 willis is a city in brown county, kansas, united states. as of the 2010 census, the city population was 38. ==history== a post office was opened in mission centre (an extinct town) in 1887, but it was moved to willis in 1882 and remained in operation until it was discontinued in 1960.{{cite web | url=https://web.archive.org/web/20131009123903/http://www.kshs.org/geog/geog_postoffices
Cities_in_Brown_County,_Kansas Cities_in_Kansas