Loudoun County Population 2018

Loudoun County's estimated population is 398,080 with a growth rate of 3.06% in the past year according to the most recent United States census data. Loudoun County is the 4th largest county in Virginia.

Year Population Growth Growth Rate
2017398,08011,8013.06%
2016386,27911,5823.09%
2015374,69711,8233.26%
2014362,87412,0163.42%
2013350,85812,5833.72%
2012338,27511,3793.48%
2011326,89611,2963.58%
2010315,600229,471266.43%
199086,12928,70249.98%
198057,42720,27754.58%
197037,15012,60151.33%
196024,5493,40216.09%
195021,1478564.22%
194020,2914392.21%
193019,852-725-3.52%
192020,577-590-2.79%
191021,167-781-3.56%
190021,948-1,326-5.70%
189023,274-360-1.52%
188023,6342,70512.92%
187020,929-845-3.88%
186021,774-305-1.38%
185022,0791,6488.07%
184020,431-1,508-6.87%
183021,939-763-3.36%
182022,7021,3646.39%
181021,3388153.97%
180020,5231,5618.23%
179018,9620.00%

Loudoun County Population Growth

Population Data via

Loudoun County Race Data

Race Population Percentage
White262,76366.01%
Asian67,46016.95%
Black or African American28,7027.21%
Two or More Races13,5513.40%
American Indian and Alaska Native1,6600.42%
Native Hawaiian and Other Pacific Islander4230.11%

Loudoun County Population Pyramid

0k5k10k15k Male Population0k5k10k15k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990