Mercer County, IL Population by Year

In 2022, the population of Mercer County was 15,504, a 0.41% decrease year-by-year from 2021. Previously, in 2021, Mercer County's population was 15,568, a decline of 0.38% compared to a population of 15,627 in 2020.
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Updated Sep 18, 2023

Mercer County, IL population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Mercer County decreased by 1,394. In this period, the peak population was 16,898 in the year 2000. 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 16,898 - -
2001 16,869 -29 -0.17%
2002 16,863 -6 -0.04%
2003 16,766 -97 -0.58%
2004 16,719 -47 -0.28%
2005 16,603 -116 -0.69%
2006 16,533 -70 -0.42%
2007 16,476 -57 -0.34%
2008 16,510 34 0.21%
2009 16,280 -230 -1.39%
2010 16,410 130 0.8%
2011 16,320 -90 -0.55%
2012 16,165 -155 -0.95%
2013 16,077 -88 -0.54%
2014 15,902 -175 -1.09%
2015 15,748 -154 -0.97%
2016 15,611 -137 -0.87%
2017 15,618 7 0.04%
2018 15,572 -46 -0.29%
2019 15,490 -82 -0.53%
2020 15,627 137 0.88%
2021 15,568 -59 -0.38%
2022 15,504 -64 -0.41%
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Mercer County, IL population from 2000 to 2022

From 2000 to 2010, Mercer County's population decreased by 488 (2.89%), 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, Mercer County's population decreased by 783 (4.77%), 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 Mercer County's population from 2000 to 2022, with years on x-axis and population on y-axis
Mercer County's population from 2000 to 2022. The estimated population at the end of 2022 was 15,504. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Mercer County's population peaked in year 2000 at 16,898.

Between the year 2000 and 2022, Mercer County's population was lowest in year 2019 at 15,490.

Mercer County, IL annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Mercer County grew year by year for 4 years and declined for 18 years.

From 2000 to 2022, Mercer County had an average annual population growth rate of -0.37% per year. Overall the population shrank 8.25% between 2000 and 2022.

The graph shows Mercer County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Mercer County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was -0.37% per year. In the last two years, the population declined by 123. Source: U.S. Census Bureau (Population Estimates Program)

From 2019 to 2020, Mercer County's population grew the most with an increase of 137 (0.88%).

While from 2008 and 2009, Mercer County's population declined the most with a negative growth of 230 (-1.39%).

Things to know

Is Mercer County, IL population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Mercer County's population decreased by 123 between 2020 and 2022. The decrease was 59 (0.38%) between 2020 and 2021; and decrease of 64 (0.41%) between 2021 and 2022.

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

Between 2012 and 2022, population of Mercer County decreased by 573 (3.56%). The population was highest at 16,077 in the year 2013 and lowest at 15,490 in the year 2019. Overall the average growth rate witnessed for the last 10 years was -0.42%.

References

Datasets

Explore datasets by year of publication.
2023
Mercer 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 Mercer 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 Mercer 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 Mercer County was 15,504, a 0.41% decrease year-by-year from 2021. Previously, in 2021, Mercer County population was 15,568, a decline of 0.38% compared to a population of 15,627 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Mercer County decreased by 1,394. In this period, the peak population was 16,898 in the year 2000. 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).

Mercer 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 Mercer County is shown in this column.
  • Year on Year Change: This column displays the change in Mercer 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 Mercer 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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