| | Gothenburg, NE | Colby, KS | United States |
| Population | 3,476 | 5,434 | 329,725,481 |
| Female Population | 48.2% | 50.3% | 50.5% |
| Male Population | 51.8% | 49.7% | 49.5% |
| Median Age | 40.6 | 32.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,593 | 5,416 | 309,327,143 |
| Population - 2000 | 3,619 | 5,450 | 285,036,114 |
| Population - 1990 | 3,232 | 5,396 | 251,960,433 |
| Pop. 2000 to Now | -5.4% | -2.5% | 15.6% |
| Pop. 1990 to Now | 5.9% | -1.5% | 30.8% |
| space4 | | | |
| Population Density | 969.9 | 1,465.9 | 93.4 |
| Land Area | 3.6 | 3.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gothenburg, NE | Colby, KS | United States |
| Age 0 to 4 | 5.6% | 6.3% | 5.9% |
| Age 5 to 9 | 10.6% | 7.3% | 6.1% |
| Age 10 to 14 | 5.2% | 7.4% | 6.6% |
| Age 15 to 17 | 5.2% | 3.2% | 3.9% |
| Age 18 to 20 | 3.0% | 7.9% | 4.0% |
| Age 21 to 24 | 4.8% | 6.7% | 5.2% |
| Age 25 to 34 | 10.9% | 13.7% | 13.8% |
| Age 35 to 44 | 10.3% | 8.2% | 12.9% |
| Age 45 to 54 | 11.8% | 9.8% | 12.6% |
| Age 55 to 59 | 5.4% | 4.6% | 6.7% |
| Age 60 to 64 | 8.9% | 8.8% | 6.3% |
| Age 65 to 74 | 9.8% | 7.5% | 9.6% |
| Age 75 to 84 | 4.6% | 4.8% | 4.5% |
| Age 85 and over | 3.9% | 3.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gothenburg, NE | Colby, KS | United States |
| White | 94.2% | 88.6% | 59.4% |
| Black | 0.0% | 0.7% | 12.2% |
| Asian | 0.7% | 1.6% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 3.5% | 0.4% | 3.2% |
| Hispanic | 1.5% | 8.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gothenburg, NE | Colby, KS | United States |
| Married Population | 55.0% | 52.1% | 49.8% |
| Currently Married | 54.4% | 51.6% | 48.0% |
| Married but Separated | 0.6% | 0.4% | 1.8% |
| Single Population | 45.0% | 47.9% | 50.2% |
| Never Married | 25.0% | 33.9% | 33.8% |
| Divorced | 12.1% | 10.5% | 10.8% |
| Widowed | 7.9% | 3.6% | 5.6% |
| space5 | | | |
| Household Size | 2.41 | 2.35 | 2.60 |
| Households | 1,414 | 2,146 | 124,010,992 |
| Family Households | 895 | 1,259 | 80,755,759 |
| Married couple, w/children | 39.3% | 37.4% | 30.5% |
| Married couple, no children | 39.3% | 43.5% | 42.9% |
| Non Family Households | 519 | 887 | 43,255,233 |
| Single householder, w/children | 15.9% | 8.3% | 15.8% |
| Single householder, no children | 5.5% | 10.8% | 10.8% |