Westmoreland County Population 2018

Westmoreland County's estimated population is 352,627 with a growth rate of -0.61% in the past year according to the most recent United States census data. Westmoreland County is the 11th largest county in Pennsylvania.

Year Population Growth Growth Rate
2017352,627-2,161-0.61%
2016354,788-2,207-0.62%
2015356,995-1,967-0.55%
2014358,962-1,842-0.51%
2013360,804-2,087-0.58%
2012362,891-1,603-0.44%
2011364,494-640-0.18%
2010365,134-5,187-1.40%
1990370,321-21,973-5.60%
1980392,29415,3594.07%
1970376,93524,3066.89%
1960352,62939,45012.60%
1950313,1799,7683.22%
1940303,4118,4162.85%
1930294,99521,4277.83%
1920273,56842,26418.27%
1910231,30471,12944.41%
1900160,17547,35641.98%
1890112,81934,78344.57%
188078,03619,31732.90%
187058,7194,9839.27%
186053,7362,0103.89%
185051,7269,02721.14%
184042,6994,29911.20%
183038,4007,86025.74%
182030,5404,14815.72%
181026,3923,66616.13%
180022,7266,70841.88%
179016,0180.00%

Westmoreland County Population Growth

Population Data via

Westmoreland County Race Data

Race Population Percentage
White339,95696.41%
Black or African American8,9072.53%
Two or More Races5,0561.43%
Asian3,2350.92%
American Indian and Alaska Native4560.13%
Native Hawaiian and Other Pacific Islander890.03%

Westmoreland 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