what county in iowa is hillsboro in
Sponsored Topics. Hillsboro is a city in Henry County, Iowa, United States. The population was 205 at the 2000 census. Hillsboro is located at 40Â°50â²11â³N 91Â°42â²49â³W / 40.83639Â°N 91.71361Â°W / 40.83639; -91.71361 (40.836270, -91.713613). According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.3 kmÂ²), all of it land.