| Name | Status | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|
| Marion | County | 30,001 | 32,048 | 33,309 | o |
| Iowa | Federal State | 2,776,831 | 2,926,538 | 3,046,355 |
| Name | Status | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|
| Bussey | City | 507 | 450 | 422 | o |
| Hamilton | City | 115 | 144 | 130 | o |
| Harvey | City | 235 | 277 | 235 | o |
| Knoxville | City | 8,320 | 7,746 | 7,313 | o |
| Marysville | City | 65 | 54 | 66 | o |
| Melcher-Dallas | City | 1,321 | 1,298 | 1,288 | o |
| Pella | City | 9,347 | 9,933 | 10,352 | o |
| Pleasantville | City | 1,483 | 1,568 | 1,694 | o |
| Swan | City | 70 | 121 | 72 | o |
Source: US Census Bureau (web).
2011-04-03WWW.CITYPOPULATION.DE