| | Greenfield, MO | Rogers, AR | United States |
| Population | 1,318 | 68,340 | 329,725,481 |
| Female Population | 55.3% | 51.3% | 50.5% |
| Male Population | 44.7% | 48.7% | 49.5% |
| Median Age | 43.4 | 32.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,367 | 56,358 | 309,327,143 |
| Population - 2000 | 1,358 | 38,829 | 285,036,114 |
| Population - 1990 | 1,416 | 24,692 | 251,960,433 |
| Pop. 2000 to Now | -3.2% | 81.6% | 15.6% |
| Pop. 1990 to Now | -7.1% | 185.6% | 30.8% |
| space4 | | | |
| Population Density | 1,160.2 | 1,791.2 | 93.4 |
| Land Area | 1.1 | 38.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Greenfield, MO | Rogers, AR | United States |
| Age 0 to 4 | 7.5% | 7.1% | 5.9% |
| Age 5 to 9 | 5.8% | 7.9% | 6.1% |
| Age 10 to 14 | 7.1% | 7.6% | 6.6% |
| Age 15 to 17 | 4.8% | 4.3% | 3.9% |
| Age 18 to 20 | 2.4% | 4.2% | 4.0% |
| Age 21 to 24 | 2.9% | 5.5% | 5.2% |
| Age 25 to 34 | 9.3% | 16.3% | 13.8% |
| Age 35 to 44 | 13.6% | 13.9% | 12.9% |
| Age 45 to 54 | 8.0% | 14.1% | 12.6% |
| Age 55 to 59 | 8.2% | 5.3% | 6.7% |
| Age 60 to 64 | 5.3% | 4.2% | 6.3% |
| Age 65 to 74 | 13.7% | 5.4% | 9.6% |
| Age 75 to 84 | 7.7% | 2.8% | 4.5% |
| Age 85 and over | 3.8% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Greenfield, MO | Rogers, AR | United States |
| White | 84.3% | 54.6% | 59.4% |
| Black | 1.7% | 1.6% | 12.2% |
| Asian | 0.0% | 2.6% | 5.6% |
| Native American | 1.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 1.1% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 2.3% | 5.2% | 3.2% |
| Hispanic | 10.7% | 34.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Greenfield, MO | Rogers, AR | United States |
| Married Population | 44.8% | 54.1% | 49.8% |
| Currently Married | 39.3% | 52.9% | 48.0% |
| Married but Separated | 5.5% | 1.1% | 1.8% |
| Single Population | 55.2% | 45.9% | 50.2% |
| Never Married | 22.8% | 32.8% | 33.8% |
| Divorced | 20.9% | 9.2% | 10.8% |
| Widowed | 11.5% | 3.9% | 5.6% |
| space5 | | | |
| Household Size | 2.23 | 2.80 | 2.60 |
| Households | 562 | 24,233 | 124,010,992 |
| Family Households | 279 | 17,485 | 80,755,759 |
| Married couple, w/children | 30.8% | 39.6% | 30.5% |
| Married couple, no children | 38.4% | 35.1% | 42.9% |
| Non Family Households | 283 | 6,748 | 43,255,233 |
| Single householder, w/children | 21.9% | 16.2% | 15.8% |
| Single householder, no children | 9.0% | 9.1% | 10.8% |