| | Hawarden, IA | Osage, IA | United States |
| Population | 2,675 | 3,581 | 329,725,481 |
| Female Population | 46.4% | 54.2% | 50.5% |
| Male Population | 53.6% | 45.8% | 49.5% |
| Median Age | 35.6 | 44.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,533 | 3,627 | 309,327,143 |
| Population - 2000 | 2,478 | 3,451 | 285,036,114 |
| Population - 1990 | 2,439 | 3,439 | 251,960,433 |
| Pop. 2000 to Now | -1.4% | 2.8% | 15.6% |
| Pop. 1990 to Now | 0.2% | 3.2% | 30.8% |
| space4 | | | |
| Population Density | 962.9 | 1,574.1 | 93.4 |
| Land Area | 2.8 | 2.3 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hawarden, IA | Osage, IA | United States |
| Age 0 to 4 | 8.7% | 5.4% | 5.9% |
| Age 5 to 9 | 8.2% | 5.4% | 6.1% |
| Age 10 to 14 | 8.8% | 5.9% | 6.6% |
| Age 15 to 17 | 3.8% | 3.2% | 3.9% |
| Age 18 to 20 | 2.2% | 2.9% | 4.0% |
| Age 21 to 24 | 0.7% | 5.5% | 5.2% |
| Age 25 to 34 | 16.6% | 13.4% | 13.8% |
| Age 35 to 44 | 9.9% | 8.9% | 12.9% |
| Age 45 to 54 | 10.5% | 12.3% | 12.6% |
| Age 55 to 59 | 6.7% | 6.1% | 6.7% |
| Age 60 to 64 | 7.0% | 8.4% | 6.3% |
| Age 65 to 74 | 7.3% | 9.7% | 9.6% |
| Age 75 to 84 | 7.3% | 8.6% | 4.5% |
| Age 85 and over | 2.3% | 4.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hawarden, IA | Osage, IA | United States |
| White | 68.1% | 95.2% | 59.4% |
| Black | 0.1% | 1.3% | 12.2% |
| Asian | 0.0% | 2.0% | 5.6% |
| Native American | 0.2% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.0% | 0.3% | 3.2% |
| Hispanic | 30.5% | 1.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hawarden, IA | Osage, IA | United States |
| Married Population | 61.1% | 53.1% | 49.8% |
| Currently Married | 58.8% | 51.8% | 48.0% |
| Married but Separated | 2.3% | 1.3% | 1.8% |
| Single Population | 38.9% | 46.9% | 50.2% |
| Never Married | 20.2% | 25.0% | 33.8% |
| Divorced | 10.6% | 11.6% | 10.8% |
| Widowed | 8.1% | 10.3% | 5.6% |
| space5 | | | |
| Household Size | 2.70 | 2.07 | 2.60 |
| Households | 972 | 1,677 | 124,010,992 |
| Family Households | 670 | 983 | 80,755,759 |
| Married couple, w/children | 37.5% | 24.6% | 30.5% |
| Married couple, no children | 42.4% | 53.6% | 42.9% |
| Non Family Households | 302 | 694 | 43,255,233 |
| Single householder, w/children | 11.8% | 16.1% | 15.8% |
| Single householder, no children | 8.4% | 5.7% | 10.8% |