Hillsboro is a city in Henry County, Iowa, United States. The population was 163 at the time of the 2020 census.
thumb|left|Hillsboro Christian church
History
Hillsboro (or Hillsborough) was originally called Washington, but the name was changed when it was discovered there was already a community called Washington in Iowa. Hillsboro was laid out in 1840.
Geography
According to the United States Census Bureau, the city has a total area of , all land.