McHenry County, IL Population by Year

In 2022, the population of McHenry County was 311,747, a 0.05% increase year-by-year from 2021. Previously, in 2021, McHenry County's population was 311,592, an increase of 0.55% compared to a population of 309,886 in 2020.
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Updated Sep 18, 2023

McHenry County, IL population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of McHenry County increased by 50,438. In this period, the peak population was 316,830 in the year 2009. 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 261,309 - -
2001 268,750 7,441 2.85%
2002 276,480 7,730 2.88%
2003 284,730 8,250 2.98%
2004 291,958 7,228 2.54%
2005 299,228 7,270 2.49%
2006 306,553 7,325 2.45%
2007 312,047 5,494 1.79%
2008 315,117 3,070 0.98%
2009 316,830 1,713 0.54%
2010 309,121 -7,709 -2.43%
2011 308,519 -602 -0.19%
2012 308,248 -271 -0.09%
2013 307,629 -619 -0.2%
2014 307,425 -204 -0.07%
2015 307,595 170 0.06%
2016 307,142 -453 -0.15%
2017 307,842 700 0.23%
2018 308,145 303 0.1%
2019 307,439 -706 -0.23%
2020 309,886 2,447 0.8%
2021 311,592 1,706 0.55%
2022 311,747 155 0.05%
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McHenry County, IL population from 2000 to 2022

From 2000 to 2010, McHenry County's population increased by 47,812 (18.30%), 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, McHenry County's population increased by 765 (0.25%), 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 McHenry County's population from 2000 to 2022, with years on x-axis and population on y-axis
McHenry County's population from 2000 to 2022. The estimated population at the end of 2022 was 311,747. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, McHenry County's population peaked in year 2009 at 316,830.

Between the year 2000 and 2022, McHenry County's population was lowest in year 2000 at 261,309.

McHenry County, IL annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of McHenry County grew year by year for 15 years and declined for 7 years.

From 2000 to 2022, McHenry County had an average annual population growth rate of 0.88% per year. Overall the population grew 19.30% between 2000 and 2022.

The graph shows McHenry County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
McHenry County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 0.88% per year. In the last two years, the population grew by 1,861. Source: U.S. Census Bureau (Population Estimates Program)

From 2002 to 2003, McHenry County's population grew the most with an increase of 8,250 (2.98%).

While from 2009 and 2010, McHenry County's population declined the most with a negative growth of 7,709 (-2.43%).

Things to know

Is McHenry County, IL population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, McHenry County's population increased by 1,861 between 2020 and 2022. The increase was 1,706 (0.55%) between 2020 and 2021; and increase of 155 (0.05%) between 2021 and 2022.

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

Between 2012 and 2022, population of McHenry County increased by 4,118 (1.34%). The population was highest at 311,747 in the year 2022 and lowest at 307,142 in the year 2016. Overall the average growth rate witnessed for the last 10 years was 0.11%.

References

Datasets

Explore datasets by year of publication.
2023
McHenry 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 McHenry 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 McHenry 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 McHenry County was 311,747, a 0.05% increase year-by-year from 2021. Previously, in 2021, McHenry County population was 311,592, an increase of 0.55% compared to a population of 309,886 in 2020. Over the last 20 plus years, between 2000 and 2022, population of McHenry County increased by 50,438. In this period, the peak population was 316,830 in the year 2009. 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).

McHenry 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 McHenry County is shown in this column.
  • Year on Year Change: This column displays the change in McHenry 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 McHenry 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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Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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