County · Illinois

Ogle County, Illinois

Ogle County, Illinois. Ogle County had 51,399 residents in 2025 by the Census Bureau's estimate, down 0.9% since 2020, in line with Illinois (−0.8%). It holds 43 places (14 cities, villages and boroughs, 24 towns and townships and 5 census-designated) and 13 census tracts. GEOID 17141.

Ogle County is the county of the Rochelle, IL micropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

51,399

Census Bureau estimate (no margin published)
2020 Census count: 51,788 · ACS 2020-2024: 51,495

Median household income

$82,132

±$3,131 (90% margin)
Illinois: $83,390

Median home value

$189,200

±$8,262 (90% margin)
Illinois: $263,300

Median gross rent

$936

±$37 (90% margin)
Illinois: $1,274

How many people live in Ogle County, and is it growing?

The 2020 Census counted 51,788 residents in Ogle County. The Census Bureau estimates 51,399 for July 1, 2025, down 0.9% since 2020, in line with Illinois (−0.8%). The 2020-2024 American Community Survey puts the population at 51,495 over 759 square miles of land.

July 2020→2021 −205 (51,560)
2021→2022 −119 (51,441)
2022→2023 −72 (51,369)
2023→2024 −95 (51,274)
2024→2025 +125 (51,399)

Ogle County in Illinois. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Ogle County	Illinois	Change since 2015-2019
Total population	51,495	12,694,798	+470
Households	20,821±310	5,036,449	no clear change
Average household size	2.45±0.04	2.46	+0.05
Housing units	22,682±81	5,457,452	no clear change

Ogle County's population since 2000

From 51,032 in 2000 to 51,399 in 2025: up 0.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 51,032
2005 (estimate) 52,893
2010 Census 53,497
2015 (estimate) 51,572
2020 Census 51,788
2025 (estimate) 51,399

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Ogle County?

Ogle County holds 43 places: 14 cities, villages and boroughs (incorporated places), 24 towns and townships (county subdivisions with their own government) and 5 census-designated places. The largest is Flagg Township with 13,335 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Ogle County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Flagg Township	township	13,296	13,287±27	$74,423	$169,000	7.1%	100%
Rochelle	city	9,446	9,529±110	$66,307	$164,300	7.9%	100%
Byron Township	township	6,491	6,410±22	$90,069	$234,500	6.1%	100%
Oregon-Nashua Township	township	4,762	4,769±44	$80,769	$147,300	14.1%	100%
Marion Township, Ogle County	township	3,887	3,884±22	$104,924	$223,100	5.2%	100%
Byron	city	3,784	3,743±38	$78,852	$198,700	10.5%	100%
Mount Morris Township	township	3,738	3,669±21	$49,531	$121,100	12.6%	100%
Oregon	city	3,604	3,851±249	$71,841	$142,600	14.8%	100%
Scott Township, Ogle County	township	3,314	3,305±20	$109,500	$207,300	8.2%	100%
Mount Morris	village	2,861	2,726±335	$45,726	$121,800	13.8%	100%
Buffalo Township	township	2,692	2,648±19	$63,080	$116,800	19.3%	100%
Davis Junction	village	2,512	2,757±202	$107,833	$205,500	8.7%	100%
Polo	city	2,291	2,495±86	$63,080	$109,600	20.5%	100%
Forreston Township	township	2,005	1,907±274	$72,061	$156,300	5.5%	100%
Rockvale TownshipGEOID 1714165182	township	1,735	1,649±343	$125,156	$234,200	2.5%	100%
Monroe Township	township	1,456	1,335±219	$93,056	$219,300	1.3%	100%
Forreston	village	1,435	1,360±215	$70,676	$129,900	5.7%	100%
Hillcrest	village	1,224	1,824±354	$80,568	$164,200	9.6%	100%
Leaf River Township	township	1,098	1,125±267	$85,833	$178,100	5.4%	100%
Stillman Valley	village	1,075	1,260±228	$87,833	$175,800	8.6%	100%
Dement Township	township	962	903±180	$62,986	$184,900	14.4%	100%
Pine Rock TownshipGEOID 1714159975	township	947	696±217	$80,000	$192,200	5.0%	100%
Taylor TownshipGEOID 1714174535	township	936	832±184	$109,893	$234,000	3.7%	100%
Lost NationGEOID 1744836	CDP	714	714±176	$108,964	$236,300	4.3%	100%
Pine Creek TownshipGEOID 1714159897	township	712	830±233	$110,000	$274,400	4.9%	100%
White Rock Township	township	711	1,028±321	$87,917	$235,500	4.3%	100%
Grand Detour TownshipGEOID 1714130718	township	677	419±175	$75,547	$201,800	2.1%	100%
CrestonGEOID 1717471	village	627	550±152	$66,667	$167,400	9.1%	100%
Lynnville Township	township	552	655±243	$91,607	$190,200	7.5%	100%
Maryland TownshipGEOID 1714147358	township	482	440±155	$100,469	$246,400	1.6%	100%
Leaf River	village	432	477±125	$79,500	$94,000	12.8%	100%
Grand DetourGEOID 1730705	CDP	424	297±168	$76,406	$191,700	3.0%	100%
Monroe Center	village	411	369±75	$93,056	$164,700	4.9%	100%
Lincoln TownshipGEOID 1714143549	township	411	465±316	$88,229	$305,600	2.8%	100%
Woosung TownshipGEOID 1714183492	township	363	546±317	$56,591	$243,800	51.3%	100%
Brookville TownshipGEOID 1714108784	township	222	156±89	$59,545	not published	0.0%	100%
Eagle Point TownshipGEOID 1714121501	township	183	273±116	$88,804	$216,100	0.0%	100%
BaileyvilleGEOID 1703337	CDP	187	99±64	$21,007	$822,900	3.0%	90%
Lafayette Township, Ogle CountyGEOID 1714140650	township	156	264±167	$195,625	$287,500	0.0%	100%
HolcombGEOID 1735463	CDP	149	152±64	$68,125	$130,600	21.7%	100%
KingsGEOID 1739987	CDP	146	332±254	$68,750	$176,400	0.0%	100%
AdelineGEOID 1700295	village	78	82±34	$65,313	$97,500	4.9%	100%
Rockford	city	148,655	147,521±271	$54,752	$129,000	21.3%	0%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Ogle County?

