| Name | Delaware County |
| State | Ohio |
| FIPS Code | 39041 |
| County Seat | Delaware |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 174,454 |
| Population Growth Rate(2000-2022) | 22.91% |
| Majority Ethnicity | White 87.96% |
| Public School Majority Ethnicity | White 69% |
| Partisan Voting Index | Republican:+4 |
| Unemployment Rate (February 2025) | 3.5% |
| Area Code(s) | 220 / 740 / 380 / 614 / 326 / 937 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 87.96% |
| African American | 4.18% |
| Hispanic | 0.06% |
| Asian | 7.72% |
| Native American | 0.04% |
| Hawaiin/Pacific Islander | 0.04% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 69.46% |
| African American | 6.65% |
| Hispanic | 5.74% |
| Asian | 11.6% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0.05% |