| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Dunca | city | Huambo | Angola | -11.97 | 15.87 | 5869 | 5811 |
| Duncaga | city | Afar | Ethiopia | 9.67 | 40.65 | 2696 | 3576 |
| Duncairn | city | Eastern Cape | South Africa | -33.40 | 25.90 | 1669 | 223 |
| Duncal | city | Zimbabwe | -20.17 | 28.78 | 4491 | 3097 | |
| Duncalville | city | KwaZulu-Natal | South Africa | -28.68 | 30.88 | 2509 | 7431 |
| Duncan | city | British Columbia | Canada | 48.78 | -123.70 | 200 | 14230 |
| Duncan | city | Latibonit | Haiti | 19.70 | -72.72 | 830 | 28906 |
| Duncan | city | North West | South Africa | -25.75 | 23.73 | 3628 | 135 |
| Duncan | city | Penal/Debe | Trinidad and Tobago | 10.25 | -61.46 | 42 | 64401 |
| Duncan | city | Hardap | Namibia | -25.30 | 18.63 | 3671 | 0 |
| Duncan | city | Arizona | United States | 32.72 | -109.11 | 4189 | |
| Duncan | city | Arkansas | United States | 34.62 | -91.25 | 173 | |
| Duncan | city | Alabama | United States | 32.97 | -85.90 | 830 | |
| Duncan | city | Alabama | United States | 33.46 | -86.88 | 830 | |
| Duncan | city | Colorado | United States | 37.87 | -105.61 | 8389 | |
| Duncan | city | Illinois | United States | 40.98 | -89.79 | 830 | |
| Duncan | city | Indiana | United States | 38.29 | -85.92 | 898 | |
| Duncan | city | Iowa | United States | 43.10 | -93.71 | 1249 | |
| Duncan | city | Kentucky | United States | 37.85 | -84.99 | 830 | |
| Duncan | city | Kentucky | United States | 37.36 | -84.73 | 1669 | |
| Duncan | city | Mississippi | United States | 34.04 | -90.74 | 147 | |
| Duncan | city | Missouri | United States | 37.28 | -92.69 | 1669 | |
| Duncan | city | Nebraska | United States | 41.39 | -97.49 | 1669 | |
| Duncan | city | North Carolina | United States | 35.56 | -78.87 | 413 | |
| Duncan | city | Oklahoma | United States | 34.50 | -97.96 | 1115 | |
| Duncan | city | Oregon | United States | 45.56 | -118.32 | 2509 | |
| Duncan | city | Pennsylvania | United States | 41.65 | -77.26 | 1801 | |
| Duncan | city | South Carolina | United States | 34.94 | -82.15 | 849 | |
| Duncan | city | Tennessee | United States | 35.80 | -83.96 | 859 | |
| Duncan | city | Virginia | United States | 36.91 | -80.49 | 2575 | |
| Duncan | city | Washington | United States | 47.50 | -117.34 | 2509 | |
| Duncan | city | West Virginia | United States | 38.90 | -81.57 | 928 | |
| Duncan (historical) | city | Montana | United States | 48.20 | -114.30 | 3349 | |
| Duncan Airport | airport | 48.75 | -123.71 | 300 | 0 | ||
| Duncan Bay | city | British Columbia | Canada | 50.07 | -125.28 | 85 | 9042 |
| Duncan Chapel | city | South Carolina | United States | 33.30 | -80.56 | 101 | |
| Duncan Corners | city | California | United States | 34.47 | -117.40 | 3349 | |
| Duncan Crossing | city | Maryland | United States | 38.40 | -75.31 | 29 | |
| Duncan Crossroads | city | Alabama | United States | 34.54 | -85.91 | 1236 | |
| Duncan Estates | city | Utah | United States | 40.95 | -111.88 | 4376 | |
