| | Pilot Grove, MO | Otterville, MO | United States |
| Population | 687 | 370 | 329,725,481 |
| Female Population | 55.8% | 58.1% | 50.5% |
| Male Population | 44.3% | 41.9% | 49.5% |
| Median Age | 42.8 | 44.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 769 | 458 | 309,327,143 |
| Population - 2000 | 723 | 476 | 285,036,114 |
| Population - 1990 | 714 | 507 | 251,960,433 |
| Pop. 2000 to Now | 5.3% | -4.8% | 15.6% |
| Pop. 1990 to Now | 6.6% | -10.7% | 30.8% |
| space4 | | | |
| Population Density | 1,631.8 | 756.7 | 93.4 |
| Land Area | 0.4 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Pilot Grove, MO | Otterville, MO | United States |
| Age 0 to 4 | 4.7% | 3.5% | 5.9% |
| Age 5 to 9 | 5.7% | 5.4% | 6.1% |
| Age 10 to 14 | 6.3% | 7.3% | 6.6% |
| Age 15 to 17 | 4.1% | 8.1% | 3.9% |
| Age 18 to 20 | 1.5% | 3.0% | 4.0% |
| Age 21 to 24 | 2.6% | 3.5% | 5.2% |
| Age 25 to 34 | 10.3% | 10.8% | 13.8% |
| Age 35 to 44 | 16.6% | 9.7% | 12.9% |
| Age 45 to 54 | 9.3% | 11.1% | 12.6% |
| Age 55 to 59 | 4.5% | 5.4% | 6.7% |
| Age 60 to 64 | 7.1% | 7.0% | 6.3% |
| Age 65 to 74 | 11.6% | 14.1% | 9.6% |
| Age 75 to 84 | 7.7% | 10.3% | 4.5% |
| Age 85 and over | 8.0% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Pilot Grove, MO | Otterville, MO | United States |
| White | 99.7% | 97.3% | 59.4% |
| Black | 0.3% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 2.2% | 3.2% |
| Hispanic | 0.0% | 0.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Pilot Grove, MO | Otterville, MO | United States |
| Married Population | 40.0% | 44.5% | 49.8% |
| Currently Married | 39.4% | 41.6% | 48.0% |
| Married but Separated | 0.5% | 2.9% | 1.8% |
| Single Population | 60.0% | 55.5% | 50.2% |
| Never Married | 24.1% | 30.6% | 33.8% |
| Divorced | 18.2% | 16.8% | 10.8% |
| Widowed | 17.8% | 8.1% | 5.6% |
| space5 | | | |
| Household Size | 2.16 | 2.24 | 2.60 |
| Households | 295 | 165 | 124,010,992 |
| Family Households | 159 | 84 | 80,755,759 |
| Married couple, w/children | 27.7% | 27.4% | 30.5% |
| Married couple, no children | 40.3% | 44.0% | 42.9% |
| Non Family Households | 136 | 81 | 43,255,233 |
| Single householder, w/children | 23.3% | 22.6% | 15.8% |
| Single householder, no children | 8.8% | 6.0% | 10.8% |