090 33 40 W |
| Coulter Slough | Channel | 187 | Marinette | 45 07 05 N | 087 40 32 W |
| Coumbe Cemetery | Cemetery | 216 | Richland | 43 12 28 N | 090 35 08 W |
| Coumbe Island | Island | 201 | Grant | 43 11 52 N | 090 34 51 W |
| Council Bay | Populated Place | 221 | La Crosse | 44 03 27 N | 091 17 02 W |
| Council Bay School (historical) | School | 235 | La Crosse | 44 02 58 N | 091 16 19 W |
| Council Creek | Stream | | Monroe | 43 59 56 N | 090 28 32 W |