| | Ponca, NE | Clearfield, IA | United States |
| Population | 832 | 404 | 329,725,481 |
| Female Population | 46.0% | 44.3% | 50.5% |
| Male Population | 54.0% | 55.7% | 49.5% |
| Median Age | 36.7 | 41.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 963 | 367 | 309,327,143 |
| Population - 2000 | 1,062 | 371 | 285,036,114 |
| Population - 1990 | 877 | 417 | 251,960,433 |
| Pop. 2000 to Now | -14.0% | -7.6% | 15.6% |
| Pop. 1990 to Now | 4.1% | -17.8% | 30.8% |
| space4 | | | |
| Population Density | 1,144.4 | 321.7 | 93.4 |
| Land Area | 0.7 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ponca, NE | Clearfield, IA | United States |
| Age 0 to 4 | 12.9% | 5.0% | 5.9% |
| Age 5 to 9 | 4.3% | 8.2% | 6.1% |
| Age 10 to 14 | 2.5% | 5.4% | 6.6% |
| Age 15 to 17 | 3.4% | 3.2% | 3.9% |
| Age 18 to 20 | 2.2% | 7.4% | 4.0% |
| Age 21 to 24 | 8.7% | 2.7% | 5.2% |
| Age 25 to 34 | 12.6% | 7.9% | 13.8% |
| Age 35 to 44 | 12.3% | 14.9% | 12.9% |
| Age 45 to 54 | 6.5% | 3.5% | 12.6% |
| Age 55 to 59 | 5.3% | 4.2% | 6.7% |
| Age 60 to 64 | 3.8% | 8.2% | 6.3% |
| Age 65 to 74 | 12.0% | 18.1% | 9.6% |
| Age 75 to 84 | 10.3% | 8.4% | 4.5% |
| Age 85 and over | 3.2% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ponca, NE | Clearfield, IA | United States |
| White | 87.6% | 99.3% | 59.4% |
| Black | 0.4% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.8% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.9% | 0.7% | 3.2% |
| Hispanic | 8.3% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ponca, NE | Clearfield, IA | United States |
| Married Population | 51.6% | 50.5% | 49.8% |
| Currently Married | 51.2% | 47.4% | 48.0% |
| Married but Separated | 0.4% | 3.0% | 1.8% |
| Single Population | 48.4% | 49.5% | 50.2% |
| Never Married | 28.7% | 23.7% | 33.8% |
| Divorced | 11.8% | 19.8% | 10.8% |
| Widowed | 7.8% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 2.10 | 2.42 | 2.60 |
| Households | 376 | 157 | 124,010,992 |
| Family Households | 193 | 109 | 80,755,759 |
| Married couple, w/children | 28.0% | 23.9% | 30.5% |
| Married couple, no children | 56.5% | 47.7% | 42.9% |
| Non Family Households | 183 | 48 | 43,255,233 |
| Single householder, w/children | 13.0% | 17.4% | 15.8% |
| Single householder, no children | 2.6% | 11.0% | 10.8% |