| | Luther, IA | Roland, IA | United States |
| Population | 177 | 1,386 | 329,725,481 |
| Female Population | 48.6% | 46.9% | 50.5% |
| Male Population | 51.4% | 53.1% | 49.5% |
| Median Age | 52.8 | 39.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 122 | 1,285 | 309,327,143 |
| Population - 2000 | 158 | 1,324 | 285,036,114 |
| Population - 1990 | 154 | 1,035 | 251,960,433 |
| Pop. 2000 to Now | -15.8% | -5.4% | 15.6% |
| Pop. 1990 to Now | -13.6% | 21.0% | 30.8% |
| space4 | | | |
| Population Density | 301.0 | 1,209.4 | 93.4 |
| Land Area | 0.6 | 1.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Luther, IA | Roland, IA | United States |
| Age 0 to 4 | 4.0% | 8.9% | 5.9% |
| Age 5 to 9 | 3.4% | 5.2% | 6.1% |
| Age 10 to 14 | 2.3% | 5.3% | 6.6% |
| Age 15 to 17 | 5.7% | 7.6% | 3.9% |
| Age 18 to 20 | 5.1% | 0.6% | 4.0% |
| Age 21 to 24 | 0.0% | 2.5% | 5.2% |
| Age 25 to 34 | 9.0% | 15.7% | 13.8% |
| Age 35 to 44 | 6.8% | 8.8% | 12.9% |
| Age 45 to 54 | 19.2% | 19.2% | 12.6% |
| Age 55 to 59 | 12.4% | 5.7% | 6.7% |
| Age 60 to 64 | 3.4% | 8.7% | 6.3% |
| Age 65 to 74 | 13.0% | 8.2% | 9.6% |
| Age 75 to 84 | 9.0% | 2.5% | 4.5% |
| Age 85 and over | 6.8% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Luther, IA | Roland, IA | United States |
| White | 97.7% | 99.0% | 59.4% |
| Black | 0.0% | 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 | 2.3% | 0.6% | 3.2% |
| Hispanic | 0.0% | 0.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Luther, IA | Roland, IA | United States |
| Married Population | 45.6% | 59.1% | 49.8% |
| Currently Married | 43.1% | 58.3% | 48.0% |
| Married but Separated | 2.5% | 0.8% | 1.8% |
| Single Population | 54.4% | 40.9% | 50.2% |
| Never Married | 28.8% | 27.2% | 33.8% |
| Divorced | 16.9% | 10.0% | 10.8% |
| Widowed | 8.8% | 3.7% | 5.6% |
| space5 | | | |
| Household Size | 2.60 | 2.22 | 2.60 |
| Households | 68 | 625 | 124,010,992 |
| Family Households | 52 | 364 | 80,755,759 |
| Married couple, w/children | 9.6% | 45.6% | 30.5% |
| Married couple, no children | 55.8% | 44.2% | 42.9% |
| Non Family Households | 16 | 261 | 43,255,233 |
| Single householder, w/children | 21.2% | 8.2% | 15.8% |
| Single householder, no children | 13.5% | 1.9% | 10.8% |