McDonough County, Illinois
McDonough County: county in Illinois, United States
About
McDonough County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 32,612 and a population density of 21 people per km². After 10 years in 2020 county had an estimated population of 29,295 inhabitants. Its county seat is Macomb. The county was created 200 years ago in 1825.
County Snapshot
McDonough County at a glance
McDonough County currently has 10 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
10
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Illinois counties
102
Open related pagesLargest city
MacombPopulation 17,206
Top linked places
Quick Facts about McDonough County
| Population | 29,295 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Area | 1528 km2 |
| Water as percent of area | 0.1% |
| Land as percent of area | 99.9% |
| Latitude & Longitude | 40.4562,-90.6779 |
| Named for | Thomas Macdonough |
| Altitude | 699 feet / 213 meters |
| Capital | Macomb |
| Establishment | January 01, 1826 |
| Time Zone | America/Chicago |
| Local time | 03:55:37 (19th April 2026) |
| Density | 19 Pop. per km² as of 2020 |
| Population growth | -11.32% (2010-2020) |
| Weather | 58℉ Sunny 7-days weather |
Geography
McDonough County is located at 40°27'22"N 90°40'40"W (40.4562100, -90.6779100). It has 5 neighbors: Fulton County, Hancock County, Henderson County, Schuyler County and Warren County.
McDonough County map
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The largest city of McDonough County is Macomb with a population of 17,206. Other cities include, Bushnell population 2,825, Colchester population 1,273, Industry population 432 and Good Hope population 361. See all McDonough County cities & populated places.
McDonough County Populated Places
Cities, towns, neighborhoods & other populated places in McDonough County.
| City Name | Population | Title |
|---|---|---|
| Macomb | 17,206 | City in and the county seat of McDonough County, Illinois, United States |
| Bushnell | 2,825 | Town in Florida, United States |
| Colchester | 1,273 | City in McDonough County, Illinois, United States |
| Walnut Grove | 714 | Township in McDonough County, Illinois |
| Blandinsville | 586 | Township in McDonough County, Illinois |
| Industry | 432 | Village in Illinois, US |
| Good Hope | 361 | Village in United States of America |
| Prairie City | 344 | Township in McDonough County, Illinois |
| Bardolph | 227 | Village in the United States |
| Tennessee | 106 | Village in Illinois, United States |
Official website of McDonough County
Official WebsiteDemographics
According to census records, the population of McDonough County decreased by 11.32% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 32,612 | - | census |
| 2011 | 32,521 | -0.28% | estimation process |
| 2012 | 32,558 | 0.11% | estimation process |
| 2013 | 32,253 | -0.95% | estimation process |
| 2014 | 31,799 | -1.43% | estimation process |
| 2015 | 31,449 | -1.11% | estimation process |
| 2016 | 30,907 | -1.75% | estimation process |
| 2017 | 30,373 | -1.76% | estimation process |
| 2018 | 29,984 | -1.3% | estimation process |
| 2019 | 29,682 | -1.02% | estimation process |
| 2020 | 29,295 | -1.32% | estimation process |
People born in McDonough County (5)
People born in McDonough County, including politician Richard P. Myers, politician L. L. Westfall, mathematician Clara Latimer Bacon, .
More notable people
- Ira Lawrence Hill (American photographer) he was born in 24/12/1880
- Samuel James Clarke (American publisher) he was born in 17/03/1842
Illinois Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Cook County | 5,108,284 | County in Illinois, United States |
| Chicago | 2,677,643 | The third most populous city in the United States and the center of the Chicago metropolitan area. |
| DuPage County | 917,481 | County in Illinois, United States |
| Lake County | 693,593 | County in Oregon, United States |
| Will County | 688,726 | County in Illinois, United States |
| Kane County | 531,010 | County in southern Utah, United States |
| McHenry County | 305,888 | County in Illinois, United States |
| Winnebago County | 281,295 | County in Illinois, United States |
| Madison County | 262,635 | County in Montana, United States |
| Saint Clair County | 258,046 | The County of St. |
| Champaign County | 209,192 | County in Illinois, United States |
| Aurora | 196,383 | The second most populous city in Illinois. |
| Sangamon County | 193,882 | County in Illinois, United States |
| Peoria County | 177,652 | County in Illinois, United States of America |
| McLean County | 171,256 | County in North Dakota, United States |
| Naperville | 147,986 | The second most populous city in Illinois. |