Thayer
- County:
- Neosho County
- County Seat:
- No
- Area (mi²):
- 0.545
- State:
- Kansas
Thayer is a city located in Neosho County, Kansas. Thayer has a 2026 population of 426. Thayer is currently growing at a rate of 0.47% annually but its population has decreased by -2.52% since the most recent census, which recorded a population of 437 in 2020.
The median household income in Thayer is $85,635 with a poverty rate of 8.96%. The median age in Thayer is 56 years: 58 years for males, and 55.8 years for females. For every 100 females there are 76.8 males.