| Name | Delaware County |
| State | Iowa |
| FIPS Code | 19055 |
| County Seat | Manchester |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 17,721 |
| Population Growth Rate(2000-2022) | -1.55% |
| Majority Ethnicity | White 99.69% |
| Public School Majority Ethnicity | White 92% |
| Partisan Voting Index | Republican:+20 |
| Unemployment Rate (February 2025) | 2.7% |
| Area Code(s) | 563 / 319 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 99.69% |
| African American | 0.01% |
| Hispanic | 0.09% |
| Asian | 0.21% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 91.75% |
| African American | 2.79% |
| Hispanic | 2.83% |
| Asian | 0.21% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0.21% |