| | Calvin, OK | Grove, OK | United States |
| Population | 401 | 6,900 | 329,725,481 |
| Female Population | 46.9% | 49.6% | 50.5% |
| Male Population | 53.1% | 50.4% | 49.5% |
| Median Age | 24.1 | 47 | 38.4 |
| space3 | | | |
| Population - 2010 | 298 | 6,629 | 309,327,143 |
| Population - 2000 | 279 | 5,131 | 285,036,114 |
| Population - 1990 | 251 | 4,020 | 251,960,433 |
| Pop. 2000 to Now | -3.2% | 40.0% | 15.6% |
| Pop. 1990 to Now | 7.6% | 78.7% | 30.8% |
| space4 | | | |
| Population Density | 825.1 | 743.1 | 93.4 |
| Land Area | 0.5 | 9.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Calvin, OK | Grove, OK | United States |
| Age 0 to 4 | 12.7% | 4.5% | 5.9% |
| Age 5 to 9 | 16.5% | 6.8% | 6.1% |
| Age 10 to 14 | 12.0% | 6.7% | 6.6% |
| Age 15 to 17 | 5.0% | 2.7% | 3.9% |
| Age 18 to 20 | 2.2% | 2.7% | 4.0% |
| Age 21 to 24 | 2.7% | 3.5% | 5.2% |
| Age 25 to 34 | 6.7% | 12.4% | 13.8% |
| Age 35 to 44 | 7.5% | 8.7% | 12.9% |
| Age 45 to 54 | 10.5% | 10.9% | 12.6% |
| Age 55 to 59 | 9.0% | 8.8% | 6.7% |
| Age 60 to 64 | 3.0% | 7.4% | 6.3% |
| Age 65 to 74 | 5.5% | 13.6% | 9.6% |
| Age 75 to 84 | 5.5% | 8.2% | 4.5% |
| Age 85 and over | 1.2% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Calvin, OK | Grove, OK | United States |
| White | 62.6% | 72.6% | 59.4% |
| Black | 0.0% | 0.3% | 12.2% |
| Asian | 0.0% | 0.3% | 5.6% |
| Native American | 23.4% | 11.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 8.7% | 3.2% |
| Hispanic | 14.0% | 6.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Calvin, OK | Grove, OK | United States |
| Married Population | 47.9% | 54.9% | 49.8% |
| Currently Married | 45.3% | 52.6% | 48.0% |
| Married but Separated | 2.5% | 2.3% | 1.8% |
| Single Population | 52.1% | 45.1% | 50.2% |
| Never Married | 16.9% | 23.0% | 33.8% |
| Divorced | 16.5% | 12.2% | 10.8% |
| Widowed | 18.6% | 10.0% | 5.6% |
| space5 | | | |
| Household Size | 3.58 | 2.38 | 2.60 |
| Households | 112 | 2,849 | 124,010,992 |
| Family Households | 72 | 1,836 | 80,755,759 |
| Married couple, w/children | 38.9% | 22.9% | 30.5% |
| Married couple, no children | 29.2% | 52.9% | 42.9% |
| Non Family Households | 40 | 1,013 | 43,255,233 |
| Single householder, w/children | 20.8% | 10.9% | 15.8% |
| Single householder, no children | 11.1% | 13.2% | 10.8% |