| | Springfield, CO | Las Animas, CO | United States |
| Population | 1,318 | 2,564 | 329,725,481 |
| Female Population | 50.6% | 53.3% | 50.5% |
| Male Population | 49.4% | 46.7% | 49.5% |
| Median Age | 40.6 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,454 | 2,405 | 309,327,143 |
| Population - 2000 | 1,562 | 2,758 | 285,036,114 |
| Population - 1990 | 1,475 | 2,481 | 251,960,433 |
| Pop. 2000 to Now | -12.7% | -22.8% | 15.6% |
| Pop. 1990 to Now | -7.5% | -14.2% | 30.8% |
| space4 | | | |
| Population Density | 1,170.5 | 1,582.7 | 93.4 |
| Land Area | 1.1 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Springfield, CO | Las Animas, CO | United States |
| Age 0 to 4 | 6.1% | 5.9% | 5.9% |
| Age 5 to 9 | 7.7% | 9.9% | 6.1% |
| Age 10 to 14 | 4.3% | 4.6% | 6.6% |
| Age 15 to 17 | 4.0% | 2.5% | 3.9% |
| Age 18 to 20 | 2.8% | 3.2% | 4.0% |
| Age 21 to 24 | 3.4% | 2.7% | 5.2% |
| Age 25 to 34 | 12.7% | 15.1% | 13.8% |
| Age 35 to 44 | 14.0% | 10.5% | 12.9% |
| Age 45 to 54 | 10.2% | 8.2% | 12.6% |
| Age 55 to 59 | 5.8% | 6.4% | 6.7% |
| Age 60 to 64 | 5.4% | 6.1% | 6.3% |
| Age 65 to 74 | 11.1% | 13.9% | 9.6% |
| Age 75 to 84 | 6.9% | 6.2% | 4.5% |
| Age 85 and over | 5.6% | 4.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Springfield, CO | Las Animas, CO | United States |
| White | 80.3% | 43.2% | 59.4% |
| Black | 1.5% | 0.0% | 12.2% |
| Asian | 3.8% | 1.9% | 5.6% |
| Native American | 0.7% | 2.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.1% | 8.0% | 3.2% |
| Hispanic | 12.6% | 44.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Springfield, CO | Las Animas, CO | United States |
| Married Population | 51.4% | 43.5% | 49.8% |
| Currently Married | 47.7% | 42.7% | 48.0% |
| Married but Separated | 3.7% | 0.8% | 1.8% |
| Single Population | 48.6% | 56.5% | 50.2% |
| Never Married | 26.1% | 26.8% | 33.8% |
| Divorced | 10.9% | 18.1% | 10.8% |
| Widowed | 11.5% | 11.6% | 5.6% |
| space5 | | | |
| Household Size | 2.03 | 2.25 | 2.60 |
| Households | 620 | 1,104 | 124,010,992 |
| Family Households | 317 | 620 | 80,755,759 |
| Married couple, w/children | 35.6% | 36.9% | 30.5% |
| Married couple, no children | 37.5% | 28.7% | 42.9% |
| Non Family Households | 303 | 484 | 43,255,233 |
| Single householder, w/children | 15.5% | 22.7% | 15.8% |
| Single householder, no children | 11.4% | 11.6% | 10.8% |