Middlesex County, NJ Population by Year

In 2022, the population of Middlesex County was 861,418, a 0.11% decrease year-by-year from 2021. Previously, in 2021, Middlesex County's population was 862,328, an increase of 0.12% compared to a population of 861,314 in 2020.
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Updated Sep 18, 2023

Middlesex County, NJ population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Middlesex County increased by 108,712. In this period, the peak population was 862,328 in the year 2021. 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 752,706 - -
2001 760,731 8,025 1.07%
2002 767,291 6,560 0.86%
2003 772,929 5,638 0.73%
2004 777,442 4,513 0.58%
2005 781,985 4,543 0.58%
2006 780,201 -1,784 -0.23%
2007 784,149 3,948 0.51%
2008 789,758 5,609 0.72%
2009 794,252 4,494 0.57%
2010 810,813 16,561 2.09%
2011 815,253 4,440 0.55%
2012 819,389 4,136 0.51%
2013 821,811 2,422 0.3%
2014 824,331 2,520 0.31%
2015 825,471 1,140 0.14%
2016 825,298 -173 -0.02%
2017 826,972 1,674 0.2%
2018 825,677 -1,295 -0.16%
2019 824,394 -1,283 -0.16%
2020 861,314 36,920 4.48%
2021 862,328 1,014 0.12%
2022 861,418 -910 -0.11%
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Middlesex County, NJ population from 2000 to 2022

From 2000 to 2010, Middlesex County's population increased by 58,107 (7.72%), 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, Middlesex County's population increased by 50,501 (6.23%), 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 Middlesex County's population from 2000 to 2022, with years on x-axis and population on y-axis
Middlesex County's population from 2000 to 2022. The estimated population at the end of 2022 was 861,418. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Middlesex County's population peaked in year 2021 at 862,328.

Between the year 2000 and 2022, Middlesex County's population was lowest in year 2000 at 752,706.

Middlesex County, NJ annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Middlesex County grew year by year for 17 years and declined for 5 years.

From 2000 to 2022, Middlesex County had an average annual population growth rate of 0.66% per year. Overall the population grew 14.44% between 2000 and 2022.

The graph shows Middlesex County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Middlesex County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 0.66% per year. In the last two years, the population grew by 104. Source: U.S. Census Bureau (Population Estimates Program)

From 2019 to 2020, Middlesex County's population grew the most with an increase of 36,920 (4.48%).

While from 2005 and 2006, Middlesex County's population declined the most with a negative growth of 1,784 (-0.23%).

Things to know

Is Middlesex County, NJ population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Middlesex County's population increased by 104 between 2020 and 2022. The increase was 1,014 (0.12%) between 2020 and 2021; and decrease of 910 (0.11%) between 2021 and 2022.

How has the population of Middlesex County, NJ changed in the last 10 years?

Between 2012 and 2022, population of Middlesex County increased by 39,607 (4.82%). The population was highest at 862,328 in the year 2021 and lowest at 821,811 in the year 2013. Overall the average growth rate witnessed for the last 10 years was 0.51%.

References

Datasets

Explore datasets by year of publication.
2023
Middlesex County, NJ 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 Middlesex 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 Middlesex 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 Middlesex County was 861,418, a 0.11% decrease year-by-year from 2021. Previously, in 2021, Middlesex County population was 862,328, an increase of 0.12% compared to a population of 861,314 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Middlesex County increased by 108,712. In this period, the peak population was 862,328 in the year 2021. 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).

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