| | Lefors, TX | Clarendon, TX | United States |
| Population | 549 | 1,745 | 329,725,481 |
| Female Population | 54.7% | 51.1% | 50.5% |
| Male Population | 45.4% | 48.9% | 49.5% |
| Median Age | 31.8 | 27.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 496 | 2,080 | 309,327,143 |
| Population - 2000 | 559 | 1,974 | 285,036,114 |
| Population - 1990 | 656 | 2,067 | 251,960,433 |
| Pop. 2000 to Now | -15.0% | -9.4% | 15.6% |
| Pop. 1990 to Now | -27.6% | -13.5% | 30.8% |
| space4 | | | |
| Population Density | 1,407.7 | 601.3 | 93.4 |
| Land Area | 0.4 | 2.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lefors, TX | Clarendon, TX | United States |
| Age 0 to 4 | 11.1% | 4.5% | 5.9% |
| Age 5 to 9 | 11.3% | 5.0% | 6.1% |
| Age 10 to 14 | 6.7% | 11.3% | 6.6% |
| Age 15 to 17 | 2.6% | 4.2% | 3.9% |
| Age 18 to 20 | 7.7% | 14.8% | 4.0% |
| Age 21 to 24 | 0.0% | 5.9% | 5.2% |
| Age 25 to 34 | 14.8% | 8.5% | 13.8% |
| Age 35 to 44 | 10.4% | 12.0% | 12.9% |
| Age 45 to 54 | 5.8% | 6.6% | 12.6% |
| Age 55 to 59 | 11.1% | 2.9% | 6.7% |
| Age 60 to 64 | 5.3% | 5.1% | 6.3% |
| Age 65 to 74 | 8.4% | 13.9% | 9.6% |
| Age 75 to 84 | 3.3% | 4.5% | 4.5% |
| Age 85 and over | 1.6% | 0.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lefors, TX | Clarendon, TX | United States |
| White | 86.2% | 72.3% | 59.4% |
| Black | 0.0% | 12.6% | 12.2% |
| Asian | 2.4% | 0.3% | 5.6% |
| Native American | 0.2% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.4% | 3.4% | 3.2% |
| Hispanic | 6.9% | 11.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lefors, TX | Clarendon, TX | United States |
| Married Population | 55.5% | 39.8% | 49.8% |
| Currently Married | 53.7% | 35.5% | 48.0% |
| Married but Separated | 1.8% | 4.3% | 1.8% |
| Single Population | 44.5% | 60.2% | 50.2% |
| Never Married | 23.9% | 43.4% | 33.8% |
| Divorced | 15.9% | 10.3% | 10.8% |
| Widowed | 4.6% | 6.4% | 5.6% |
| space5 | | | |
| Household Size | 3.35 | 2.48 | 2.60 |
| Households | 164 | 607 | 124,010,992 |
| Family Households | 105 | 342 | 80,755,759 |
| Married couple, w/children | 26.7% | 25.4% | 30.5% |
| Married couple, no children | 48.6% | 44.2% | 42.9% |
| Non Family Households | 59 | 265 | 43,255,233 |
| Single householder, w/children | 16.2% | 21.1% | 15.8% |
| Single householder, no children | 8.6% | 9.4% | 10.8% |