| Name | Barton County |
| State | Missouri |
| FIPS Code | 29011 |
| County Seat | Lamar |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 12,428 |
| Population Growth Rate(2000-2022) | -6.17% |
| Majority Ethnicity | White 98.48% |
| Public School Majority Ethnicity | White 90% |
| Partisan Voting Index | Strongly Republican:+37 |
| Unemployment Rate (January 2025) | 3.3% |
| Area Code(s) | 417 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 98.48% |
| African American | 0.3% |
| Hispanic | 1.14% |
| Asian | 0.03% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 0.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 89.87% |
| African American | 0.48% |
| Hispanic | 4.46% |
| Asian | 0.36% |
| Native American | 0.9% |
| Hawaiin/Pacific Islander | 0.12% |