| | Loudonville, OH | Willard, OH | United States |
| Population | 2,719 | 6,204 | 329,725,481 |
| Female Population | 50.1% | 53.0% | 50.5% |
| Male Population | 49.9% | 47.0% | 49.5% |
| Median Age | 41 | 33.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,639 | 6,232 | 309,327,143 |
| Population - 2000 | 2,906 | 6,806 | 285,036,114 |
| Population - 1990 | 2,915 | 6,210 | 251,960,433 |
| Pop. 2000 to Now | -9.8% | -12.0% | 15.6% |
| Pop. 1990 to Now | -10.1% | -3.6% | 30.8% |
| space4 | | | |
| Population Density | 992.3 | 1,733.0 | 93.4 |
| Land Area | 2.7 | 3.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Loudonville, OH | Willard, OH | United States |
| Age 0 to 4 | 6.9% | 7.9% | 5.9% |
| Age 5 to 9 | 5.2% | 7.8% | 6.1% |
| Age 10 to 14 | 5.4% | 7.7% | 6.6% |
| Age 15 to 17 | 5.8% | 2.8% | 3.9% |
| Age 18 to 20 | 3.1% | 3.9% | 4.0% |
| Age 21 to 24 | 3.9% | 6.9% | 5.2% |
| Age 25 to 34 | 13.1% | 14.7% | 13.8% |
| Age 35 to 44 | 8.0% | 10.8% | 12.9% |
| Age 45 to 54 | 14.5% | 8.9% | 12.6% |
| Age 55 to 59 | 6.4% | 4.0% | 6.7% |
| Age 60 to 64 | 6.9% | 6.4% | 6.3% |
| Age 65 to 74 | 10.3% | 7.2% | 9.6% |
| Age 75 to 84 | 5.6% | 7.6% | 4.5% |
| Age 85 and over | 4.8% | 3.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Loudonville, OH | Willard, OH | United States |
| White | 93.7% | 74.8% | 59.4% |
| Black | 0.0% | 1.8% | 12.2% |
| Asian | 0.3% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.8% | 2.7% | 3.2% |
| Hispanic | 4.2% | 19.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Loudonville, OH | Willard, OH | United States |
| Married Population | 45.7% | 43.0% | 49.8% |
| Currently Married | 45.0% | 40.2% | 48.0% |
| Married but Separated | 0.8% | 2.8% | 1.8% |
| Single Population | 54.3% | 57.0% | 50.2% |
| Never Married | 30.7% | 34.2% | 33.8% |
| Divorced | 11.6% | 15.0% | 10.8% |
| Widowed | 11.9% | 7.8% | 5.6% |
| space5 | | | |
| Household Size | 2.33 | 2.54 | 2.60 |
| Households | 1,112 | 2,403 | 124,010,992 |
| Family Households | 691 | 1,486 | 80,755,759 |
| Married couple, w/children | 19.7% | 27.6% | 30.5% |
| Married couple, no children | 46.5% | 30.8% | 42.9% |
| Non Family Households | 421 | 917 | 43,255,233 |
| Single householder, w/children | 26.2% | 31.2% | 15.8% |
| Single householder, no children | 7.7% | 10.5% | 10.8% |