Killingly, Connecticut Population by Year

In 2021, the population of Killingly town was 17,742, a 0.11% increase year-by-year from 2020. Previously, in 2020, Killingly town's population was 17,722, an increase of 2.17% compared to a population of 17,346 in 2019.
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Updated Sep 18, 2023

Killingly, Connecticut population between 2000 and 2021

Over the last 20 plus years, between 2000 and 2021, population of Killingly town increased by 1,241. In this period, the peak population was 17,915 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 16,501 - -
2001 16,573 72 0.44%
2002 16,731 158 0.95%
2003 16,963 232 1.39%
2004 17,195 232 1.37%
2005 17,361 166 0.97%
2006 17,592 231 1.33%
2007 17,779 187 1.06%
2008 17,904 125 0.7%
2009 17,915 11 0.06%
2010 17,383 -532 -2.97%
2011 17,370 -13 -0.07%
2012 17,310 -60 -0.35%
2013 17,267 -43 -0.25%
2014 17,191 -76 -0.44%
2015 17,149 -42 -0.24%
2016 17,115 -34 -0.2%
2017 17,204 89 0.52%
2018 17,339 135 0.78%
2019 17,346 7 0.04%
2020 17,722 376 2.17%
2021 17,742 20 0.11%
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Killingly, Connecticut population from 2000 to 2021

From 2000 to 2010, Killingly town's population increased by 882 (5.35%), 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, Killingly town's population increased by 339 (1.95%), 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 Killingly town's population from 2000 to 2021, with years on x-axis and population on y-axis
Killingly town's population from 2000 to 2021. The estimated population at the end of 2021 was 17,742. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2021, Killingly town's population peaked in year 2009 at 17,915.

Between the year 2000 and 2021, Killingly town's population was lowest in year 2000 at 16,501.

Killingly, Connecticut annual population growth rate

Between the years 2000 and 2021, i.e. 21 annual cycles, the population of Killingly town grew year by year for 14 years and declined for 7 years.

From 2000 to 2021, Killingly town had an average annual population growth rate of 0.36% per year. Overall the population grew 7.52% between 2000 and 2021.

The graph shows Killingly town's annual population change from 2000 to 2021, with years on x-axis and population annual growth on y-axis
Killingly town's annual population change from 2000 to 2021. The average annual growth rate from 2000 to 2021 was 0.36% per year. In the last two years, the population grew by 396. Source: U.S. Census Bureau (Population Estimates Program)

From 2019 to 2020, Killingly town's population grew the most with an increase of 376 (2.17%).

While from 2009 and 2010, Killingly town's population declined the most with a negative growth of 532 (-2.97%).

Things to know

Is Killingly, Connecticut population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Killingly town's population increased by 396 between 2019 and 2021. The increase was 376 (2.17%) between 2019 and 2020; and increase of 20 (0.11%) between 2020 and 2021.

How has the population of Killingly, Connecticut changed in the last 10 years?

Between 2011 and 2021, population of Killingly town increased by 432 (2.50%). The population was highest at 17,742 in the year 2021 and lowest at 17,115 in the year 2016. Overall the average growth rate witnessed for the last 10 years was 0.21%.

References

Datasets

Explore datasets by year of publication.
2023
Killingly, Connecticut 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 Killingly town 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 Killingly town 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 2021, the population of Killingly town was 17,742, a 0.11% increase year-by-year from 2020. Previously, in 2020, Killingly town population was 17,722, an increase of 2.17% compared to a population of 17,346 in 2019. Over the last 20 plus years, between 2000 and 2021, population of Killingly town increased by 1,241. In this period, the peak population was 17,915 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).

Killingly town 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 2021

Variables / Data Columns

  • Year: This column displays the data year (Measured annually and for years 2000 to 2021)
  • Population: The population for the specific year for the Killingly town is shown in this column.
  • Year on Year Change: This column displays the change in Killingly town 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 Killingly town 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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