Total number led homes in Onawa, by type | |
| Total Home Population: | 1,345 |
| Population of Family homes: | 756 |
| Population of 15 to 24 year olds: | 20 |
| Population of 25 to 34 year olds: | 116 |
| Population of 35 to 44 year olds: | 145 |
| Population of 45 to 54 year olds: | 157 |
| Population of 55 to 59 year olds: | 57 |
| Population of 60 to 64 year olds: | 58 |
| Population of 65 to 74 year olds: | 106 |
| Population of 75 to 84 year olds: | 72 |
| Population of 85 year olds and over: | 25 |
| Population of Nonfamily Homes: | 589 |
| Population of 15 to 24 year olds: | 22 |
| Population of 25 to 34 year olds: | 38 |
| Population of 35 to 44 year olds: | 40 |
| Population of 45 to 54 year olds: | 102 |
| Population of 55 to 59 year olds: | 51 |
| Population of 60 to 64 year olds: | 41 |
| Population of 65 to 74 year olds: | 105 |
| Population of 75 to 84 year olds: | 120 |
| Population of 85 year olds and over: | 70 |