| | Neillsville, WI | Ladysmith, WI | United States |
| Population | 2,385 | 3,194 | 329,725,481 |
| Female Population | 50.0% | 53.8% | 50.5% |
| Male Population | 50.0% | 46.2% | 49.5% |
| Median Age | 40.8 | 43.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,460 | 3,395 | 309,327,143 |
| Population - 2000 | 2,731 | 3,932 | 285,036,114 |
| Population - 1990 | 2,680 | 3,938 | 251,960,433 |
| Pop. 2000 to Now | -13.0% | -22.3% | 15.6% |
| Pop. 1990 to Now | -11.4% | -22.5% | 30.8% |
| space4 | | | |
| Population Density | 868.9 | 756.9 | 93.4 |
| Land Area | 2.7 | 4.2 | 3,531,905.4 |
| Water Area | 0.1 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Neillsville, WI | Ladysmith, WI | United States |
| Age 0 to 4 | 7.0% | 6.0% | 5.9% |
| Age 5 to 9 | 5.7% | 5.1% | 6.1% |
| Age 10 to 14 | 6.4% | 4.9% | 6.6% |
| Age 15 to 17 | 5.9% | 5.1% | 3.9% |
| Age 18 to 20 | 2.1% | 4.1% | 4.0% |
| Age 21 to 24 | 2.7% | 3.7% | 5.2% |
| Age 25 to 34 | 11.9% | 10.9% | 13.8% |
| Age 35 to 44 | 11.7% | 10.9% | 12.9% |
| Age 45 to 54 | 11.3% | 12.6% | 12.6% |
| Age 55 to 59 | 6.0% | 7.7% | 6.7% |
| Age 60 to 64 | 8.6% | 7.9% | 6.3% |
| Age 65 to 74 | 8.0% | 9.0% | 9.6% |
| Age 75 to 84 | 6.1% | 6.9% | 4.5% |
| Age 85 and over | 6.6% | 5.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Neillsville, WI | Ladysmith, WI | United States |
| White | 93.5% | 91.9% | 59.4% |
| Black | 1.1% | 1.7% | 12.2% |
| Asian | 0.1% | 0.6% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.7% | 2.6% | 3.2% |
| Hispanic | 1.3% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Neillsville, WI | Ladysmith, WI | United States |
| Married Population | 43.1% | 41.7% | 49.8% |
| Currently Married | 42.8% | 41.7% | 48.0% |
| Married but Separated | 0.3% | 0.0% | 1.8% |
| Single Population | 57.0% | 58.3% | 50.2% |
| Never Married | 30.8% | 30.5% | 33.8% |
| Divorced | 18.2% | 15.7% | 10.8% |
| Widowed | 8.0% | 12.1% | 5.6% |
| space5 | | | |
| Household Size | 2.12 | 2.13 | 2.60 |
| Households | 1,069 | 1,437 | 124,010,992 |
| Family Households | 505 | 785 | 80,755,759 |
| Married couple, w/children | 36.6% | 25.2% | 30.5% |
| Married couple, no children | 42.6% | 40.3% | 42.9% |
| Non Family Households | 564 | 652 | 43,255,233 |
| Single householder, w/children | 17.8% | 25.0% | 15.8% |
| Single householder, no children | 3.0% | 9.6% | 10.8% |