Hillsboro is a city in Marion County, Kansas, United States.

The City of Hillsboro is located within the town.

Hillsboro is a town in Pocahontas County, West Virginia, United States.

Hillsboro is a city in Montgomery County, Illinois, United States.

Hillsboro is a city in Traill County, North Dakota, United States.

Hillsborough County is a county located in the State of Florida.

Hillsboro is a city in and the county seat of Highland County, Ohio, United States.

New Boston is a town in Hillsborough County, New Hampshire, United States.