Hillsdale is an unincorporated community in Miami County, Kansas, United States. Hillsdale is located near U.S. Route 169 and K-7 north-northeast of Paola. It is part of the Kansas City metropolitan area.
Hillsdale, originally called Columbia, was laid out in 1869 when the railroad was extended to that point.
The first post office in Columbia, established in August 1868, was renamed Hillsdale in April 1870, and still has a post office with ZIP code 66036.
For statistical purposes, the United States Census Bureau has defined Hillsdale as a census-designated place (CDP).
The community is served by Paola USD 368 public school district.