About this dataset

Context

The dataset tabulates the Fairfax County population by age. The dataset can be utilized to understand the age distribution and demographics of Fairfax County.

Content

The dataset constitues the following three datasets

• Fairfax County, VA Age Group Population Dataset: A complete breakdown of Fairfax County age demographics from 0 to 85 years, distributed across 18 age groups
• Fairfax County, VA Age Cohorts Dataset: Children, Working Adults, and Seniors in Fairfax County - Population and Percentage Analysis
• Fairfax County, VA Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis

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/.

About this dataset

Context

The dataset tabulates the Fairfax city 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 Fairfax city 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 Fairfax city was 25,144, a 1.58% increase year-by-year from 2022. Previously, in 2022, Fairfax city population was 24,752, an increase of 1.64% compared to a population of 24,353 in 2021. Over the last 20 plus years, between 2000 and 2023, population of Fairfax city increased by 3,484. In this period, the peak population was 25,144 in the year 2023. 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).

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 Fairfax city is shown in this column.
• Year on Year Change: This column displays the change in Fairfax city 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 Fairfax city Population by Year. You can refer the same here

Graph and download economic data for Resident Population in Fairfax County, VA (VAFAIR5POP) from 1970 to 2023 about Fairfax County, VA; Washington; VA; residents; population; and USA.

About this dataset

Context

The dataset tabulates the Fairfax County population distribution across 18 age groups. It lists the population in each age group along with the percentage population relative of the total population for Fairfax County. The dataset can be utilized to understand the population distribution of Fairfax County by age. For example, using this dataset, we can identify the largest age group in Fairfax County.

Key observations

The largest age group in Fairfax County, VA was for the group of age 40 to 44 years years with a population of 83,411 (7.29%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Fairfax County, VA was the 85 years and over years with a population of 16,983 (1.48%). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Age groups:

• Under 5 years
• 5 to 9 years
• 10 to 14 years
• 15 to 19 years
• 20 to 24 years
• 25 to 29 years
• 30 to 34 years
• 35 to 39 years
• 40 to 44 years
• 45 to 49 years
• 50 to 54 years
• 55 to 59 years
• 60 to 64 years
• 65 to 69 years
• 70 to 74 years
• 75 to 79 years
• 80 to 84 years
• 85 years and over

Variables / Data Columns

• Age Group: This column displays the age group in consideration
• Population: The population for the specific age group in the Fairfax County is shown in this column.
• % of Total Population: This column displays the population of each age group as a proportion of Fairfax County total population. 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 Fairfax County Population by Age. You can refer the same here

Graph and download economic data for Population Estimate, Total, Not Hispanic or Latino, Two or More Races, Two Races Excluding Some Other Race, and Three or More Races (5-year estimate) in Fairfax County, VA (B03002011E051059) from 2009 to 2023 about Fairfax County, VA; Washington; VA; non-hispanic; estimate; persons; 5-year; population; and USA.

Graph and download economic data for Estimate of People Age 0-17 in Poverty in Fairfax City, VA (PEU18VA51600A647NCEN) from 1989 to 2023 about Fairfax City, VA; Washington; under 18 years; VA; child; poverty; persons; and USA.

Graph and download economic data for Employed Persons in Fairfax County, VA (LAUCN510590000000005A) from 1990 to 2023 about Fairfax County, VA; Washington; VA; household survey; employment; persons; and USA.

About this dataset

Context

The dataset tabulates the Fairfax city population by gender and age. The dataset can be utilized to understand the gender distribution and demographics of Fairfax city.

Content

The dataset constitues the following two datasets across these two themes

• Fairfax city, VA Population Breakdown by Gender
• Fairfax city, VA Population Breakdown by Gender and Age

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/.

