| Place Name | Thayer |
| Place Type | City |
| ZIP Code(s) | 66776 |
| County | Neosho County |
| Area Code(s) | 620 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 436 |
| Population Growth Rate (2010-19) | -13.08% |
| Majority Ethnicity | White 84.35% |
| US Congressional District(s) | Kansas 2nd |
| State House Districts | 13 |
| State Senate Districts | 15 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 84.35% |
| African American | 0% |
| Hispanic | 0.68% |
| Asian | 1.81% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 13.15% |