| Duncan Falls | city | Ohio | United States | 39.87 | -81.91 | 830 | |
| Duncan Glen | city | Delaware | United States | 39.74 | -75.65 | 104 | |
| Duncan Groves | city | Florida | United States | 27.92 | -82.24 | 104 | |
| Duncan Hills | city | Tennessee | United States | 35.09 | -85.32 | 830 | |
| Duncan Knoll | city | Massachusetts | United States | 42.21 | -72.55 | 219 | |
| Duncan Mill | city | Virginia | United States | 36.76 | -82.65 | 1669 | |
| Duncan Mills | city | Illinois | United States | 40.34 | -90.19 | 830 | |
| Duncan Padgett Mobile Home Park | city | Florida | United States | 26.81 | -80.66 | 16 | |
| Duncan Place | city | Idaho | United States | 42.04 | -114.81 | 5456 | |
| Duncan Ranch Colony | city | Montana | United States | 46.44 | -110.02 | 4399 | |
| Duncan Ridge (historical) | city | Kentucky | United States | 36.98 | -87.04 | 830 | |
| Duncan Springs | city | California | United States | 38.95 | -123.12 | 1049 | |
| Duncan Town | city | Ragged Island | Bahamas, The | 22.20 | -75.73 | 3 | 44 |
| Duncan Township | city | South Carolina | United States | 34.56 | -82.27 | 830 | |
| Duncan Village | city | Eastern Cape | South Africa | -33.01 | 27.86 | 91 | 184326 |
| Duncan Village | city | Delaware | United States | 39.73 | -75.64 | 88 | |
| Duncan Woods | city | Delaware | United States | 39.74 | -75.64 | 82 | |
| Duncanganj | city | Uttar Pradesh | India | 26.01 | 83.98 | 196 | 92787 |
| Duncannon | city | Wexford | Ireland | 52.22 | -6.92 | 9 | 1633 |
| Duncannon | city | Pennsylvania | United States | 40.40 | -77.02 | 390 | |
| Duncannon Bridge | city | Cork | Ireland | 52.09 | -9.19 | 830 | 1768 |
| Duncanon | city | Kentucky | United States | 37.66 | -84.35 | 839 | |
| Duncans | city | Trelawny | Jamaica | 18.47 | -77.54 | 830 | 5805 |
| Duncans Addition | city | Illinois | United States | 41.88 | -87.65 | 830 | |
| Duncans Bridge | city | Missouri | United States | 39.58 | -92.26 | 830 | |
| Duncans Creek | city | New South Wales | Australia | -31.37 | 151.20 | 3349 | 149 |
| Duncans Creek | city | North Carolina | United States | 35.45 | -81.72 | 1099 | |
| Duncans Gap (historical) | city | Arkansas | United States | 35.04 | -92.19 | 396 | |
| Duncans Hill | city | Maryland | United States | 39.59 | -76.89 | 830 | |
| Duncans Mills | city | California | United States | 38.45 | -123.06 | 262 | |
| Duncans Mobile Home Park | city | Florida | United States | 27.95 | -82.06 | 101 | |
| Duncans Mobile Home Park | city | Washington | United States | 48.88 | -122.58 | 52 | |
| Duncans Shed (historical) | city | Kentucky | United States | 36.86 | -86.82 | 830 | |
| Duncansland | city | Meath | Ireland | 53.63 | -6.71 | 167 | 14921 |
| Duncanston | city | Mashonaland East | Zimbabwe | -18.75 | 30.87 | 4507 | 2384 |
| Duncansville | city | Pennsylvania | United States | 40.42 | -78.43 | 1092 | |
| Duncantown | city | Tennessee | United States | 35.33 | -86.04 | 997 | |
| Duncanville | city | Gauteng | South Africa | -26.65 | 27.94 | 5029 | 55388 |
