Boulder County, CO Population by Year

In 2022, the population of Boulder County was 327,468, a 0.12% increase year-by-year from 2021. Previously, in 2021, Boulder County's population was 327,075, a decline of 1.16% compared to a population of 330,922 in 2020.
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Updated Sep 18, 2023

Boulder County, CO population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Boulder County increased by 55,773. In this period, the peak population was 330,922 in the year 2020. 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 271,695 - -
2001 278,164 6,469 2.38%
2002 280,470 2,306 0.83%
2003 280,172 -298 -0.11%
2004 281,530 1,358 0.48%
2005 282,416 886 0.31%
2006 286,827 4,411 1.56%
2007 290,416 3,589 1.25%
2008 294,238 3,822 1.32%
2009 296,928 2,690 0.91%
2010 295,056 -1,872 -0.63%
2011 300,045 4,989 1.69%
2012 304,717 4,672 1.56%
2013 309,538 4,821 1.58%
2014 312,525 2,987 0.96%
2015 318,408 5,883 1.88%
2016 321,761 3,353 1.05%
2017 323,019 1,258 0.39%
2018 325,438 2,419 0.75%
2019 326,020 582 0.18%
2020 330,922 4,902 1.5%
2021 327,075 -3,847 -1.16%
2022 327,468 393 0.12%
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Boulder County, CO population from 2000 to 2022

From 2000 to 2010, Boulder County's population increased by 23,361 (8.60%), 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, Boulder County's population increased by 35,866 (12.16%), 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 Boulder County's population from 2000 to 2022, with years on x-axis and population on y-axis
Boulder County's population from 2000 to 2022. The estimated population at the end of 2022 was 327,468. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Boulder County's population peaked in year 2020 at 330,922.

Between the year 2000 and 2022, Boulder County's population was lowest in year 2000 at 271,695.

Boulder County, CO annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Boulder County grew year by year for 19 years and declined for 3 years.

From 2000 to 2022, Boulder County had an average annual population growth rate of 0.93% per year. Overall the population grew 20.53% between 2000 and 2022.

The graph shows Boulder County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Boulder County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 0.93% per year. In the last two years, the population declined by 3,454. Source: U.S. Census Bureau (Population Estimates Program)

From 2000 to 2001, Boulder County's population grew the most with an increase of 6,469 (2.38%).

While from 2020 and 2021, Boulder County's population declined the most with a negative growth of 3,847 (-1.16%).

Things to know

Is Boulder County, CO population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Boulder County's population decreased by 3,454 between 2020 and 2022. The decrease was 3,847 (1.16%) between 2020 and 2021; and increase of 393 (0.12%) between 2021 and 2022.

How has the population of Boulder County, CO changed in the last 10 years?

Between 2012 and 2022, population of Boulder County increased by 17,930 (5.79%). The population was highest at 330,922 in the year 2020 and lowest at 309,538 in the year 2013. Overall the average growth rate witnessed for the last 10 years was 0.73%.

References

Datasets

Explore datasets by year of publication.
2023
Boulder County, CO 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 Boulder 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 Boulder 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 Boulder County was 327,468, a 0.12% increase year-by-year from 2021. Previously, in 2021, Boulder County population was 327,075, a decline of 1.16% compared to a population of 330,922 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Boulder County increased by 55,773. In this period, the peak population was 330,922 in the year 2020. 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).

Boulder 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 Boulder County is shown in this column.
  • Year on Year Change: This column displays the change in Boulder 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 Boulder 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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Population of places that contain Boulder County

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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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