| | Belle Plaine, IA | Atkins, IA | United States |
| Population | 2,419 | 2,241 | 329,725,481 |
| Female Population | 45.0% | 48.5% | 50.5% |
| Male Population | 55.0% | 51.5% | 49.5% |
| Median Age | 44.1 | 40.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,532 | 1,669 | 309,327,143 |
| Population - 2000 | 2,878 | 977 | 285,036,114 |
| Population - 1990 | 2,834 | 637 | 251,960,433 |
| Pop. 2000 to Now | -16.0% | 102.5% | 15.6% |
| Pop. 1990 to Now | -14.7% | 210.5% | 30.8% |
| space4 | | | |
| Population Density | 760.9 | 2,041.0 | 93.4 |
| Land Area | 3.2 | 1.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Belle Plaine, IA | Atkins, IA | United States |
| Age 0 to 4 | 6.3% | 6.1% | 5.9% |
| Age 5 to 9 | 4.3% | 5.9% | 6.1% |
| Age 10 to 14 | 4.9% | 8.3% | 6.6% |
| Age 15 to 17 | 4.9% | 7.4% | 3.9% |
| Age 18 to 20 | 3.3% | 2.2% | 4.0% |
| Age 21 to 24 | 4.2% | 3.2% | 5.2% |
| Age 25 to 34 | 11.5% | 6.6% | 13.8% |
| Age 35 to 44 | 13.9% | 18.4% | 12.9% |
| Age 45 to 54 | 11.9% | 16.6% | 12.6% |
| Age 55 to 59 | 6.9% | 7.7% | 6.7% |
| Age 60 to 64 | 4.4% | 6.6% | 6.3% |
| Age 65 to 74 | 14.8% | 6.8% | 9.6% |
| Age 75 to 84 | 5.5% | 2.9% | 4.5% |
| Age 85 and over | 3.2% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Belle Plaine, IA | Atkins, IA | United States |
| White | 93.4% | 97.2% | 59.4% |
| Black | 0.0% | 0.9% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 2.0% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 1.2% | 3.2% |
| Hispanic | 2.6% | 0.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Belle Plaine, IA | Atkins, IA | United States |
| Married Population | 49.7% | 68.6% | 49.8% |
| Currently Married | 46.4% | 68.5% | 48.0% |
| Married but Separated | 3.2% | 0.1% | 1.8% |
| Single Population | 50.3% | 31.4% | 50.2% |
| Never Married | 27.6% | 20.8% | 33.8% |
| Divorced | 15.8% | 7.6% | 10.8% |
| Widowed | 7.0% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.35 | 2.79 | 2.60 |
| Households | 1,011 | 804 | 124,010,992 |
| Family Households | 611 | 661 | 80,755,759 |
| Married couple, w/children | 20.5% | 41.5% | 30.5% |
| Married couple, no children | 53.5% | 49.6% | 42.9% |
| Non Family Households | 400 | 143 | 43,255,233 |
| Single householder, w/children | 20.9% | 8.3% | 15.8% |
| Single householder, no children | 5.1% | 0.6% | 10.8% |