| Place Name | Ottawa |
| Place Type | City |
| ZIP Code(s) | 66067 |
| County | Franklin County |
| Area Code(s) | 785 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 12,596 |
| Population Growth Rate (2010-19) | -0.19% |
| Majority Ethnicity | White 93.75% |
| Metro/Micro Stats Area | Ottawa, KS |
| US Congressional District(s) | Kansas 2nd |
| State House Districts | 59 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.75% |
| African American | 0.92% |
| Hispanic | 0.13% |
| Asian | 0.76% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.44% |