Thayer is a city located in Neosho County Kansas. With a 2020 population of 470, it is the 290th largest city in Kansas and the 13581st largest city in the United States . Thayer is currently declining at a rate of 0.00% annually and its population has decreased by -5.43% since the most recent census, which recorded a population of 497 in 2010. Thayer reached it's highest population of 495 in 2010. Spanning over 1 miles, Thayer has a population density of 625 people per square mile.
The average household income in Thayer is $54,073 with a poverty rate of 16.37%. The median rental costs in recent years comes to $584 per month, and the median house value is $67,100. The median age in Thayer is 40.3 years, 30 years for males, and 47.4 years for females.