| | Grifton, NC | Lockhart, FL | United States |
| Population | 2,764 | 14,390 | 329,725,481 |
| Female Population | 52.6% | 49.4% | 50.5% |
| Male Population | 47.4% | 50.6% | 49.5% |
| Median Age | 42 | 36.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,629 | 12,764 | 309,327,143 |
| Population - 2000 | 2,073 | 12,944 | 285,036,114 |
| Population - 1990 | 2,393 | 11,636 | 251,960,433 |
| Pop. 2000 to Now | 30.7% | 17.8% | 15.6% |
| Pop. 1990 to Now | 13.2% | 31.1% | 30.8% |
| space4 | | | |
| Population Density | 1,344.4 | 3,240.3 | 93.4 |
| Land Area | 2.1 | 4.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Grifton, NC | Lockhart, FL | United States |
| Age 0 to 4 | 5.2% | 7.8% | 5.9% |
| Age 5 to 9 | 4.6% | 4.9% | 6.1% |
| Age 10 to 14 | 4.0% | 3.7% | 6.6% |
| Age 15 to 17 | 5.3% | 2.7% | 3.9% |
| Age 18 to 20 | 1.7% | 1.7% | 4.0% |
| Age 21 to 24 | 13.5% | 6.2% | 5.2% |
| Age 25 to 34 | 8.6% | 20.6% | 13.8% |
| Age 35 to 44 | 9.6% | 13.7% | 12.9% |
| Age 45 to 54 | 16.5% | 15.4% | 12.6% |
| Age 55 to 59 | 8.1% | 6.4% | 6.7% |
| Age 60 to 64 | 6.6% | 5.1% | 6.3% |
| Age 65 to 74 | 6.2% | 9.3% | 9.6% |
| Age 75 to 84 | 8.1% | 1.8% | 4.5% |
| Age 85 and over | 1.9% | 0.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Grifton, NC | Lockhart, FL | United States |
| White | 39.7% | 37.5% | 59.4% |
| Black | 51.5% | 17.1% | 12.2% |
| Asian | 0.0% | 6.2% | 5.6% |
| Native American | 0.3% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 0.1% | 3.5% | 3.2% |
| Hispanic | 8.3% | 35.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Grifton, NC | Lockhart, FL | United States |
| Married Population | 41.5% | 43.6% | 49.8% |
| Currently Married | 33.9% | 41.7% | 48.0% |
| Married but Separated | 7.6% | 1.8% | 1.8% |
| Single Population | 58.5% | 56.4% | 50.2% |
| Never Married | 40.6% | 38.4% | 33.8% |
| Divorced | 10.9% | 15.9% | 10.8% |
| Widowed | 7.0% | 2.2% | 5.6% |
| space5 | | | |
| Household Size | 2.10 | 2.71 | 2.60 |
| Households | 1,313 | 5,310 | 124,010,992 |
| Family Households | 800 | 3,356 | 80,755,759 |
| Married couple, w/children | 11.1% | 21.1% | 30.5% |
| Married couple, no children | 36.5% | 45.2% | 42.9% |
| Non Family Households | 513 | 1,954 | 43,255,233 |
| Single householder, w/children | 40.0% | 22.8% | 15.8% |
| Single householder, no children | 12.4% | 10.9% | 10.8% |