Westmoreland County Population 2017

Westmoreland County's estimated population is 355,458 with a growth rate of -0.63% 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
2016355,458-2,241-0.63%
2015357,699-1,699-0.47%
2014359,398-1,753-0.49%
2013361,151-2,028-0.56%
2012363,179-1,314-0.36%
2011364,493-629-0.17%
2010365,122-5,199-1.40%
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
White339,95695.64%
Black or African American8,9072.51%
Two or More Races5,0561.42%
Asian3,2350.91%
American Indian and Alaska Native4560.13%
Native Hawaiian and Other Pacific Islander890.03%

Westmoreland County Population Pyramid

0k5k10k15kWestmoreland County Male Population0k5k10k15kWestmoreland County Female Population

Population of Cities in Westmoreland County

City 2010 Census 2016 Estimated Growth Growth Rate
Murrysville2007920042-37-0.18%
Greensburg1489214430-462-3.10%
New Kensington1311612592-524-4.00%
Jeannette96549245-409-4.24%
Latrobe83368003-333-3.99%
Monessen77207413-307-3.98%
Vandergrift52054981-224-4.30%
Mount Pleasant44554325-130-2.92%
Scottdale43844211-173-3.95%
Irwin39713824-147-3.70%
Manor32393321822.53%
Trafford32243114-110-3.41%
Youngwood30502928-122-4.00%
Delmont26862622-64-2.38%
Derry26882570-118-4.39%
West Newton26332519-114-4.33%
New Stanton21732110-63-2.90%
Apollo16471572-75-4.55%
Ligonier15731530-43-2.73%
Avonmore1011973-38-3.76%
Export917873-44-4.80%
New Florence687659-28-4.08%
East Vandergrift674646-28-4.15%
Sutersville605577-28-4.63%
New Alexandria560544-16-2.86%
Hyde Park500475-25-5.00%
Seward495472-23-4.65%
Penn475472-3-0.63%
Bolivar465440-25-5.38%
Smithton399378-21-5.26%
Madison397377-20-5.04%
Arona370347-23-6.22%
Youngstown326314-12-3.68%
Hunker291288-3-1.03%
Adamsburg172168-4-2.33%
Donegal120119-1-0.83%
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