| Name | Jasper County |
| State | Iowa |
| FIPS Code | 19099 |
| County Seat | Newton |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 37,991 |
| Population Growth Rate(2020-2024) | 0.47% |
| Majority Ethnicity | White 94.58% |
| Public School Majority Ethnicity | White 88% |
| Partisan Voting Index | Republican:+13 |
| Unemployment Rate (May 2026) | 3.6% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 641 / 515 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 94.58% |
| African American | 1.58% |
| Hispanic | 2.99% |
| Asian | 0.6% |
| Native American | 0.09% |
| Hawaiin/Pacific Islander | 0.16% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 87.58% |
| African American | 2.05% |
| Hispanic | 5.28% |
| Asian | 0.49% |
| Native American | 0.39% |
| Hawaiin/Pacific Islander | 0.21% |