Winnebago County Population

1840–2026

284.38K

2026 projection

0.2% since 2020 (decrease)

050K100K150K200K250K300K1840186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Winnebago County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026284,383+7090.25%
2025283,674+7090.25%
2024282,965+1,2330.44%
2023281,732-350.01%
2022281,767-1,6690.59%
2021283,436-1,5030.53%
2020284,939+2,4740.88%
2019282,465-1,1230.40%
2018283,588-1,0700.38%
2017284,658-1,5130.53%

Showing 10 of 33 years.

Winnebago County Demographics

39.6median age

Median age

Female40.3 yrs
Male38.7 yrs

Adults

216,761
52,518 seniors (65+) · 24% of adults164,243 other adults

Sex

Female 51.1% · 144,704Male 48.9% · 138,588

Population by age

MaleFemale85+ years, male: 2,25285+ years, female: 4,68080–84 years, male: 2,75980–84 years, female: 2,96675–79 years, male: 4,15175–79 years, female: 5,03970–74 years, male: 6,26270–74 years, female: 7,10565–69 years, male: 8,26665–69 years, female: 9,03860–64 years, male: 9,17060–64 years, female: 9,46055–59 years, male: 9,06255–59 years, female: 9,51150–54 years, male: 8,77550–54 years, female: 8,87145–49 years, male: 7,96745–49 years, female: 8,14540–44 years, male: 8,72740–44 years, female: 8,05435–39 years, male: 7,86435–39 years, female: 9,28530–34 years, male: 8,81730–34 years, female: 9,27325–29 years, male: 8,68825–29 years, female: 9,04020–24 years, male: 8,55920–24 years, female: 8,50515–19 years, male: 9,29915–19 years, female: 9,00810–14 years, male: 10,07110–14 years, female: 8,8995–9 years, male: 9,1015–9 years, female: 9,3780–4 years, male: 8,7980–4 years, female: 8,44785+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 2,833 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Winnebago County Income

$65,837median household income

Median household income

$65,837

Half of households earn more, half earn less

Median earnings

$46,733

Typical yearly pay for a worker 25 or older.

Poverty rate

15.6%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Winnebago County Marital Status

45% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married45%47%43%
Never married34%37%32%
Divorced13%11%14%
Widowed6%3%9%
Separated1%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year