Where does this data come from?

Name: Population — Loudoun, VA (persons)
Creator: U.S. Bureau of Economic Analysis (Regional Economic Accounts)

It is collected directly from U.S. Bureau of Economic Analysis (Regional Economic Accounts) and is available through the Makrognosis API under the code US-VA-51107.POP.A.NSA.

Population — Loudoun, VA (persons)

AnnualNot seasonally adjustedCode US-VA-51107.POP.A.NSA

Latest443,380 persons2024

Previous437,164 persons2023

Year ago437,164 persons2023

Population — Loudoun, VA (persons) was 443,380 persons in 2024, up 1.4% from 2023.

That is the highest reading since the series began in 1969.

Over the past ten years it has ranged from 362,280 persons (2014) to 443,380 persons (2024), averaging 409,527 persons.

Population — Loudoun, VA (persons) (persons), 1969 – 2024. Source: U.S. Bureau of Economic Analysis (Regional Economic Accounts).

Showing the full history (downsampled for display). Open the interactive chart to zoom and switch transforms.

Recent data

Period	Value
2024	443,380 persons
2023	437,164 persons
2022	432,897 persons
2021	428,827 persons
2020	422,723 persons
2019	414,764 persons
2018	405,868 persons
2017	397,107 persons
2016	385,677 persons
2015	374,115 persons
2014	362,280 persons
2013	349,963 persons
2012	337,876 persons
2011	326,342 persons
2010	315,483 persons
2009	303,661 persons
2008	292,570 persons
2007	279,704 persons
2006	267,194 persons
2005	254,909 persons
2004	238,299 persons
2003	220,366 persons
2002	203,543 persons
2001	189,910 persons

Last 24 observations. The full history (56 observations) is available through the API.

Get Population — Loudoun, VA (persons) in your code or spreadsheet

One guessable code, agency-direct, updated on release. Free tier available.

curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/US-VA-51107.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US-VA-51107.POP.A.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]

Get a free API key → · API docs

About this series

Latest observation	2024
First observation	1969
Observations	56
Frequency	Annual
Units	persons
Adjustment	Not seasonally adjusted
10-year high	443,380 persons (2024)
10-year low	362,280 persons (2014)
10-year average	409,527 persons
Source agency	U.S. Bureau of Economic Analysis (Regional Economic Accounts)
Makrognosis code	US-VA-51107.POP.A.NSA

This series is a labelled reference series (an official figure republished by an aggregator) rather than a first print from the agency itself.

Other United States indicators

Unemployment Rate: Loudoun County, VA (U)Employment: Loudoun County, VA (U)Labor Force: Loudoun County, VA (U)Per-Capita Personal Income — Loudoun, VA (USD)Personal Income — Loudoun, VA (USD thousands)Unemployment: Loudoun County, VA (U)

National figure

United States Population, midperiod

FAQ

Where does this data come from?: It is collected directly from U.S. Bureau of Economic Analysis (Regional Economic Accounts) and is available through the Makrognosis API under the code US-VA-51107.POP.A.NSA.

Last updated 2026-07-12. Source: U.S. Bureau of Economic Analysis (Regional Economic Accounts). Original title: “Population — Loudoun, VA (persons)”.