| Statistic | Reportedincidents | /100k people | Duncan/100k people | Nebraska/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,211 (estimate) | 1,847 | 2,119 |
| Murder | n/a | n/a | n/a | 2.1 | 5.0 |
| Rape | n/a | n/a | n/a | 43.5 | 37.5 |
| Robbery | n/a | n/a | n/a | 20.5 | 60.6 |
| Assault | n/a | n/a | n/a | 154.5 | 256.1 |
| Violent crime | n/a | n/a (estimate) | 263 (estimate) | 221 | 359 |
| Burglary | n/a | n/a | n/a | 155.1 | 229.2 |
| Theft | n/a | n/a | n/a | 1,218.9 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 252.6 | 258.8 |
| Property crime | n/a | n/a (estimate) | 1,947 (estimate) | 1,627 | 1,760 |


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| Item | Duncan | Nebraska | National |
| Law enforcement employees (officers & civilians) | n/a | 2,523 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 2.1 | 3.3 |
| State | Total offenders | Nebraska /100K | National /100K |
| Nebraska | 6,070 | 345 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Columbus, NE | 23,291 | 85 | 927 | 1,012 |
| Lakeview, NE | 378 | 223 | 1,649 | 1,872 |
| Osceola, NE | 826 | 259 | 1,912 | 2,171 |
| Bellwood, NE | 415 | 260 | 1,920 | 2,180 |
| Platte Center, NE | 378 | 262 | 1,936 | 2,198 |
| Monroe, NE | 299 | 268 | 1,979 | 2,247 |
| Shelby, NE | 714 | 270 | 1,999 | 2,269 |
| Duncan, NE | 487 | 263 | 1,947 | 2,211 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Canaseraga, NY | 487 | 558 | 2,524 | 3,081 |
| Danube, MN | 487 | 356 | 2,226 | 2,582 |
| Lyerly, GA | 487 | 500 | 2,568 | 3,068 |
| Badger, MN | 487 | 394 | 2,463 | 2,857 |
| Arkansas City, AR | 487 | 790 | 2,632 | 3,422 |
| Duncan, NE | 487 | 263 | 1,947 | 2,211 |