Whiteside County, Illinois
Whiteside County: county in Illinois, United States
About
Whiteside County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 58,498 and a population density of 84 people per km². After 10 years in 2020 county had an estimated population of 54,656 inhabitants. Its county seat is Morrison. The county was created 190 years ago in 1835.
County Snapshot
Whiteside County at a glance
Whiteside County currently has 18 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
18
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
SterlingPopulation 14,313
Top linked places
Quick Facts about Whiteside County
| Population | 54,656 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Area | 697 km2 |
| Water as percent of area | 1.8% |
| Land as percent of area | 98.2% |
| Latitude & Longitude | 41.7563,-89.9141 |
| Named for | Samuel Whiteside |
| Altitude | 666 feet / 203 meters |
| Capital | Morrison |
| Establishment | January 01, 1836 |
| Time Zone | America/Chicago |
| Local time | 16:57:48 (22nd April 2026) |
| Density | 78 Pop. per km² as of 2020 |
| Population growth | -7.03% (2010-2020) |
| Weather | 71℉ Sunny 7-days weather |
Geography
Whiteside County is located at 41°45'23"N 89°54'51"W (41.7562600, -89.9140900). It has 7 neighbors: Clinton County, Bureau County, Carroll County, Henry County, Lee County, Ogle County and Rock Island County.
Whiteside County map
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The largest city of Whiteside County is Sterling with a population of 14,313. Other cities include, Rock Falls population 8,648, Morrison population 3,950, Fulton population 3,285 and Prophetstown population 1,919. See all Whiteside County cities & populated places.
Whiteside County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Whiteside County.
| City Name | Population | Title |
|---|---|---|
| Sterling | 14,313 | City in Whiteside County, Illinois, United States |
| Rock Falls | 8,648 | City in Illinois |
| Morrison | 3,950 | City in Whiteside County, Illinois, United States of America |
| Fulton | 3,285 | City in Illinois |
| Prophetstown | 1,919 | City in Whiteside County, Illinois, United States |
| Erie | 1,482 | Village in Whiteside County, Illinois |
| Union Grove | 1,113 | Township in Whiteside County, Illinois |
| Garden Plain | 999 | Township of Illinois |
| Albany | 856 | Village in Whiteside County, Illinois, United States |
| Tampico | 721 | Township in Whiteside County, Illinois |
| Lyndon | 604 | City in Illinois, United States of America |
| Ustick | 581 | Township in Whiteside County, Illinois |
| Fenton | 507 | City in Whiteside County, Illinois, United States of America |
| Portland | 395 | Township in Whiteside County, Illinois, United States of America |
| Round Grove | 346 | Township in Livingston County, Illinois |
| Hahnaman | 330 | Township of Illinois |
Official website of Whiteside County
Official WebsiteDemographics
According to census records, the population of Whiteside County decreased by 7.03% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 58,498 | - | census |
| 2011 | 58,286 | -0.36% | estimation process |
| 2012 | 57,766 | -0.9% | estimation process |
| 2013 | 57,468 | -0.52% | estimation process |
| 2014 | 57,021 | -0.78% | estimation process |
| 2015 | 56,919 | -0.18% | estimation process |
| 2016 | 56,476 | -0.78% | estimation process |
| 2017 | 55,955 | -0.93% | estimation process |
| 2018 | 55,553 | -0.72% | estimation process |
| 2019 | 55,175 | -0.69% | estimation process |
| 2020 | 54,656 | -0.95% | estimation process |
People born in Whiteside County (2)
People born in Whiteside County, including football player and coach Os Doenges, Wayne Arey, .
More notable 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. |