Winnebago County, IL Population by Year

In 2022, the population of Winnebago County was 282,188, a 0.48% decrease year-by-year from 2021. Previously, in 2021, Winnebago County's population was 283,559, a decline of 0.48% compared to a population of 284,928 in 2020.
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Updated Sep 18, 2023

Winnebago County, IL population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Winnebago County increased by 3,154. In this period, the peak population was 296,283 in the year 2008. The numbers suggest that the population has already reached its peak and is showing a trend of decline.

Year Population Year on Year Change Change in Percent
2000 279,034 - -
2001 280,194 1,160 0.42%
2002 281,454 1,260 0.45%
2003 283,606 2,152 0.76%
2004 284,779 1,173 0.41%
2005 286,685 1,906 0.67%
2006 289,908 3,223 1.12%
2007 294,548 4,640 1.6%
2008 296,283 1,735 0.59%
2009 296,147 -136 -0.05%
2010 295,090 -1,057 -0.36%
2011 293,667 -1,423 -0.48%
2012 292,128 -1,539 -0.52%
2013 291,006 -1,122 -0.38%
2014 288,770 -2,236 -0.77%
2015 287,237 -1,533 -0.53%
2016 286,171 -1,066 -0.37%
2017 284,658 -1,513 -0.53%
2018 283,588 -1,070 -0.38%
2019 282,465 -1,123 -0.4%
2020 284,928 2,463 0.87%
2021 283,559 -1,369 -0.48%
2022 282,188 -1,371 -0.48%
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Winnebago County, IL population from 2000 to 2022

From 2000 to 2010, Winnebago County's population increased by 16,056 (5.75%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 9.63%.

From 2010 to 2020, Winnebago County's population decreased by 10,162 (3.44%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.

The graph shows Winnebago County's population from 2000 to 2022, with years on x-axis and population on y-axis
Winnebago County's population from 2000 to 2022. The estimated population at the end of 2022 was 282,188. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Winnebago County's population peaked in year 2008 at 296,283.

Between the year 2000 and 2022, Winnebago County's population was lowest in year 2000 at 279,034.

Winnebago County, IL annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Winnebago County grew year by year for 9 years and declined for 13 years.

From 2000 to 2022, Winnebago County had an average annual population growth rate of 0.05% per year. Overall the population grew 1.13% between 2000 and 2022.

The graph shows Winnebago County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Winnebago County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 0.05% per year. In the last two years, the population declined by 2,740. Source: U.S. Census Bureau (Population Estimates Program)

From 2006 to 2007, Winnebago County's population grew the most with an increase of 4,640 (1.60%).

While from 2013 and 2014, Winnebago County's population declined the most with a negative growth of 2,236 (-0.77%).

Things to know

Is Winnebago County, IL population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Winnebago County's population decreased by 2,740 between 2020 and 2022. The decrease was 1,369 (0.48%) between 2020 and 2021; and decrease of 1,371 (0.48%) between 2021 and 2022.

How has the population of Winnebago County, IL changed in the last 10 years?

Between 2012 and 2022, population of Winnebago County decreased by 8,818 (3.03%). The population was highest at 291,006 in the year 2013 and lowest at 282,188 in the year 2022. Overall the average growth rate witnessed for the last 10 years was -0.34%.

References

Datasets

Explore datasets by year of publication.
2023
Winnebago County, IL Population Dataset: Yearly Figures, Population Change, and Percent Change Analysis
Last updated September 18, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Winnebago County population over the last 20 plus years. It lists the population for each year, along with the year on year change in population, as well as the change in percentage terms for each year. The dataset can be utilized to understand the population change of Winnebago County across the last two decades. For example, using this dataset, we can identify if the population is declining or increasing. If there is a change, when the population peaked, or if it is still growing and has not reached its peak. We can also compare the trend with the overall trend of United States population over the same period of time.

Key observations

In 2022, the population of Winnebago County was 282,188, a 0.48% decrease year-by-year from 2021. Previously, in 2021, Winnebago County population was 283,559, a decline of 0.48% compared to a population of 284,928 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Winnebago County increased by 3,154. In this period, the peak population was 296,283 in the year 2008. The numbers suggest that the population has already reached its peak and is showing a trend of decline. Source: U.S. Census Bureau Population Estimates Program (PEP).

Winnebago County population by year

Content

When available, the data consists of estimates from the U.S. Census Bureau Population Estimates Program (PEP).

Data Coverage:

  • From 2000 to 2022

Variables / Data Columns

  • Year: This column displays the data year (Measured annually and for years 2000 to 2022)
  • Population: The population for the specific year for the Winnebago County is shown in this column.
  • Year on Year Change: This column displays the change in Winnebago County population for each year compared to the previous year.
  • Change in Percent: This column displays the year on year change as a percentage. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Winnebago County Population by Year. You can refer the same here

If you're looking for datasets from another year, please feel free to contact us at research@neilsberg.com and we'll be happy to assist you further.

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