Monmouth County, NJ Population by Year

In 2023, the population of Monmouth County was 642,799, a 0.22% decrease year-by-year from 2022. Previously, in 2022, Monmouth County's population was 644,228, a decline of 0.35% compared to a population of 646,517 in 2021.
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Updated Aug 1, 2024

Monmouth County, NJ population between 2000 and 2023

Over the last 20 plus years, between 2000 and 2023, population of Monmouth County increased by 25,806. In this period, the peak population was 646,517 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 616,993 - -
2001 621,152 4,159 0.67%
2002 625,503 4,351 0.70%
2003 628,708 3,205 0.51%
2004 630,214 1,506 0.24%
2005 629,708 -506 -0.08%
2006 628,944 -764 -0.12%
2007 628,867 -77 -0.01%
2008 629,714 847 0.13%
2009 631,143 1,429 0.23%
2010 630,454 -689 -0.11%
2011 629,144 -1,310 -0.21%
2012 627,682 -1,462 -0.23%
2013 626,964 -718 -0.11%
2014 625,581 -1,383 -0.22%
2015 624,180 -1,401 -0.22%
2016 623,055 -1,125 -0.18%
2017 622,122 -933 -0.15%
2018 620,859 -1,263 -0.20%
2019 619,687 -1,172 -0.19%
2020 642,836 23,149 3.74%
2021 646,517 3,681 0.57%
2022 644,228 -2,289 -0.35%
2023 642,799 -1,429 -0.22%
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Monmouth County, NJ population from 2000 to 2023

From 2000 to 2010, Monmouth County's population increased by 13,461 (2.18%), 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, Monmouth County's population increased by 12,382 (1.96%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.18% .

After the COVID19 pandemic and, between the year 2020 and 2023, Monmouth County's population decreased by 37 (0.01%).For the same period, the rate of growth for the United States was 1.02%.

FIGURE 1

Monmouth County's population from 2000 to 2023.

The estimated population at the end of 2023 was 642,799.

Source: U.S. Census Bureau (Population Estimates Program).

Between the year 2000 and 2023, Monmouth County's population peaked in year 2021 at 646,517.

Between the year 2000 and 2023, Monmouth County's population was lowest in year 2000 at 616,993.

Monmouth County, NJ annual population growth rate

Between the years 2000 and 2023, i.e. 23 annual cycles, the population of Monmouth County grew year by year for 8 years and declined for 15 years.

From 2000 to 2023, Monmouth County had an average annual population growth rate of 0.18% per year. Overall the population grew 4.18% between 2000 and 2023.

FIGURE 2

Monmouth County annual population growth rate

The average annual growth rate from 2000 to 2023 was 0.18% per year.

Source: U.S. Census Bureau (Population Estimates Program).

From 2019 to 2020 Monmouth County population grew the most, with an increase of 23,149 people (a 3.74% year-on-year increase)..

From 2021 to 2022 Monmouth County population experienced the most significant decrease, with a decline of 2,289 people (a 0.35% year-on-year decline).

Things to know

Is Monmouth County, NJ population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Monmouth County's population decreased by 3,718 between 2021 and 2023. The decrease was 2,289 (increased) between 2021 and 2022; and decrease of 1,429 (0.22%) between 2022 and 2023.

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

Between 2013 and 2023, population of Monmouth County increased by 15,835 (2.53%). The population was highest at 646,517 in the year 2021 and lowest at 619,687 in the year 2019. Overall the average growth rate witnessed for the last 10 years was 0.26%.

References

Datasets

Explore datasets by year of publication.
2024
Monmouth County, NJ Annual Population and Growth Analysis Dataset: A Comprehensive Overview of Population Changes and Yearly Growth Rates in Monmouth County from 2000 to 2023 // 2024 Edition
Last updated July 30, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the Monmouth 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 Monmouth 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 2023, the population of Monmouth County was 642,799, a 0.22% decrease year-by-year from 2022. Previously, in 2022, Monmouth County population was 644,228, a decline of 0.35% compared to a population of 646,517 in 2021. Over the last 20 plus years, between 2000 and 2023, population of Monmouth County increased by 25,806. In this period, the peak population was 646,517 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).

Content

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

Data Coverage:

  • From 2000 to 2023

Variables / Data Columns

  • Year: This column displays the data year (Measured annually and for years 2000 to 2023)
  • Population: The population for the specific year for the Monmouth County is shown in this column.
  • Year on Year Change: This column displays the change in Monmouth 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 Monmouth 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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