| | Northwood, ND | Covington, GA | United States |
| Population | 844 | 14,065 | 329,725,481 |
| Female Population | 47.0% | 52.4% | 50.5% |
| Male Population | 53.0% | 47.6% | 49.5% |
| Median Age | 45.9 | 35.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 938 | 13,138 | 309,327,143 |
| Population - 2000 | 959 | 11,547 | 285,036,114 |
| Population - 1990 | 1,166 | 10,026 | 251,960,433 |
| Pop. 2000 to Now | -7.8% | 24.6% | 15.6% |
| Pop. 1990 to Now | -24.2% | 43.5% | 30.8% |
| space4 | | | |
| Population Density | 698.1 | 893.4 | 93.4 |
| Land Area | 1.2 | 15.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Northwood, ND | Covington, GA | United States |
| Age 0 to 4 | 10.4% | 6.0% | 5.9% |
| Age 5 to 9 | 8.5% | 5.2% | 6.1% |
| Age 10 to 14 | 4.9% | 8.4% | 6.6% |
| Age 15 to 17 | 3.7% | 3.5% | 3.9% |
| Age 18 to 20 | 0.1% | 3.9% | 4.0% |
| Age 21 to 24 | 4.9% | 6.8% | 5.2% |
| Age 25 to 34 | 11.5% | 15.9% | 13.8% |
| Age 35 to 44 | 4.6% | 11.9% | 12.9% |
| Age 45 to 54 | 10.3% | 15.2% | 12.6% |
| Age 55 to 59 | 5.8% | 3.0% | 6.7% |
| Age 60 to 64 | 4.0% | 4.5% | 6.3% |
| Age 65 to 74 | 15.3% | 9.2% | 9.6% |
| Age 75 to 84 | 9.1% | 4.1% | 4.5% |
| Age 85 and over | 6.9% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Northwood, ND | Covington, GA | United States |
| White | 97.6% | 43.8% | 59.4% |
| Black | 0.0% | 46.7% | 12.2% |
| Asian | 0.0% | 0.5% | 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 | 1.5% | 2.3% | 3.2% |
| Hispanic | 0.8% | 6.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Northwood, ND | Covington, GA | United States |
| Married Population | 49.1% | 38.3% | 49.8% |
| Currently Married | 47.9% | 36.7% | 48.0% |
| Married but Separated | 1.2% | 1.6% | 1.8% |
| Single Population | 50.9% | 61.7% | 50.2% |
| Never Married | 23.5% | 41.7% | 33.8% |
| Divorced | 16.8% | 13.8% | 10.8% |
| Widowed | 10.6% | 6.2% | 5.6% |
| space5 | | | |
| Household Size | 2.46 | 2.40 | 2.60 |
| Households | 326 | 5,557 | 124,010,992 |
| Family Households | 218 | 3,776 | 80,755,759 |
| Married couple, w/children | 18.3% | 21.7% | 30.5% |
| Married couple, no children | 48.2% | 26.1% | 42.9% |
| Non Family Households | 108 | 1,781 | 43,255,233 |
| Single householder, w/children | 30.3% | 36.7% | 15.8% |
| Single householder, no children | 3.2% | 15.5% | 10.8% |