| | Zap, ND | Hazen, ND | United States |
| Population | 113 | 2,564 | 329,725,481 |
| Female Population | 50.4% | 48.4% | 50.5% |
| Male Population | 49.6% | 51.6% | 49.5% |
| Median Age | 49.5 | 42.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 227 | 2,440 | 309,327,143 |
| Population - 2000 | 231 | 2,457 | 285,036,114 |
| Population - 1990 | 287 | 2,818 | 251,960,433 |
| Pop. 2000 to Now | -6.5% | -5.1% | 15.6% |
| Pop. 1990 to Now | -24.7% | -17.3% | 30.8% |
| space4 | | | |
| Population Density | 111.0 | 1,932.2 | 93.4 |
| Land Area | 1.0 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Zap, ND | Hazen, ND | United States |
| Age 0 to 4 | 7.1% | 7.5% | 5.9% |
| Age 5 to 9 | 8.9% | 7.9% | 6.1% |
| Age 10 to 14 | 3.5% | 7.7% | 6.6% |
| Age 15 to 17 | 1.8% | 2.4% | 3.9% |
| Age 18 to 20 | 0.9% | 1.4% | 4.0% |
| Age 21 to 24 | 1.8% | 3.2% | 5.2% |
| Age 25 to 34 | 12.4% | 11.3% | 13.8% |
| Age 35 to 44 | 6.2% | 12.4% | 12.9% |
| Age 45 to 54 | 12.4% | 13.8% | 12.6% |
| Age 55 to 59 | 15.0% | 6.1% | 6.7% |
| Age 60 to 64 | 15.9% | 7.6% | 6.3% |
| Age 65 to 74 | 0.9% | 10.6% | 9.6% |
| Age 75 to 84 | 13.3% | 7.5% | 4.5% |
| Age 85 and over | 0.0% | 0.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Zap, ND | Hazen, ND | United States |
| White | 93.8% | 82.3% | 59.4% |
| Black | 0.0% | 0.6% | 12.2% |
| Asian | 0.0% | 1.7% | 5.6% |
| Native American | 3.5% | 2.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 4.3% | 0.4% |
| Two or More Races | 2.7% | 0.2% | 3.2% |
| Hispanic | 0.0% | 8.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Zap, ND | Hazen, ND | United States |
| Married Population | 56.0% | 64.4% | 49.8% |
| Currently Married | 56.0% | 63.3% | 48.0% |
| Married but Separated | 0.0% | 1.1% | 1.8% |
| Single Population | 44.0% | 35.6% | 50.2% |
| Never Married | 20.9% | 16.7% | 33.8% |
| Divorced | 20.9% | 11.3% | 10.8% |
| Widowed | 2.2% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.22 | 2.38 | 2.60 |
| Households | 51 | 1,060 | 124,010,992 |
| Family Households | 26 | 731 | 80,755,759 |
| Married couple, w/children | 19.2% | 25.9% | 30.5% |
| Married couple, no children | 69.2% | 62.5% | 42.9% |
| Non Family Households | 25 | 329 | 43,255,233 |
| Single householder, w/children | 11.5% | 8.2% | 15.8% |
| Single householder, no children | 0.0% | 3.4% | 10.8% |