| | Millersburg, IN | New Paris, IN | United States |
| Population | 777 | 1,434 | 329,725,481 |
| Female Population | 49.2% | 51.3% | 50.5% |
| Male Population | 50.8% | 48.8% | 49.5% |
| Median Age | 28.2 | 29.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 902 | 1,311 | 309,327,143 |
| Population - 2000 | 868 | 1,006 | 285,036,114 |
| Population - 1990 | 854 | 1,007 | 251,960,433 |
| Pop. 2000 to Now | 9.5% | 47.0% | 15.6% |
| Pop. 1990 to Now | 11.2% | 46.9% | 30.8% |
| space4 | | | |
| Population Density | 1,202.8 | 1,075.8 | 93.4 |
| Land Area | 0.6 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Millersburg, IN | New Paris, IN | United States |
| Age 0 to 4 | 11.2% | 9.5% | 5.9% |
| Age 5 to 9 | 9.4% | 9.1% | 6.1% |
| Age 10 to 14 | 11.7% | 6.6% | 6.6% |
| Age 15 to 17 | 3.5% | 3.9% | 3.9% |
| Age 18 to 20 | 2.3% | 0.9% | 4.0% |
| Age 21 to 24 | 8.1% | 3.3% | 5.2% |
| Age 25 to 34 | 18.8% | 20.5% | 13.8% |
| Age 35 to 44 | 12.1% | 5.6% | 12.9% |
| Age 45 to 54 | 10.9% | 13.5% | 12.6% |
| Age 55 to 59 | 3.1% | 5.6% | 6.7% |
| Age 60 to 64 | 2.4% | 7.3% | 6.3% |
| Age 65 to 74 | 4.5% | 8.0% | 9.6% |
| Age 75 to 84 | 0.8% | 5.0% | 4.5% |
| Age 85 and over | 1.2% | 1.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Millersburg, IN | New Paris, IN | United States |
| White | 82.0% | 88.8% | 59.4% |
| Black | 0.3% | 0.0% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.2% | 0.0% | 3.2% |
| Hispanic | 16.3% | 10.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Millersburg, IN | New Paris, IN | United States |
| Married Population | 56.5% | 64.4% | 49.8% |
| Currently Married | 52.9% | 62.3% | 48.0% |
| Married but Separated | 3.6% | 2.1% | 1.8% |
| Single Population | 43.5% | 35.6% | 50.2% |
| Never Married | 33.7% | 19.9% | 33.8% |
| Divorced | 7.0% | 10.3% | 10.8% |
| Widowed | 2.9% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 3.12 | 2.87 | 2.60 |
| Households | 249 | 497 | 124,010,992 |
| Family Households | 167 | 429 | 80,755,759 |
| Married couple, w/children | 40.7% | 30.3% | 30.5% |
| Married couple, no children | 37.7% | 49.7% | 42.9% |
| Non Family Households | 82 | 68 | 43,255,233 |
| Single householder, w/children | 16.8% | 12.1% | 15.8% |
| Single householder, no children | 4.8% | 7.9% | 10.8% |