| | Tekamah, NE | Marathon, IA | United States |
| Population | 1,909 | 186 | 329,725,481 |
| Female Population | 53.3% | 56.5% | 50.5% |
| Male Population | 46.7% | 43.6% | 49.5% |
| Median Age | 41 | 49 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,822 | 240 | 309,327,143 |
| Population - 2000 | 1,892 | 302 | 285,036,114 |
| Population - 1990 | 1,852 | 320 | 251,960,433 |
| Pop. 2000 to Now | -9.5% | -24.5% | 15.6% |
| Pop. 1990 to Now | -7.5% | -28.8% | 30.8% |
| space4 | | | |
| Population Density | 1,194.6 | 248.3 | 93.4 |
| Land Area | 1.6 | 0.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Tekamah, NE | Marathon, IA | United States |
| Age 0 to 4 | 8.7% | 0.5% | 5.9% |
| Age 5 to 9 | 10.3% | 1.6% | 6.1% |
| Age 10 to 14 | 6.0% | 7.5% | 6.6% |
| Age 15 to 17 | 5.2% | 9.7% | 3.9% |
| Age 18 to 20 | 2.0% | 1.1% | 4.0% |
| Age 21 to 24 | 3.0% | 2.2% | 5.2% |
| Age 25 to 34 | 11.4% | 14.5% | 13.8% |
| Age 35 to 44 | 7.9% | 7.5% | 12.9% |
| Age 45 to 54 | 13.4% | 18.3% | 12.6% |
| Age 55 to 59 | 4.2% | 5.9% | 6.7% |
| Age 60 to 64 | 7.9% | 12.9% | 6.3% |
| Age 65 to 74 | 9.2% | 12.4% | 9.6% |
| Age 75 to 84 | 7.1% | 5.4% | 4.5% |
| Age 85 and over | 3.6% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Tekamah, NE | Marathon, IA | United States |
| White | 94.1% | 88.2% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 2.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.1% | 5.4% | 3.2% |
| Hispanic | 1.7% | 6.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Tekamah, NE | Marathon, IA | United States |
| Married Population | 46.5% | 53.6% | 49.8% |
| Currently Married | 45.4% | 53.6% | 48.0% |
| Married but Separated | 1.1% | 0.0% | 1.8% |
| Single Population | 53.5% | 46.4% | 50.2% |
| Never Married | 29.1% | 23.8% | 33.8% |
| Divorced | 14.6% | 13.1% | 10.8% |
| Widowed | 9.8% | 9.5% | 5.6% |
| space5 | | | |
| Household Size | 2.62 | 2.27 | 2.60 |
| Households | 720 | 82 | 124,010,992 |
| Family Households | 450 | 51 | 80,755,759 |
| Married couple, w/children | 27.8% | 15.7% | 30.5% |
| Married couple, no children | 42.9% | 68.6% | 42.9% |
| Non Family Households | 270 | 31 | 43,255,233 |
| Single householder, w/children | 21.6% | 13.7% | 15.8% |
| Single householder, no children | 7.8% | 2.0% | 10.8% |