Ogle County, Illinois
Ogle County: county in Illinois, United States
About
Ogle County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 53,497 and a population density of 27 people per km². After 10 years in 2020 county had an estimated population of 50,306 inhabitants. Its county seat is Oregon. The county was created 190 years ago in 1836.
County Snapshot
Ogle County at a glance
Ogle County currently has 20 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
20
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
FlaggPopulation 12,745
Top linked places
Quick Facts about Ogle County
| Population | 50,306 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Area | 1977 km2 |
| Water as percent of area | 0.6% |
| Land as percent of area | 99.4% |
| Latitude & Longitude | 42.0426,-89.3207 |
| Named for | Joseph Ogle |
| Altitude | 853 feet / 260 meters |
| Capital | Oregon |
| Establishment | January 16, 1836 |
| Time Zone | America/Chicago |
| Local time | 20:26:46 (14th April 2026) |
| Density | 25 Pop. per km² as of 2020 |
| Population growth | -6.34% (2010-2020) |
| Weather | 76℉ Showers And Thunderstorms 7-days weather |
Geography
Ogle County is located at 42°2'34"N 89°19'14"W (42.0426400, -89.3206500). It has 7 neighbors: Boone County, Carroll County, DeKalb County, Lee County, Stephenson County, Whiteside County and Winnebago County.
Ogle County map
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The largest city of Ogle County is Flagg with a population of 12,745. Other cities include, Rochelle population 8,975, Byron population 3,650, Oregon population 3,449 and Mount Morris population 2,776. See all Ogle County cities & populated places.
Ogle County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Ogle County.
| City Name | Population | Title |
|---|---|---|
| Flagg | 12,745 | City in Illinois, United States of America |
| Rochelle | 8,975 | City in Ogle County, Illinois, United States |
| Byron | 3,650 | City in Ogle County, Illinois, United States |
| Oregon | 3,449 | City in Ogle County, Illinois, United States |
| Mount Morris | 2,776 | Village in Illinois |
| Davis Junction | 2,344 | City in Illinois, United States of America |
| Polo | 2,158 | Town in Illinois, USA |
| Honey Creek | 1,437 | Township in Adams County, Illinois |
| Forreston | 1,338 | City in Illinois, United States of America |
| Hillcrest | 1,216 | City in Illinois, United States of America |
| Stillman Valley | 1,043 | Valley in Texas, United States of America |
| White Rock | 684 | Unincorporated community in Illinois |
| Grand Detour | 652 | Census-designated place in Illinois, USA |
| Creston | 642 | City in Illinois, United States of America |
| Maryland | 500 | Township of Illinois |
| Monroe Center | 429 | City in United States of America |
Weather
Showers and thunderstorms. Partly sunny, with a high near 76.
7-Day ForecastOfficial website of Ogle County
Official WebsiteDemographics
According to census records, the population of Ogle County decreased by 6.34% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 53,497 | - | census |
| 2011 | 53,064 | -0.82% | estimation process |
| 2012 | 52,776 | -0.55% | estimation process |
| 2013 | 52,266 | -0.98% | estimation process |
| 2014 | 51,931 | -0.65% | estimation process |
| 2015 | 51,559 | -0.72% | estimation process |
| 2016 | 51,148 | -0.8% | estimation process |
| 2017 | 50,993 | -0.3% | estimation process |
| 2018 | 50,781 | -0.42% | estimation process |
| 2019 | 50,643 | -0.27% | estimation process |
| 2020 | 50,306 | -0.67% | estimation process |
People born in Ogle County (2)
People born in Ogle County, including physician Sarah Hackett Stevenson, military officer Charles Irving Martin, .
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. |