| | Elmo, TX | Hawk Cove, TX | United States |
| Population | 1,065 | 530 | 329,725,481 |
| Female Population | 60.9% | 53.8% | 50.5% |
| Male Population | 39.1% | 46.2% | 49.5% |
| Median Age | 50.6 | 40.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 635 | 489 | 309,327,143 |
| Population - 2000 | 609 | 457 | 285,036,114 |
| Population - 1990 | 524 | 448 | 251,960,433 |
| Pop. 2000 to Now | 170.3% | 23.0% | 15.6% |
| Pop. 1990 to Now | 214.1% | 25.5% | 30.8% |
| space4 | | | |
| Population Density | 259.0 | 1,440.2 | 93.4 |
| Land Area | 4.1 | 0.4 | 3,531,905.4 |
| Water Area | 0.4 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Elmo, TX | Hawk Cove, TX | United States |
| Age 0 to 4 | 3.0% | 6.2% | 5.9% |
| Age 5 to 9 | 0.0% | 1.9% | 6.1% |
| Age 10 to 14 | 0.0% | 6.2% | 6.6% |
| Age 15 to 17 | 0.0% | 2.5% | 3.9% |
| Age 18 to 20 | 0.0% | 2.6% | 4.0% |
| Age 21 to 24 | 5.4% | 9.8% | 5.2% |
| Age 25 to 34 | 6.1% | 17.0% | 13.8% |
| Age 35 to 44 | 7.9% | 6.8% | 12.9% |
| Age 45 to 54 | 38.5% | 19.1% | 12.6% |
| Age 55 to 59 | 7.3% | 3.6% | 6.7% |
| Age 60 to 64 | 10.3% | 11.5% | 6.3% |
| Age 65 to 74 | 15.0% | 7.5% | 9.6% |
| Age 75 to 84 | 3.9% | 3.4% | 4.5% |
| Age 85 and over | 2.6% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Elmo, TX | Hawk Cove, TX | United States |
| White | 95.4% | 57.2% | 59.4% |
| Black | 4.6% | 1.3% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 1.9% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 0.0% | 3.2% | 3.2% |
| Hispanic | 0.0% | 36.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Elmo, TX | Hawk Cove, TX | United States |
| Married Population | 48.6% | 40.3% | 49.8% |
| Currently Married | 48.6% | 38.8% | 48.0% |
| Married but Separated | 0.0% | 1.5% | 1.8% |
| Single Population | 51.4% | 59.7% | 50.2% |
| Never Married | 8.9% | 36.3% | 33.8% |
| Divorced | 39.0% | 18.1% | 10.8% |
| Widowed | 3.5% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 2.01 | 3.03 | 2.60 |
| Households | 529 | 175 | 124,010,992 |
| Family Households | 252 | 94 | 80,755,759 |
| Married couple, w/children | 19.0% | 28.7% | 30.5% |
| Married couple, no children | 70.6% | 28.7% | 42.9% |
| Non Family Households | 277 | 81 | 43,255,233 |
| Single householder, w/children | 0.0% | 26.6% | 15.8% |
| Single householder, no children | 10.3% | 16.0% | 10.8% |