| | Spur, TX | Mount Airy, MD | United States |
| Population | 738 | 9,621 | 329,725,481 |
| Female Population | 46.1% | 51.7% | 50.5% |
| Male Population | 53.9% | 48.4% | 49.5% |
| Median Age | 43.2 | 38.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,325 | 9,300 | 309,327,143 |
| Population - 2000 | 1,088 | 6,425 | 285,036,114 |
| Population - 1990 | 1,300 | 3,730 | 251,960,433 |
| Pop. 2000 to Now | 7.3% | 47.9% | 15.6% |
| Pop. 1990 to Now | -10.2% | 154.8% | 30.8% |
| space4 | | | |
| Population Density | 460.4 | 2,336.3 | 93.4 |
| Land Area | 1.6 | 4.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Spur, TX | Mount Airy, MD | United States |
| Age 0 to 4 | 9.2% | 7.1% | 5.9% |
| Age 5 to 9 | 4.2% | 8.9% | 6.1% |
| Age 10 to 14 | 5.0% | 5.6% | 6.6% |
| Age 15 to 17 | 2.8% | 5.2% | 3.9% |
| Age 18 to 20 | 3.9% | 2.6% | 4.0% |
| Age 21 to 24 | 4.1% | 4.2% | 5.2% |
| Age 25 to 34 | 12.2% | 11.3% | 13.8% |
| Age 35 to 44 | 15.9% | 14.0% | 12.9% |
| Age 45 to 54 | 11.2% | 16.2% | 12.6% |
| Age 55 to 59 | 4.9% | 6.9% | 6.7% |
| Age 60 to 64 | 9.1% | 5.8% | 6.3% |
| Age 65 to 74 | 6.9% | 5.8% | 9.6% |
| Age 75 to 84 | 8.7% | 5.0% | 4.5% |
| Age 85 and over | 1.9% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Spur, TX | Mount Airy, MD | United States |
| White | 49.7% | 82.6% | 59.4% |
| Black | 2.2% | 3.4% | 12.2% |
| Asian | 0.9% | 1.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.0% | 4.4% | 3.2% |
| Hispanic | 47.2% | 7.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Spur, TX | Mount Airy, MD | United States |
| Married Population | 49.3% | 65.1% | 49.8% |
| Currently Married | 42.4% | 64.1% | 48.0% |
| Married but Separated | 7.0% | 1.0% | 1.8% |
| Single Population | 50.7% | 34.9% | 50.2% |
| Never Married | 21.1% | 23.9% | 33.8% |
| Divorced | 18.6% | 5.9% | 10.8% |
| Widowed | 11.0% | 5.1% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.95 | 2.60 |
| Households | 284 | 3,237 | 124,010,992 |
| Family Households | 142 | 2,586 | 80,755,759 |
| Married couple, w/children | 25.4% | 44.0% | 30.5% |
| Married couple, no children | 40.8% | 45.2% | 42.9% |
| Non Family Households | 142 | 651 | 43,255,233 |
| Single householder, w/children | 25.4% | 7.2% | 15.8% |
| Single householder, no children | 8.5% | 3.6% | 10.8% |