| Name | Delaware County |
| State | Ohio |
| FIPS Code | 39041 |
| County Seat | Delaware |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 232,732 |
| Population Growth Rate(2020-2024) | 8% |
| Majority Ethnicity | White 84.01% |
| Public School Majority Ethnicity | White 69% |
| Partisan Voting Index | Republican:+4 |
| Unemployment Rate (May 2026) | 3.6% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 220 / 740 / 380 / 614 / 326 / 937 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 84.01% |
| African American | 4.31% |
| Hispanic | 3.44% |
| Asian | 8.14% |
| Native American | 0.05% |
| 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% |