| | La Plata, NM | Kirtland, NM | United States |
| Population | 1,935 | 644 | 329,725,481 |
| Female Population | 46.5% | 48.8% | 50.5% |
| Male Population | 53.5% | 51.2% | 49.5% |
| Median Age | 47.1 | 34 | 38.4 |
| space3 | | | |
| Population - 2010 | 557 | 647 | 309,327,143 |
| Population - 2000 | 519 | 6,190 | 285,036,114 |
| Population - 1990 | 298 | 3,552 | 251,960,433 |
| Pop. 2000 to Now | -16.4% | -90.3% | 15.6% |
| Pop. 1990 to Now | 45.6% | -83.2% | 30.8% |
| space4 | | | |
| Population Density | 190.6 | 374.4 | 93.4 |
| Land Area | 10.2 | 1.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | La Plata, NM | Kirtland, NM | United States |
| Age 0 to 4 | 4.3% | 4.3% | 5.9% |
| Age 5 to 9 | 5.1% | 4.8% | 6.1% |
| Age 10 to 14 | 6.4% | 18.9% | 6.6% |
| Age 15 to 17 | 5.6% | 5.1% | 3.9% |
| Age 18 to 20 | 2.7% | 3.3% | 4.0% |
| Age 21 to 24 | 1.7% | 0.3% | 5.2% |
| Age 25 to 34 | 9.3% | 13.4% | 13.8% |
| Age 35 to 44 | 12.7% | 17.4% | 12.9% |
| Age 45 to 54 | 11.9% | 6.5% | 12.6% |
| Age 55 to 59 | 12.6% | 5.4% | 6.7% |
| Age 60 to 64 | 4.3% | 9.0% | 6.3% |
| Age 65 to 74 | 16.1% | 8.7% | 9.6% |
| Age 75 to 84 | 4.2% | 2.3% | 4.5% |
| Age 85 and over | 3.3% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | La Plata, NM | Kirtland, NM | United States |
| White | 62.0% | 58.4% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 0.3% | 2.5% | 5.6% |
| Native American | 13.2% | 25.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 5.9% | 0.5% | 3.2% |
| Hispanic | 18.0% | 13.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | La Plata, NM | Kirtland, NM | United States |
| Married Population | 50.8% | 63.9% | 49.8% |
| Currently Married | 50.6% | 63.9% | 48.0% |
| Married but Separated | 0.2% | 0.0% | 1.8% |
| Single Population | 49.2% | 36.1% | 50.2% |
| Never Married | 33.9% | 20.5% | 33.8% |
| Divorced | 9.9% | 14.7% | 10.8% |
| Widowed | 5.5% | 0.9% | 5.6% |
| space5 | | | |
| Household Size | 2.64 | 3.16 | 2.60 |
| Households | 733 | 204 | 124,010,992 |
| Family Households | 560 | 161 | 80,755,759 |
| Married couple, w/children | 20.2% | 40.4% | 30.5% |
| Married couple, no children | 55.4% | 52.2% | 42.9% |
| Non Family Households | 173 | 43 | 43,255,233 |
| Single householder, w/children | 15.5% | 6.8% | 15.8% |
| Single householder, no children | 8.9% | 0.6% | 10.8% |