Ogle County, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 28th-largest in Illinois
The population of Ogle County, Illinois is 51,536 as of the 2023 American Community Survey, making it the 28th-largest county in Illinois. The median household income is $79,244, the median home value is $184,100, and the median age is 42.0.
The population of Ogle County has declined 3.9% since 2010 (53,420 → 51,345), a -0.28% annualized rate.
51,536
Population
-0.28%
Annual growth
68
People / sq mi
$79,244
Median Income
$184,100
Median Home Value
Ogle County covers 759 sq mi of land at 67.9 people per square mile.
About Ogle County, IL
What sets Ogle County apart is money: median household income runs $79,244, near the US median of $78,538. With 51,536 residents, Ogle County is a county in Illinois. It ranks #28 among counties in Illinois by population.
The typical household earns $79,244 a year, near the US median of $78,538. The poverty rate, 5.9%, is on the lower side for US counties and below the national 12.4%. Homes carry a median value of $184,100, with typical rent around $901.
24.0% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. About 7.2% of the workforce is home-based, below the national 14.0%, and the average commute runs about 27 minutes each way.
Taken together, the income and housing figures place Ogle County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Ogle County Population History (2010-2024)
The county of Ogle County had a population of 53,420 in 2010 and 51,345 in 2024, a -3.9% growth over 14 years. The peak was 53,420 in 2010. Average annual growth rate: -0.28%.
51,345
Population (2024)
53,420
Population (2010)
53,420
Peak (2010)
-0.28%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 53,420 |
| 2011 | 53,073 |
| 2012 | 52,788 |
| 2013 | 52,278 |
| 2014 | 51,944 |
| 2015 | 51,572 |
| 2016 | 51,174 |
| 2017 | 51,021 |
| 2018 | 50,802 |
| 2019 | 50,660 |
| 2020 | 51,762 |
| 2021 | 51,540 |
| 2022 | 51,437 |
| 2023 | 51,391 |
| 2024 | 51,345 |
Race & Ethnicity
| White | 87.7% |
| Black or African American | 1.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
42.0
Median Age
50.1%
Female
49.9%
Male
19.3%
Age 65+
Age Distribution
Children (under 15): 18.1% · Seniors (65+): 19.3%
Income & Poverty
| Median household income | $79,244$-2,458 vs state |
| Mean household income | $93,293 |
| Per-capita income | $38,251 |
| Poverty rate | 5.9%-2.3% vs state |
| Unemployment rate | 3.4% |
| Employment-to-population | 59.6% |
Top Industries by Employment
The largest employment sector in Ogle County is professional & business services, accounting for 25.1% of workers.
How residents commute
0.6%
Drive alone
1.6%
Carpool
81.4%
Public transit
7.2%
Work from home
26.8 min
Avg commute
Housing
$184,100$-66,400 vs state
Median home value
$901
Median rent
74.5%
Homeownership rate
22,625
Total housing units
91.5%
Occupied
8.5%
Vacant
25.5%
Renter-occupied
Social & access
95.7%
With health insurance
91.7%
With broadband internet
15.7%
Foreign-born
9.2%
Veterans (18+)
15.1%
With a disability
92.0%
Speak language other than English at home
Education
91.0%
High School+
24.0%
Bachelor's+
Largest cities in Illinois
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County rankings
Frequently Asked Questions
Ogle County, Illinois has a population of 51,536 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 28th-largest county in Illinois. Population density is 68 people per square mile.
The population of Ogle County has declined 3.9% since 2010 (53,420 → 51,345), a -0.28% annualized rate.
The median household income in Ogle County, Illinois is $79,244, with mean (average) household income of $93,293 and per-capita income of $38,251. 5.9% of residents live below the federal poverty level.
In Ogle County, the largest racial and ethnic groups are White (87.7%), Hispanic or Latino (1.3%), Black or African American (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Ogle County, Illinois is 42.0 years. Residents are 50.1% female and 49.9% male.
The median home value in Ogle County is $184,100 and median monthly rent is $901. 74.5% of occupied housing units are owner-occupied. The county has 22,625 total housing units, 8.5% of which are vacant.
The largest employment sector in Ogle County, Illinois is professional, scientific, and management services, employing 25.1% of workers. The unemployment rate is 3.4%.
Chicago is among the largest cities associated with Ogle County, Illinois, with a population of 2,707,648.
Ogle County, IL Climate
Ogle County, IL has an average annual temperature of 8.7°C (48°F) and receives about 921 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.7°C
Avg Temp
921
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -7° / 19° | 35 mm |
| February | -4° / 24° | 30 mm |
| March | 2° / 35° | 62 mm |
| April | 9° / 47° | 92 mm |
| May | 15° / 59° | 100 mm |
| June | 20° / 68° | 115 mm |
| July | 23° / 73° | 96 mm |
| August | 21° / 70° | 106 mm |
| September | 17° / 63° | 96 mm |
| October | 11° / 51° | 70 mm |
| November | 3° / 37° | 68 mm |
| December | -4° / 25° | 51 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Ogle County, IL
The most comfortable months to visit Ogle County, IL are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -12°C low). June is usually the wettest month.
Where to stay near Ogle County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.