| Name | Butler County |
| State | Kansas |
| FIPS Code | 20015 |
| County Seat | El Dorado |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 68,638 |
| Population Growth Rate(2020-2024) | 1.84% |
| Majority Ethnicity | White 89.55% |
| Public School Majority Ethnicity | White 79% |
| Partisan Voting Index | Strongly Republican:+21 |
| Unemployment Rate (May 2026) | 4.2% |
| Sales Tax Rate (2025) | 6.5% |
| Area Code(s) | 316 / 620 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 89.55% |
| African American | 2.27% |
| Hispanic | 5.69% |
| Asian | 1.62% |
| Native American | 0.74% |
| Hawaiin/Pacific Islander | 0.14% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 78.95% |
| African American | 2.59% |
| Hispanic | 9.78% |
| Asian | 2.69% |
| Native American | 0.66% |
| Hawaiin/Pacific Islander | 0.2% |