Mercer County, Illinois
Mercer County: County in Illinois, United States
About
Mercer County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 16,434 and a population density of 11 people per km². After 10 years in 2020 county had an estimated population of 15,225 inhabitants. Its county seat is Aledo. The county was created 200 years ago in 1825.
![Mercer County locator map](https://cdn.mapsof.net/images/490/4901976/mercer-county-il-locator-map-image_190273.png)
Quick Facts about Mercer County
Population : | 15,225 (2020) |
Country : | United States of America |
State : | Illinois (United States) |
Different from : | Mercer County, Mercer County, Mercer County, Mercer County, Mercer County, Mercer County, Mercer County |
Area : | 1453 km2 |
Water as percent of area : | 1.3% |
Land as percent of area : | 98.7% |
Named for : | Hugh Mercer |
Capital : | Aledo |
Establishment : | January 01, 1825 |
Time Zone : | America/Chicago |
Local time : | 2/12/2025 - 9:12:19 AM |
Density : | 10 Pop. per km² as of 2020 |
Population growth : | -7.94% (2010-2020) |
![Mercer County Courthouse Image. image](https://cdn.mapsof.net/images/490/4901976/mercer-county-il-image_66937.jpeg)
![Mercer County Courthouse Image. image](https://cdn.mapsof.net/images/490/4901976/mercer-county-il-image_66937.jpeg)
Geography
Mercer County is located at 41°12'19"N 90°44'29"W (41.2053400, -90.7414100). It has 7 neighbors: Des Moines County, Louisa County, Henderson County, Henry County, Knox County, Rock Island County and Warren County.
Mercer County map
The largest city of Mercer County is Aledo with a population of 3,383. Other cities include, Burgess population 2,249, Matherville population 651, Sherrard population 588 and Eliza population 385. See all Mercer County cities & populated places.
Mercer County Populated Places
Cities, towns, neighborhoods & other populated places in Mercer County.
City Name | Population | Title |
---|---|---|
Aledo | 3,383 | City in Mercer County, Illinois, United States |
Burgess | 2,249 | Unincorporated community in Illinois |
Preemption | 1,628 | Township in Mercer County, Illinois |
Viola | 874 | Village in Illinois, United States |
Millersburg | 688 | Township in Mercer County, Illinois |
Matherville | 651 | Human settlement in Illinois, United States of America |
New Boston | 644 | Township in Mercer County, Illinois |
Sherrard | 588 | Human settlement in Illinois, United States of America |
Keithsburg | 569 | Township in Mercer County, Illinois, United States |
Norwood | 447 | Village in Peoria County, Illinois, United States |
Eliza | 385 | Unincorporated community in Illinois |
Joy | 377 | Village in Illinois, United States |
North Henderson | 206 | Township in Mercer County, Illinois |
- Official Website
Official website of Mercer County
Mercer County has 7 neighbours.
- Des Moines County county in Iowa, United States
- Louisa County county in Iowa, United States
- Henderson County county in Illinois, United States
- Henry County county in Illinois, United States
- Knox County county in Illinois, United States
- Rock Island County county in Illinois, United States
- Warren County county in Illinois, United States
Demographics
According to census records, the population of Mercer County decreased by 7.94% in 10 years.
Year | Population | % Change | Method |
2010 | 16,434 | - | census |
2011 | 16,316 | -0.72% | estimation process |
2012 | 16,163 | -0.95% | estimation process |
2013 | 16,075 | -0.55% | estimation process |
2014 | 15,901 | -1.09% | estimation process |
2015 | 15,746 | -0.98% | estimation process |
2016 | 15,602 | -0.92% | estimation process |
2017 | 15,608 | 0.04% | estimation process |
2018 | 15,551 | -0.37% | estimation process |
2019 | 15,437 | -0.74% | estimation process |
2020 | 15,225 | -1.39% | estimation process |
People born in Mercer County (4)
People born in Mercer County, including United States federal judge Orie Leon Phillips, mayor William Arthur Ginn, academic Ida Morey Riley, .
List
- Oliver W. Stewart he was born in 22/05/1867
Other places with the same name (8)
- Mercer County , New Jersey county in West Virginia, United States with a population of 367,239 people.
- Mercer County , Pennsylvania county in Pennsylvania, United States with a population of 108,545 people.
- Mercer County , West Virginia county in West Virginia, United States with a population of 58,258 people.
- Mercer County , Ohio county in Ohio, United States with a population of 41,274 people.
- Mercer County , Kentucky county in Kentucky, United States with a population of 21,889 people.
- Mercer County , North Dakota county in North Dakota, United States with a population of 8,174 people.
- Mercer County , Missouri county in Missouri, United States with a population of 3,558 people.
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. |