Vassar is an unincorporated community in Osage County, Kansas, United States. As of the 2020 census, the population of the community and nearby areas was 584. It is located northeast of Lyndon, also about half a mile south of Pomona Lake.
History
A post office was opened in La Mont's Hill (an extinct town) in 1871, but it was moved to Vassar in 1887. Vassar still has a post office with ZIP code 66543.
The Missouri Pacific Railroad previously went through Vassar, but it was abandoned, then later it was converted into the Flint Hills Nature Trail.
Geography
Climate
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Vassar has a humid subtropical climate, abbreviated "Cfa" on climate maps.
Demographics
For statistical purposes, the United States Census Bureau has defined this community as a census-designated place (CDP).
