| | Boone, IA | Spring Lake, NC | United States |
| Population | 12,509 | 11,629 | 329,725,481 |
| Female Population | 50.2% | 50.8% | 50.5% |
| Male Population | 49.8% | 49.2% | 49.5% |
| Median Age | 39.5 | 24.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,647 | 11,571 | 309,327,143 |
| Population - 2000 | 12,803 | 8,098 | 285,036,114 |
| Population - 1990 | 12,392 | 7,524 | 251,960,433 |
| Pop. 2000 to Now | -3.1% | 47.9% | 15.6% |
| Pop. 1990 to Now | 0.1% | 59.2% | 30.8% |
| space4 | | | |
| Population Density | 1,376.7 | 500.7 | 93.4 |
| Land Area | 9.1 | 23.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Boone, IA | Spring Lake, NC | United States |
| Age 0 to 4 | 6.2% | 10.7% | 5.9% |
| Age 5 to 9 | 5.6% | 6.5% | 6.1% |
| Age 10 to 14 | 5.1% | 6.3% | 6.6% |
| Age 15 to 17 | 4.2% | 2.8% | 3.9% |
| Age 18 to 20 | 3.6% | 9.1% | 4.0% |
| Age 21 to 24 | 6.0% | 15.2% | 5.2% |
| Age 25 to 34 | 13.9% | 19.5% | 13.8% |
| Age 35 to 44 | 13.3% | 10.1% | 12.9% |
| Age 45 to 54 | 13.1% | 6.7% | 12.6% |
| Age 55 to 59 | 6.2% | 2.7% | 6.7% |
| Age 60 to 64 | 6.8% | 4.4% | 6.3% |
| Age 65 to 74 | 9.5% | 4.5% | 9.6% |
| Age 75 to 84 | 5.2% | 1.3% | 4.5% |
| Age 85 and over | 1.3% | 0.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Boone, IA | Spring Lake, NC | United States |
| White | 92.2% | 34.6% | 59.4% |
| Black | 1.2% | 34.1% | 12.2% |
| Asian | 0.0% | 2.5% | 5.6% |
| Native American | 0.0% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.4% | 0.2% |
| Other | 0.0% | 2.0% | 0.4% |
| Two or More Races | 2.3% | 8.3% | 3.2% |
| Hispanic | 4.1% | 17.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Boone, IA | Spring Lake, NC | United States |
| Married Population | 50.5% | 48.9% | 49.8% |
| Currently Married | 48.7% | 44.4% | 48.0% |
| Married but Separated | 1.9% | 4.5% | 1.8% |
| Single Population | 49.5% | 51.1% | 50.2% |
| Never Married | 29.5% | 38.8% | 33.8% |
| Divorced | 13.9% | 9.5% | 10.8% |
| Widowed | 6.1% | 2.8% | 5.6% |
| space5 | | | |
| Household Size | 2.46 | 2.51 | 2.60 |
| Households | 4,995 | 4,226 | 124,010,992 |
| Family Households | 3,074 | 2,629 | 80,755,759 |
| Married couple, w/children | 35.0% | 30.1% | 30.5% |
| Married couple, no children | 44.2% | 35.1% | 42.9% |
| Non Family Households | 1,921 | 1,597 | 43,255,233 |
| Single householder, w/children | 15.1% | 24.0% | 15.8% |
| Single householder, no children | 5.7% | 10.7% | 10.8% |