Johnson County, IA Population by Year

In 2022, the population of Johnson County was 156,420, a 0.91% increase year-by-year from 2021. Previously, in 2021, Johnson County's population was 155,016, an increase of 1.29% compared to a population of 153,042 in 2020.
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Updated Sep 18, 2023

Johnson County, IA population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Johnson County increased by 44,938. In this period, the peak population was 156,420 in the year 2022. The numbers suggest that the population has not reached its peak yet and is showing a trend of further growth.

Year Population Year on Year Change Change in Percent
2000 111,482 - -
2001 113,650 2,168 1.94%
2002 115,118 1,468 1.29%
2003 116,896 1,778 1.54%
2004 119,167 2,271 1.94%
2005 120,620 1,453 1.22%
2006 122,570 1,950 1.62%
2007 124,914 2,344 1.91%
2008 127,496 2,582 2.07%
2009 130,254 2,758 2.16%
2010 131,344 1,090 0.84%
2011 134,125 2,781 2.12%
2012 137,180 3,055 2.28%
2013 140,266 3,086 2.25%
2014 142,874 2,608 1.86%
2015 145,114 2,240 1.57%
2016 147,167 2,053 1.41%
2017 149,703 2,536 1.72%
2018 151,003 1,300 0.87%
2019 152,480 1,477 0.98%
2020 153,042 562 0.37%
2021 155,016 1,974 1.29%
2022 156,420 1,404 0.91%
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Johnson County, IA population from 2000 to 2022

From 2000 to 2010, Johnson County's population increased by 19,862 (17.82%), 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, Johnson County's population increased by 21,698 (16.52%), 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 Johnson County's population from 2000 to 2022, with years on x-axis and population on y-axis
Johnson County's population from 2000 to 2022. The estimated population at the end of 2022 was 156,420. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Johnson County's population peaked in year 2022 at 156,420.

Between the year 2000 and 2022, Johnson County's population was lowest in year 2000 at 111,482.

Johnson County, IA annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Johnson County grew year by year for 22 years and declined for 0 years.

From 2000 to 2022, Johnson County had an average annual population growth rate of 1.83% per year. Overall the population grew 40.31% between 2000 and 2022.

The graph shows Johnson County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Johnson County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 1.83% per year. In the last two years, the population grew by 3,378. Source: U.S. Census Bureau (Population Estimates Program)

From 2012 to 2013, Johnson County's population grew the most with an increase of 3,086 (2.25%).

While from 2019 and 2020, Johnson County's population grew the least with a growth of 562 (0.37%).

Things to know

Is Johnson County, IA population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Johnson County's population increased by 3,378 between 2020 and 2022. The increase was 1,974 (1.29%) between 2020 and 2021; and increase of 1,404 (0.91%) between 2021 and 2022.

How has the population of Johnson County, IA changed in the last 10 years?

Between 2012 and 2022, population of Johnson County increased by 16,154 (11.52%). The population was highest at 156,420 in the year 2022 and lowest at 140,266 in the year 2013. Overall the average growth rate witnessed for the last 10 years was 1.32%.

References

Datasets

Explore datasets by year of publication.
2023
Johnson County, IA 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 Johnson 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 Johnson 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 Johnson County was 156,420, a 0.91% increase year-by-year from 2021. Previously, in 2021, Johnson County population was 155,016, an increase of 1.29% compared to a population of 153,042 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Johnson County increased by 44,938. In this period, the peak population was 156,420 in the year 2022. The numbers suggest that the population has not reached its peak yet and is showing a trend of further growth. Source: U.S. Census Bureau Population Estimates Program (PEP).

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