| | Indiahoma, OK | Geronimo, OK | United States |
| Population | 287 | 1,142 | 329,725,481 |
| Female Population | 53.7% | 47.3% | 50.5% |
| Male Population | 46.3% | 52.7% | 49.5% |
| Median Age | 35.7 | 31.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 348 | 1,279 | 309,327,143 |
| Population - 2000 | 374 | 959 | 285,036,114 |
| Population - 1990 | 337 | 990 | 251,960,433 |
| Pop. 2000 to Now | -12.3% | 27.7% | 15.6% |
| Pop. 1990 to Now | -2.7% | 23.7% | 30.8% |
| space4 | | | |
| Population Density | 1,021.4 | 752.3 | 93.4 |
| Land Area | 0.3 | 1.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Indiahoma, OK | Geronimo, OK | United States |
| Age 0 to 4 | 7.0% | 8.8% | 5.9% |
| Age 5 to 9 | 5.6% | 5.1% | 6.1% |
| Age 10 to 14 | 3.1% | 5.3% | 6.6% |
| Age 15 to 17 | 4.5% | 3.2% | 3.9% |
| Age 18 to 20 | 4.9% | 4.0% | 4.0% |
| Age 21 to 24 | 7.3% | 6.7% | 5.2% |
| Age 25 to 34 | 15.7% | 21.7% | 13.8% |
| Age 35 to 44 | 10.8% | 10.5% | 12.9% |
| Age 45 to 54 | 9.4% | 13.3% | 12.6% |
| Age 55 to 59 | 12.5% | 4.4% | 6.7% |
| Age 60 to 64 | 5.2% | 4.6% | 6.3% |
| Age 65 to 74 | 9.8% | 6.6% | 9.6% |
| Age 75 to 84 | 2.1% | 4.2% | 4.5% |
| Age 85 and over | 2.1% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Indiahoma, OK | Geronimo, OK | United States |
| White | 79.1% | 67.3% | 59.4% |
| Black | 0.0% | 4.2% | 12.2% |
| Asian | 0.0% | 1.0% | 5.6% |
| Native American | 9.8% | 3.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.8% | 0.4% |
| Two or More Races | 4.5% | 8.7% | 3.2% |
| Hispanic | 6.6% | 14.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Indiahoma, OK | Geronimo, OK | United States |
| Married Population | 39.3% | 51.0% | 49.8% |
| Currently Married | 31.8% | 50.5% | 48.0% |
| Married but Separated | 7.4% | 0.4% | 1.8% |
| Single Population | 60.7% | 49.0% | 50.2% |
| Never Married | 20.2% | 30.2% | 33.8% |
| Divorced | 32.6% | 12.4% | 10.8% |
| Widowed | 7.9% | 6.4% | 5.6% |
| space5 | | | |
| Household Size | 2.73 | 2.41 | 2.60 |
| Households | 105 | 473 | 124,010,992 |
| Family Households | 75 | 301 | 80,755,759 |
| Married couple, w/children | 25.3% | 37.5% | 30.5% |
| Married couple, no children | 21.3% | 42.2% | 42.9% |
| Non Family Households | 30 | 172 | 43,255,233 |
| Single householder, w/children | 18.7% | 15.6% | 15.8% |
| Single householder, no children | 34.7% | 4.7% | 10.8% |