Lewis and Clark County, MT Population by Year

In 2022, the population of Lewis and Clark County was 73,832, a 1.83% increase year-by-year from 2021. Previously, in 2021, Lewis and Clark County's population was 72,503, an increase of 1.88% compared to a population of 71,168 in 2020.
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Updated Sep 18, 2023

Lewis and Clark County, MT population between 2000 and 2022

Over the last 20 plus years, between 2000 and 2022, population of Lewis and Clark County increased by 17,958. In this period, the peak population was 73,832 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 55,874 - -
2001 56,235 361 0.65%
2002 56,228 -7 -0.01%
2003 57,030 802 1.43%
2004 57,926 896 1.57%
2005 58,387 461 0.8%
2006 59,344 957 1.64%
2007 60,425 1,081 1.82%
2008 61,482 1,057 1.75%
2009 62,357 875 1.42%
2010 63,578 1,221 1.96%
2011 64,284 706 1.11%
2012 64,760 476 0.74%
2013 65,277 517 0.8%
2014 65,764 487 0.75%
2015 66,308 544 0.83%
2016 67,001 693 1.05%
2017 67,988 987 1.47%
2018 68,775 787 1.16%
2019 69,578 803 1.17%
2020 71,168 1,590 2.29%
2021 72,503 1,335 1.88%
2022 73,832 1,329 1.83%
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Lewis and Clark County, MT population from 2000 to 2022

From 2000 to 2010, Lewis and Clark County's population increased by 7,704 (13.79%), 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, Lewis and Clark County's population increased by 7,590 (11.94%), 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 Lewis and Clark County's population from 2000 to 2022, with years on x-axis and population on y-axis
Lewis and Clark County's population from 2000 to 2022. The estimated population at the end of 2022 was 73,832. Source: U.S. Census Bureau (Population Estimates Program)

Between the year 2000 and 2022, Lewis and Clark County's population peaked in year 2022 at 73,832.

Between the year 2000 and 2022, Lewis and Clark County's population was lowest in year 2000 at 55,874.

Lewis and Clark County, MT annual population growth rate

Between the years 2000 and 2022, i.e. 22 annual cycles, the population of Lewis and Clark County grew year by year for 21 years and declined for 1 years.

From 2000 to 2022, Lewis and Clark County had an average annual population growth rate of 1.46% per year. Overall the population grew 32.14% between 2000 and 2022.

The graph shows Lewis and Clark County's annual population change from 2000 to 2022, with years on x-axis and population annual growth on y-axis
Lewis and Clark County's annual population change from 2000 to 2022. The average annual growth rate from 2000 to 2022 was 1.46% per year. In the last two years, the population grew by 2,664. Source: U.S. Census Bureau (Population Estimates Program)

From 2019 to 2020, Lewis and Clark County's population grew the most with an increase of 1,590 (2.29%).

While from 2001 and 2002, Lewis and Clark County's population declined the most with a negative growth of 7 (-0.01%).

Things to know

Is Lewis and Clark County, MT population increasing or decreasing?

According to the latest data from U.S. Census Bureau's population estimates, Lewis and Clark County's population increased by 2,664 between 2020 and 2022. The increase was 1,335 (1.88%) between 2020 and 2021; and increase of 1,329 (1.83%) between 2021 and 2022.

How has the population of Lewis and Clark County, MT changed in the last 10 years?

Between 2012 and 2022, population of Lewis and Clark County increased by 8,555 (13.11%). The population was highest at 73,832 in the year 2022 and lowest at 65,277 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
Lewis and Clark County, MT 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 Lewis and Clark 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 Lewis and Clark 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 Lewis and Clark County was 73,832, a 1.83% increase year-by-year from 2021. Previously, in 2021, Lewis and Clark County population was 72,503, an increase of 1.88% compared to a population of 71,168 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Lewis and Clark County increased by 17,958. In this period, the peak population was 73,832 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).

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