| Duncanville | city | Alabama | United States | 33.06 | -87.44 | 223 | |
| Duncanville | city | Illinois | United States | 38.95 | -87.70 | 830 | |
| Duncanville | city | Tennessee | United States | 35.45 | -86.84 | 905 | |
| Duncanville | city | Texas | United States | 32.65 | -96.91 | 830 | |
| Duncanville | city | Virginia | United States | 36.82 | -81.99 | 1856 | |
| Duncanwood | city | Ohio | United States | 40.20 | -80.95 | 1066 | |
| Duncar | city | Amara | Ethiopia | 12.22 | 36.00 | 2893 | 745 |
| Duncassa | city | Borgou | Benin | 10.35 | 3.15 | 964 | 2831 |
| Duncata | city | Oromiya | Ethiopia | 8.28 | 41.85 | 4189 | 0 |
| Duncey | city | Bourgogne | France | 47.96 | 4.64 | 830 | 758 |
| Duncha | city | Hainan | China | 19.89 | 109.90 | 196 | 14155 |
| Dunchang | city | Xizang | China | 29.30 | 98.70 | 11748 | 745 |
| Dunchang | city | Hong Kong | 22.38 | 114.27 | 16 | 381011 | |
| Dunchangwu | city | Zhejiang | China | 30.90 | 120.05 | 72 | 147087 |
| Dunchar Banal | city | Khyber Pakhtunkhwa | Pakistan | 35.75 | 72.62 | 10068 | 18483 |
| Dunche | city | Jiangsu | China | 32.19 | 119.96 | 22 | 96790 |
| Dunchendi | city | Borno | Nigeria | 10.44 | 12.31 | 1669 | 9834 |
| Dunchi | city | Xizang | China | 28.70 | 86.97 | 14383 | 0 |
| Dunchido | city | Busan | Korea, Republic of (South) | 35.15 | 128.89 | 3 | 54805 |
| Dunchie | city | Ghana | 6.32 | -1.50 | 1092 | 19528 | |
| Dunchirikope | city | Ghana | 6.02 | 0.53 | 160 | 12913 | |
| Dunchon-dong | city | Seoul | Korea, Republic of (South) | 37.53 | 127.14 | 114 | 1330318 |
| Dunchondong | city | Seoul | Korea, Republic of (South) | 37.53 | 127.14 | 114 | 1330318 |
| Dunchurch | city | Warwickshire | United Kingdom | 52.33 | -1.28 | 295 | 16708 |
| Dunci | city | Stip | Macedonia | 41.63 | 22.21 | 1158 | 5456 |
| Dunciken | city | Warminsko-Mazurskie | Poland | 54.18 | 22.25 | 830 | 2875 |
| Duncka | city | Berat | Albania | 40.69 | 20.20 | 1751 | 4693 |
| Duncke | city | Berat | Albania | 40.69 | 20.20 | 1751 | 4693 |
| Dunckley | city | Colorado | United States | 40.30 | -107.19 | 7752 | |
| Duncombe | city | Zimbabwe | -17.40 | 30.92 | 4189 | 4619 | |
| Duncombe | city | Iowa | United States | 42.47 | -93.99 | 1105 | |
| Duncormick | city | Wexford | Ireland | 52.23 | -6.65 | 13 | 1687 |
| Duncott | city | Pennsylvania | United States | 40.71 | -76.24 | 898 | |
| Duncow | city | Dumfries and Galloway | United Kingdom | 55.13 | -3.62 | 200 | 9925 |
| Duncraggen | city | Eastern Cape | South Africa | -32.28 | 26.95 | 4189 | 182 |
| Duncrevie | city | Mashonaland West | Zimbabwe | -18.63 | 29.90 | 3713 | 2086 |
| Duncummin | city | Ireland | 52.49 | -8.37 | 282 | 2119 | |
| Duncun | city | Guangdong | China | 21.70 | 112.78 | 26 | 17148 |
| Duncuo | city | Fujian | China | 25.03 | 118.41 | 367 | 68253 |
| Duncur | city | Binshangul Gumuz | Ethiopia | 11.98 | 35.92 | 2509 | 779 |
| Duncur | city | Amara | Ethiopia | 12.22 | 36.00 | 2893 | 745 |
| Duncy | city | Minskaya Oblast' | Belarus | 52.74 | 27.74 | 830 | 998 |