The median resident of Ogle County is 42.2 years old; 22.2% are under 18 and 20.0% are 65 or older. The largest group is non-Hispanic white residents at 83.0%, then Hispanic or Latino residents (of any race) at 11.9%. 4.5% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Ogle County	Illinois	Change since 2015-2019
Median age	42.2±0.4	39.0	no clear change
Under 18 years	22.2%±0.1 pts	21.8%	–
65 years and over	20.0%±0.2 pts	17.0%	–
Hispanic or Latino (any race)	11.9%	18.8%	+1.8 pts
White alone, not Hispanic	83.0%±0.5 pts	58.1%	−3.8 pts
Black or African American alone, not Hispanic	1.2%±0.3 pts	13.3%	no clear change
Asian alone, not Hispanic	0.6%±0.1 pts	5.9%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.0%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	2.9%±0.6 pts	3.4%	–
Some other race alone, not Hispanic	0.3%±0.2 pts	0.4%	–
Born outside the United States	4.5%±0.5 pts	14.7%	no clear change
Speak a language other than English at home (age 5+)	8.6%±0.8 pts	24.0%	–
Civilian veterans (age 18+)	8.7%±1.0 pts	4.8%	–
With a disability	14.8%±1.0 pts	12.1%	–
No health insurance coverage	4.1%±0.7 pts	6.9%	no clear change
High school graduate or higher (age 25+)	91.1%±1.0 pts	90.5%	–
Bachelor's degree or higher (age 25+)	24.3%±1.6 pts	37.8%	+2.9 pts
Graduate or professional degree (age 25+)	8.1%±0.9 pts	15.3%	–
Moved from another state in the past year	1.1%±0.5 pts	1.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Ogle County earn?

Half of Ogle County's 20,821 households earn less than $82,132 a year (±$3,131), against $83,390 in Illinois. In 2015-2019 the median was $75,055 in 2024 dollars, so it rose by $7,077 after inflation. 8.4% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Ogle County	Illinois	Change since 2015-2019
Median household income	$82,132±$3,131	$83,390	+$7,077
Mean household income	$98,173±$3,890	$115,638	–
Per capita income	$40,038±$1,540	$46,406	no clear change
People below the poverty line	8.4%±1.5 pts	11.8%	no clear change
Children under 18 below the poverty line	11.5%±3.8 pts	15.1%	no clear change
Households receiving SNAP	10.7%±1.5 pts	13.8%	–
Households with a broadband subscription	88.4%±1.6 pts	90.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Ogle County?

