• county
  • FIPS 17141
  • Largest town: Rochelle

Ogle County, Illinois

Ogle County had 51,345 residents in the Census Vintage 2024 estimate, on 758.7 square miles of land. It ranks 28th of 102 in Illinois by population and 17th by land area.

Population
51,345
#28 of 102 in Illinois · #990 in US
Area
758.7 sq mi
#17 of 102 in Illinois · #1,154 in US
Density
68 / sq mi
#36 of 102 in Illinois · #1,204 in US
Median household income
$78,109
#17 of 102 in Illinois · #541 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Ogle County within Illinois. Pin: Springfield.

Measure from here

Tools and pages that start from Ogle County

Ogle County population, land area and income

Ogle County had 51,345 residents in the Census Vintage 2024 estimate, on 758.7 square miles of land. It ranks 28th of 102 in Illinois by population and 17th by land area. That works out to 67.7 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Illinois has 24,447 residents, so Ogle County is 2.1 times that size.

Its SAIPE 2023 median household income of $78,109 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

51,345

3144th1st

990th of 3,144 (US)

Land area

759 sq mi

3144th1st

1154th of 3,144 (US)

Density

67.7 / sq mi

3144th1st

1204th of 3,144 (US)

Median household income

$78,109

3143rd1st

541st of 3,143 (US)

Rank within Illinois (102)

Population

51,345

102nd1st

28th of 102 (IL)

Land area

759 sq mi

102nd1st

17th of 102 (IL)

Density

67.7 / sq mi

102nd1st

36th of 102 (IL)

Median household income

$78,109

102nd1st

17th of 102 (IL)

How Ogle County's population changed since 2020

Ogle County lost 417 residents between the July 2020 and July 2024 estimates, a drop of 0.8%. That ranks 26th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, Ogle County recorded 2,192 births and 2,451 deaths, a natural change of -259. Net international migration added +184 and net domestic migration, people moving to or from other US counties, came to -419. The largest single component was domestic migration, which removed 419 people.

51.8k202051.5k202151.4k202251.4k202351.3k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
2,192
Deaths
2,451
Net international migration
+184
Net domestic migration
-419
Change, July 2023 to July 2024
-46

Where Ogle County is

The Census internal point of Ogle County is at 42.041900, -89.320200. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Ogle County outlined. Dots are towns of 1,000+ people with residents in it.

Piatt County: -0.3%Hamilton County: -2.2%Williamson County: -0.1%Edgar County: -2.4%Macoupin County: -2.3%Marshall County: -1.3%Putnam County: +0.0%Richland County: -2.8%Washington County: -1.4%Lee County: -1.5%Douglas County: +0.2%Cook County: -1.6%Effingham County: -0.3%Edwards County: -3.6%Cass County: -2.0%Clay County: -3.4%Knox County: -2.2%LaSalle County: -0.9%Cumberland County: -1.3%Warren County: -3.7%Moultrie County: -0.9%Menard County: -2.5%Fayette County: -1.5%Boone County: -0.0%Lawrence County: -3.2%Marion County: -3.2%Champaign County: +3.0%Clark County: -2.4%Ford County: -0.4%Wayne County: -1.4%Logan County: -1.4%Grundy County: +2.5%Jasper County: -1.8%Crawford County: -1.3%McDonough County: -1.7%Clinton County: +0.5%Perry County: -3.0%Montgomery County: -2.2%Henry County: -2.0%Livingston County: -1.2%Scott County: -3.8%Alexander County: -11.2%Bureau County: -2.2%Brown County: +1.1%Mason County: -3.9%Calhoun County: -4.1%Greene County: -4.3%Coles County: -1.4%Kendall County: +8.2%Lake County: +0.7%Mercer County: -2.2%St. Clair County: -2.3%Wabash County: -3.0%Bond County: -1.7%DuPage County: +0.6%Gallatin County: -5.2%Stephenson County: -3.3%McHenry County: +1.9%White County: -3.0%Saline County: -3.9%Christian County: -2.2%Sangamon County: -1.0%Massac County: -3.6%Macon County: -2.9%Johnson County: -0.0%Jo Daviess County: -2.6%Peoria County: -1.0%DeKalb County: +1.0%Pope County: -1.5%De Witt County: -0.9%Schuyler County: -1.7%Fulton County: -3.1%Ogle County: -0.8%Jersey County: -1.6%Iroquois County: -3.3%Kankakee County: -0.9%Rock Island County: -1.1%Pulaski County: -5.8%Kane County: +0.9%Union County: -2.4%Whiteside County: -1.7%Woodford County: -0.3%Carroll County: -1.5%Adams County: -2.3%Hardin County: -2.6%Madison County: -1.0%Hancock County: -3.1%Monroe County: +0.0%Tazewell County: -1.1%Jackson County: -0.1%Vermilion County: -3.9%Randolph County: -0.6%McLean County: +0.5%Morgan County: -2.6%Shelby County: -1.7%Will County: +1.7%Winnebago County: -0.4%Jefferson County: -2.4%Stark County: -2.2%Henderson County: -4.5%Pike County: -2.6%Franklin County: -1.8%
Change 2020 to 2024
  1. < -3.0%
  2. < -2.2%
  3. < -1.4%
  4. < -0.3%
  5. ≥ -0.3%
no data

Orange pin: Ogle County internal point. Dark pin: Springfield.

Internal point

Decimal
42.041900, -89.320200
DMS
42°02'30.84"N 89°19'12.72"W
UTM
16N 307967.2E 4657032.9N
Geohash
dp2rpmrpb
Plus code
86JG2MRH+QW

Towns in Ogle County

10 incorporated places of 1,000+ people have residents in Ogle County, 28,071 people together, or 55% of the county. Each figure counts only the part of the town inside Ogle County; towns marked "part" extend into another county. The largest is Rochelle with 9,510.

  1. 01Rochelle9,510
  2. 02Byron3,764
  3. 03Oregon3,570
  4. 04Mount Morris2,792
  5. 05Davis Junction2,534
  6. 06Polo2,238
  7. 07Forreston1,403
  8. 08Hillcrest1,206
  9. 09Stillman Valley1,052
  10. 10Rockford (part)2
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Ogle County

The Census 2024 county adjacency file lists 7 neighbors for Ogle County. The most populous is Winnebago County, IL, with 283,790 residents. Distances run between Census internal points in a straight line.

Distance to Springfield and the nearest big city

Springfield is 157.2 miles S of Ogle County's internal point in a straight line. The nearest place of 100,000 or more is Rockford, IL (population 147,486), 19.9 miles away. The nearest place of 10,000 or more is Dixon, IL (population 15,156), 15.9 miles away.

Ogle County FIPS code

The FIPS code of Ogle County is 17141: state code 17 for Illinois plus county code 141. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $78,109.

Questions people ask

What is the population of Ogle County, Illinois?

The Census Vintage 2024 estimate for July 1, 2024 is 51,345. That is down 417 people (0.8%) from the July 2020 estimate of 51,762.

What is the FIPS code of Ogle County?

17141. The first two digits (17) are Illinois; the last three (141) identify the county.

What is the largest town in Ogle County?

Rochelle, with 9,510 residents inside Ogle County in 2024.

Which counties border Ogle County?

7 county-equivalents border it in the Census 2024 adjacency file: Winnebago County, IL; DeKalb County, IL; Whiteside County, IL; Boone County, IL; Stephenson County, IL; Lee County, IL; Carroll County, IL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.