| | Durand, IL | Garnavillo, IA | United States |
| Population | 1,429 | 743 | 329,725,481 |
| Female Population | 49.2% | 44.0% | 50.5% |
| Male Population | 50.8% | 56.0% | 49.5% |
| Median Age | 37.9 | 38.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,456 | 747 | 309,327,143 |
| Population - 2000 | 1,081 | 754 | 285,036,114 |
| Population - 1990 | 1,100 | 727 | 251,960,433 |
| Pop. 2000 to Now | 28.3% | -5.0% | 15.6% |
| Pop. 1990 to Now | 26.1% | -1.5% | 30.8% |
| space4 | | | |
| Population Density | 1,525.1 | 727.0 | 93.4 |
| Land Area | 0.9 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Durand, IL | Garnavillo, IA | United States |
| Age 0 to 4 | 12.2% | 7.7% | 5.9% |
| Age 5 to 9 | 8.4% | 8.7% | 6.1% |
| Age 10 to 14 | 4.5% | 7.0% | 6.6% |
| Age 15 to 17 | 2.4% | 1.3% | 3.9% |
| Age 18 to 20 | 4.3% | 0.8% | 4.0% |
| Age 21 to 24 | 3.1% | 6.2% | 5.2% |
| Age 25 to 34 | 11.1% | 11.2% | 13.8% |
| Age 35 to 44 | 12.5% | 14.4% | 12.9% |
| Age 45 to 54 | 14.6% | 7.4% | 12.6% |
| Age 55 to 59 | 3.8% | 5.0% | 6.7% |
| Age 60 to 64 | 4.1% | 6.1% | 6.3% |
| Age 65 to 74 | 10.9% | 12.8% | 9.6% |
| Age 75 to 84 | 2.4% | 7.0% | 4.5% |
| Age 85 and over | 5.5% | 4.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Durand, IL | Garnavillo, IA | United States |
| White | 94.9% | 95.2% | 59.4% |
| Black | 0.6% | 0.0% | 12.2% |
| Asian | 0.9% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.3% | 0.4% |
| Two or More Races | 2.1% | 0.0% | 3.2% |
| Hispanic | 1.3% | 4.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Durand, IL | Garnavillo, IA | United States |
| Married Population | 55.1% | 63.8% | 49.8% |
| Currently Married | 54.6% | 62.7% | 48.0% |
| Married but Separated | 0.5% | 1.1% | 1.8% |
| Single Population | 44.9% | 36.2% | 50.2% |
| Never Married | 25.0% | 18.6% | 33.8% |
| Divorced | 14.4% | 10.0% | 10.8% |
| Widowed | 5.5% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.48 | 2.27 | 2.60 |
| Households | 548 | 327 | 124,010,992 |
| Family Households | 348 | 208 | 80,755,759 |
| Married couple, w/children | 29.3% | 33.2% | 30.5% |
| Married couple, no children | 48.0% | 57.2% | 42.9% |
| Non Family Households | 200 | 119 | 43,255,233 |
| Single householder, w/children | 13.2% | 4.3% | 15.8% |
| Single householder, no children | 9.5% | 5.3% | 10.8% |