Estimate, Median Age by Sex, Total Population (5-year estimate) in Fairfax County, VA was 38.90000 Years of Age in January of 2023, according to the United States Federal Reserve. Historically, Estimate, Median Age by Sex, Total Population (5-year estimate) in Fairfax County, VA reached a record high of 38.90000 in January of 2023 and a record low of 37.10000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimate, Median Age by Sex, Total Population (5-year estimate) in Fairfax County, VA - last updated from the United States Federal Reserve on March of 2025.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Edge refers to the linear topological primitives that make up MTDB. The All Lines Shapefile contains linear features such as roads, railroads, and hydrography. Additional attribute data associated with the linear features found in the All Lines Shapefile are available in relationship (.dbf) files that users must download separately. The All Lines Shapefile contains the geometry and attributes of each topological primitive edge. Each edge has a unique TIGER/Line identifier (TLID) value.

U.S. Census Bureau QuickFacts statistics for Fairfax County, Virginia. QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

Graph and download economic data for Population Estimate, Total (5-year estimate) in Fairfax County, VA (B03002001E051059) from 2009 to 2023 about Fairfax County, VA; Washington; VA; estimate; persons; 5-year; population; and USA.

About this dataset

Context

The dataset tabulates the data for the Fairfax County, VA population pyramid, which represents the Fairfax County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates. It lists the male and female population for each age group, along with the total population for those age groups. Higher numbers at the bottom of the table suggest population growth, whereas higher numbers at the top indicate declining birth rates. Furthermore, the dataset can be utilized to understand the youth dependency ratio, old-age dependency ratio, total dependency ratio, and potential support ratio.

Key observations

• Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Fairfax County, VA, is 28.6.
• Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Fairfax County, VA, is 21.9.
• Total dependency ratio for Fairfax County, VA is 50.5.
• Potential support ratio, which is the number of youth (working age population) per elderly, for Fairfax County, VA is 4.6.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

Age groups:

• Under 5 years
• 5 to 9 years
• 10 to 14 years
• 15 to 19 years
• 20 to 24 years
• 25 to 29 years
• 30 to 34 years
• 35 to 39 years
• 40 to 44 years
• 45 to 49 years
• 50 to 54 years
• 55 to 59 years
• 60 to 64 years
• 65 to 69 years
• 70 to 74 years
• 75 to 79 years
• 80 to 84 years
• 85 years and over

Variables / Data Columns

• Age Group: This column displays the age group for the Fairfax County population analysis. Total expected values are 18 and are define above in the age groups section.
• Population (Male): The male population in the Fairfax County for the selected age group is shown in the following column.
• Population (Female): The female population in the Fairfax County for the selected age group is shown in the following column.
• Total Population: The total population of the Fairfax County for the selected age group is shown in the following column.

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 Fairfax County Population by Age. You can refer the same here

18 to 34 years Poverty Rate Statistics for 2023. This is part of a larger dataset covering poverty in Fairfax County, Virginia by age, education, race, gender, work experience and more.

Graph and download economic data for Estimate of People of All Ages in Poverty in Fairfax County, VA (PEAAVA51059A647NCEN) from 1989 to 2023 about Fairfax County, VA; Washington; VA; child; poverty; persons; and USA.

About this dataset

Context

The dataset tabulates the Fairfax 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 Fairfax 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 Fairfax County was 1,138,331, a 0.29% decrease year-by-year from 2021. Previously, in 2021, Fairfax County population was 1,141,645, a decline of 0.60% compared to a population of 1,148,558 in 2020. Over the last 20 plus years, between 2000 and 2022, population of Fairfax County increased by 163,248. In this period, the peak population was 1,152,359 in the year 2019. 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 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 Fairfax County is shown in this column.
• Year on Year Change: This column displays the change in Fairfax 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 Fairfax County Population by Year. You can refer the same here

Graph and download economic data for Homeownership Rate (5-year estimate) for Fairfax County, VA (HOWNRATEACS051059) from 2009 to 2023 about Fairfax County, VA; Washington; homeownership; VA; housing; 5-year; rate; and USA.

U.S. Census Bureau QuickFacts statistics for Bull Run CDP (Fairfax County), Virginia. QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.