Hillsboro, Illinois

Hillsboro is a city in Montgomery County, Illinois, United States. The population was 6,207 at the 2010 census.[5] It is the county seat of Montgomery County.[6]

The City of Hillsboro
Entering from the northwest on Illinois Route 16
"Pride, Progress, Prosperity"[1]
Location of Hillsboro in Montgomery County, Illinois.
Location of Illinois in the United States
Coordinates: 39°9′54″N 89°29′4″W
CountryUnited States
  MayorBrian Sullivan [2]
  Total8.32 sq mi (21.56 km2)
  Land6.55 sq mi (16.97 km2)
  Water1.77 sq mi (4.59 km2)
623 ft (190 m)
  Density926.73/sq mi (357.79/km2)
Time zoneUTC-6 (CST)
  Summer (DST)UTC-5 (CDT)
ZIP Code(s)
Area code(s)217
FIPS code17-35047
Wikimedia CommonsHillsboro, Illinois
WebsiteCity of Hillsboro, Illinois Website


The community was founded in 1823[1] and incorporated on March 26, 1913.[7]

There is some doubt about the origin of the city's name. The local terrain is quite hilly, as a result of the drainage of the Shoal Creek watershed, causing widespread belief that this is the name's source. Alternatively, there is the belief that it was named for Hillsborough, North Carolina, the home of some of the early settlers, including Hiram Rountree and John Nussman.[8]


Hillsboro is located at 39°9′54″N 89°29′4″W (39.164973, −89.484572).[9]

According to the 2010 census, Hillsboro has a total area of 8.322 square miles (21.55 km2), of which 6.55 square miles (16.96 km2) (or 78.71%) is land and 1.772 square miles (4.59 km2) (or 21.29%) is water.[10]


Historical population
Est. 20185,996[4]−3.4%
U.S. Decennial Census[11]

As of the census[12] of 2000, there were 4,359 people, 1,800 households, and 1,189 families residing in the city. The population density was 1,214.9 people per square mile (468.8/km²). There were 1,944 housing units at an average density of 541.8 per square mile (209.1/km²). The racial makeup of the city was 97.22% White, 1.10% African American, 0.32% Native American, 0.37% Asian, 0.07% Pacific Islander, 0.39% from other races, and 0.53% from two or more races. Hispanic or Latino of any race were 1.19% of the population.

There were 1,800 households out of which 33.1% had children under the age of 18 living with them, 50.2% were married couples living together, 11.9% had a female householder with no husband present, and 33.9% were non-families. 30.0% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.91.

In the city, the population was spread out with 25.8% under the age of 18, 8.4% from 18 to 24, 27.2% from 25 to 44, 21.0% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 85.7 males. For every 100 females age 18 and over, there were 80.3 males.

The median income for a household in the city was $33,075, and the median income for a family was $40,135. Males had a median income of $31,821 versus $18,668 for females. The per capita income for the city was $17,458. About 14.3% of families and 17.2% of the population were below the poverty line, including 24.9% of those under age 18 and 11.9% of those age 65 or over.

Protected areas

The Bremer Sanctuary, north of Hillsboro, is the southeastern terminus of the Arches Rail Trail. The 3-mile-long rail trail connects the Hillsboro area with nearby Butler.[13]

Notable people


  1. "City of Hillsboro, Illinois". City of Hillsboro, Illinois. Retrieved August 31, 2012.
  2. "City of Hillsboro Officials". Retrieved November 10, 2017.
  3. "2016 U.S. Gazetteer Files". United States Census Bureau. Retrieved Jun 29, 2017.
  4. "Population and Housing Unit Estimates". Retrieved September 7, 2019.
  5. "Archived copy" (PDF). Archived from the original (PDF) on 2013-09-28. Retrieved 2013-03-17.CS1 maint: archived copy as title (link)
  6. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved 2011-06-07.
  7. "Hillsboro, Illinois". City-Data.com. Retrieved August 31, 2012.
  8. "Archived copy". Archived from the original on 2013-11-01. Retrieved 2013-06-16.CS1 maint: archived copy as title (link)
  9. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
  10. "G001 - Geographic Identifiers - 2010 Census Summary File 1". United States Census Bureau. Retrieved 2015-12-27.
  11. "Census of Population and Housing". Census.gov. Archived from the original on April 26, 2015. Retrieved June 4, 2015.
  12. "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
  13. Slepica, Nancy Bliss (18 October 2012). "Arches Trail Now Open To The Public". The Journal-News.
  14. "Otto Funk". Historical Society of Montgomery County, Illinois. Retrieved August 31, 2012.
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