Owners occupy 75.4% of Ogle County's occupied homes and renters 24.6%. The median owner-occupied home is valued at $189,200 by its owner (±$8,262). The median renter pays $936 a month including utilities, and 29.0% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Ogle County	Illinois	Change since 2015-2019
Median home value (owner-occupied)	$189,200±$8,262	$263,300	no clear change
Median gross rent	$936±$37	$1,274	no clear change
Renters paying 35% or more of income on rent	29.0%±5.9 pts	39.0%	no clear change
Median monthly owner costs, with a mortgage	$1,533±$51	$1,987	–
Owner-occupied homes	75.4%±1.8 pts	67.1%	no clear change
Housing units	22,682±81	5,457,452	no clear change
Homeowner vacancy rate	1.2%±0.6 pts	1.0%	–
Rental vacancy rate	3.0%±1.5 pts	5.0%	–
Single-family detached homes	82.6%±1.9 pts	58.2%	–
Mobile homes	2.5%±0.7 pts	2.3%	–
Built 2020 or later	0.9%±0.5 pts	0.7%	–
Built 1939 or earlier	20.1%±1.4 pts	20.2%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Ogle County building?

Builders took permits for 87 new housing units across Ogle County in 2025 (81 single-family), 1.7 per 1,000 residents.

2019 41 units
2020 42 units
2021 32 units
2022 31 units
2023 128 units
2024 50 units
2025 87 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Ogle County get to work?

80.6% of Ogle County's workers drive alone and 8.0% work from home. The average trip to work takes 26.0 minutes. The unemployment rate in 2020-2024 averaged 5.0%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Ogle County	Illinois	Change since 2015-2019
In the labor force (age 16+)	61.6%±1.7 pts	65.0%	–
Unemployment rate	5.0%±0.9 pts	5.8%	no clear change
Drove alone to work	80.6%±1.8 pts	65.9%	–
Carpooled	8.3%±1.3 pts	7.8%	–
Public transportation	0.3%±0.2 pts	5.8%	–
Walked	1.6%±0.5 pts	2.8%	–
Worked from home	8.0%±1.1 pts	15.9%	+2.9 pts
Mean travel time to work	26.0 min±1.2	27.8 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Ogle County's census tracts?

Ogle County is divided into 13 census tracts. Among those with a reliable estimate, median household income runs from $63,701 (Tract 9609) to $127,801 (Tract 9613.02).

Census tracts of Ogle County, ACS 2020-2024 5-year estimates; sort by any column

Tract 960717141960700	Leaf River (14%)	4,328	4,158±315	$97,399	$253,800	$1,281	1.8%
Tract 960817141960800	Forreston (28%)	3,412	3,263±346	$78,854	$178,700	$894	3.8%
Tract 960917141960900	Mount Morris (45%)	4,604	4,542±370	$63,701	$135,300	$578	10.2%
Tract 9610.0117141961001	Monroe Center (12%)	3,190	3,223±414	$80,250	$180,700	$854	8.5%
Tract 9610.0217141961002	Stillman Valley (32%)	3,664	3,854±266	$104,650	$202,000	$1,208	5.6%
Tract 961117141961100	Rochelle (51%)	3,791	3,910±368	$64,559	$162,800	$946	8.2%
Tract 961217141961200	Rochelle (50%)	7,183	7,187±423	$86,300	$189,900	$1,118	6.9%
Tract 9613.0117141961301	Lost Nation (18%)	2,483	2,204±252	$104,375	$236,900	$906	5.3%
Tract 9613.0217141961302	Stillman Valley (6%)	2,588	2,633±281	$127,801	$266,000	$777	0.9%
Tract 961417141961400	Oregon (86%)	3,975	4,169±237	$71,000	$143,500	$915	15.0%
Tract 961517141961500	Polo (40%)	4,310	4,519±338	$68,872	$174,400	$905	18.6%
Tract 961617141961600	Rochelle (73%)	3,295	3,179±349	$64,574	$141,500	$963	7.7%
Tract 961717141961700	Byron (61%)	4,965	4,654±230	$81,625	$209,600	$929	10.7%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Ogle County compare with Illinois's other counties?

Ogle County's rank among Illinois's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	28th of 102
Growth 2020-2025	25th of 102
Residents per square mile	36th of 102
Median household income	16th of 102
Median home value	20th of 102
Median gross rent	21st of 102
Poverty rate	87th of 102
Bachelor's degree or higher	34th of 102
Median age	54th of 102

Every county in Illinois

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Ogle County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.