| | Horace, ND | Milan, IN | United States |
| Population | 3,141 | 1,955 | 329,725,481 |
| Female Population | 49.6% | 54.4% | 50.5% |
| Male Population | 50.4% | 45.6% | 49.5% |
| Median Age | 35.8 | 41.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,437 | 1,871 | 309,327,143 |
| Population - 2000 | 915 | 1,816 | 285,036,114 |
| Population - 1990 | 662 | 1,529 | 251,960,433 |
| Pop. 2000 to Now | 241.9% | 0.9% | 15.6% |
| Pop. 1990 to Now | 372.5% | 19.9% | 30.8% |
| space4 | | | |
| Population Density | 271.2 | 976.5 | 93.4 |
| Land Area | 11.6 | 2.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Horace, ND | Milan, IN | United States |
| Age 0 to 4 | 9.7% | 3.6% | 5.9% |
| Age 5 to 9 | 9.7% | 4.6% | 6.1% |
| Age 10 to 14 | 12.0% | 12.2% | 6.6% |
| Age 15 to 17 | 3.2% | 5.0% | 3.9% |
| Age 18 to 20 | 2.0% | 2.6% | 4.0% |
| Age 21 to 24 | 3.7% | 3.8% | 5.2% |
| Age 25 to 34 | 8.4% | 11.4% | 13.8% |
| Age 35 to 44 | 18.2% | 11.8% | 12.9% |
| Age 45 to 54 | 17.3% | 12.5% | 12.6% |
| Age 55 to 59 | 4.8% | 6.8% | 6.7% |
| Age 60 to 64 | 4.8% | 7.2% | 6.3% |
| Age 65 to 74 | 5.3% | 7.5% | 9.6% |
| Age 75 to 84 | 1.0% | 6.4% | 4.5% |
| Age 85 and over | 0.0% | 4.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Horace, ND | Milan, IN | United States |
| White | 93.4% | 93.3% | 59.4% |
| Black | 2.4% | 0.0% | 12.2% |
| Asian | 0.0% | 3.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.7% | 0.4% |
| Two or More Races | 1.1% | 1.8% | 3.2% |
| Hispanic | 2.6% | 1.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Horace, ND | Milan, IN | United States |
| Married Population | 71.7% | 50.0% | 49.8% |
| Currently Married | 71.7% | 48.4% | 48.0% |
| Married but Separated | 0.0% | 1.7% | 1.8% |
| Single Population | 28.3% | 50.0% | 50.2% |
| Never Married | 18.8% | 24.4% | 33.8% |
| Divorced | 7.1% | 14.3% | 10.8% |
| Widowed | 2.5% | 11.3% | 5.6% |
| space5 | | | |
| Household Size | 2.84 | 2.54 | 2.60 |
| Households | 1,106 | 727 | 124,010,992 |
| Family Households | 936 | 459 | 80,755,759 |
| Married couple, w/children | 57.9% | 33.3% | 30.5% |
| Married couple, no children | 30.3% | 41.0% | 42.9% |
| Non Family Households | 170 | 268 | 43,255,233 |
| Single householder, w/children | 9.2% | 19.6% | 15.8% |
| Single householder, no children | 2.6% | 6.1% | 10.8% |