COUNTY · 2000 CENSUS

Winnebago County

Illinois · 278,418 residents · 513.05 sq mi

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The short version

Winnebago County has roughly average household income, with a median household income of $43,886. Population has held roughly steady since 1990. Median home value has risen by half since 1990, reaching $90,900.

At a glance

Average income

near the US median

US median: $42,589

Mid-age

median age 35.9

US median: 35.2

Less educated

19% hold a bachelor's degree

US average: 24%

Stable housing

home values roughly flat, inflation adjusted

US median home: $120,530

Section 01

Population & growth

Total population

278,418

+10%since 1990

from 252,913 in 1990

1990 – 2025

Population density

543 / sq mi

+10%since 1990

from 493 / sq mi in 1990

US average: 242

Median age

35.9

+7%since 1990

from 33.5 in 1990

US average: 35.2

Population, 1990 – 2024

2024283K

Section 02

Income & economy

Median household income

$43,886

+6%inflation adjusted, since 1990

from $31,336 in 1990

US average: $42,589

1990 – 2024

Per capita income

$21,194

+46%since 1990

from $14,516 in 1990

US average: $21,522

Poverty rate

9.6%

−0.5 ptssince 1990

from 10.1% in 1990

US average: 12.4%

Section 03

Housing

Median home value

$90,900

+15%inflation adjusted, since 1990

from $59,900 in 1990

US average: $120,530

1990 – 2024

Median gross rent

$514

+3%inflation adjusted, since 1990

from $377 in 1990

US average: $602

Owner-occupied

70.0%

+2.0 ptssince 1990

from 68.0% in 1990

30.0% rent

Afford Score

2.1

+8%since 1990

from 1.9 in 1990

1990 – 2024

RELATED:See current rent listings in Winnebago County on RentDataNow

Section 04

Race & ethnicity

1990

White, non-Hispanic87.9%(222,425)

Black9.1%(23,020)

Hispanic / Latino2.8%(7,050)

Asian1.3%(3,188)

Diversity Score32.4%(81,864)

2000

White, non-Hispanic79.3%(220,817)

Black10.4%(29,038)

Hispanic / Latino6.9%(19,206)

Asian1.7%(4,719)

Diversity Score41.6%(115,895)

Diversity Score

+29%since 1990

from 32 in 1990

1990 – 2024

Section 05

Education

Bachelor's degree or higher

19.4%

+2.7 ptssince 1990

from 16.7% in 1990

US average: 24.4%

High school or higher

81.4%

+5.1 ptssince 1990

from 76.3% in 1990

US average: 80.3%

Graduate degree

6.6%

+1.4 ptssince 1990

from 5.2% in 1990

US average: 8.8%

Section 06

Commute & transportation

Average commute

13.3 min

−22%since 1990

from 17.0 min in 1990

US average: 17.6

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Winnebago County

Head to head

Compare Winnebago County to nearby counties

WINNEBAGO COUNTY VS

Boone County

Income$84,571+93%

Home value$216,900+139%

Population53,568−81%

SEE FULL COMPARISON →

WINNEBAGO COUNTY VS

Ogle County

Income$82,132+87%

Home value$189,200+108%

Population51,399−82%

SEE FULL COMPARISON →

WINNEBAGO COUNTY VS

Rock County

Income$75,673+72%

Home value$231,600+155%

Population166,472−41%

SEE FULL COMPARISON →

WINNEBAGO COUNTY VS

Stephenson County

Income$64,043+46%

Home value$134,900+48%

Population43,220−85%

SEE FULL COMPARISON →

Frequently asked

How many people live in Winnebago County, Illinois?

Winnebago County, Illinois has about 278,418 residents according to the 2000 Census.

What is the median household income in Winnebago County, Illinois?

The typical household in Winnebago County, Illinois earns about $43,886 a year. Half of households make more than that, and half make less.

Is Winnebago County, Illinois expensive?

In Winnebago County, Illinois, the median home is worth about $90,900, and the typical rent is about $514 a month.

How educated are people in Winnebago County, Illinois?

About 19.4% of adults age 25 and over in Winnebago County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Winnebago County, Illinois?

About 9.6% of people in Winnebago County, Illinois live below the federal poverty line.

Has Winnebago County, Illinois grown since 1990?

Yes, Winnebago County, Illinois has grown since 1990. The population has added about 25,505 residents, a change of about 10 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →