Westmoreland County , Pennsylvania

Westmoreland County: County in Pennsylvania, United States

Westmoreland County locator map
Location of Westmoreland County on Pennsylvania map.


Westmoreland County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 365,169 and a population density of 352 people per km². After 9 years in 2019 county had an estimated population of 348,899 inhabitants. Its county seat is Greensburg. The county was created 248 years ago in 1773.


Westmoreland County is located at 40°18'39"N 79°28'1"W (40.3107300, -79.4669600). It has 8 neighbors: Allegheny County, Armstrong County, Butler County, Cambria County, Fayette County, Indiana County, Somerset County and Washington County.

Greensburg-pennsylvania-courthouse image

The largest city of Westmoreland County is Murrysville with a population of 20,134. Other cities include, Penn population 16,623, Greensburg population 14,113, New Kensington population 12,292 and Lower Burrell population 11,078. See all Westmoreland County cities & populated places.


Westmoreland County forecast: A slight chance of rain showers before 8am. Sunny, with a high near 78. more

Greensburg-pennsylvania-courthouse image

Westmoreland County map

Westmoreland County Quick Facts

Population : 348,899 (2019)
Country : United States of America
State : Pennsylvania (United States)
Different from : Westmoreland County
Twitter username : westmdcountypa
Area : 1036 km2
Water as percent of area : 0.8%
Land as percent of area : 99.2%
Named for : Westmorland
Altitude : 1,073 feet / 327 meters
Capital : Greensburg
Establishment : February 02, 1773
Time Zone : America/New_York
Local time : 09:03:00 (30th July 2021)
Density : 337 Pop. per km² as of 2019
Population growth : -4.66% (2010-2019)
Weather : 78℉ Slight Chance Rain Showers then Sunny 7-days weather

Westmoreland County has 8 neighbours.


According to census records, the population of Westmoreland County decreased by 4.66% in 9 years.

Year Population % Change Method
2010 365,169 - census
2011 364,436 -0.2% estimation process
2012 362,787 -0.45% estimation process
2013 360,663 -0.59% estimation process
2014 358,866 -0.5% estimation process
2015 356,923 -0.54% estimation process
2016 354,665 -0.64% estimation process
2017 352,006 -0.76% estimation process
2018 350,459 -0.44% estimation process
2019 348,899 -0.45% estimation process

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People born in Westmoreland County (37)

People born in Westmoreland County, including industrialist Henry Clay Frick, researcher and businessman Herbert Boyer, Union Army General John W. Geary, you can see a list of people who born in Westmoreland County.

Other places with the same name (1)

Westmoreland County Populated Places (more)

Cities, Towns, Neighborhoods & Other Populated Places in Westmoreland County.

City Name Population Title
Murrysville 20,134 Municipality in Westmoreland County, Pennsylvania
Penn 16,623 Borough in Westmoreland County, Pennsylvania, United States
Greensburg 14,113 City and county seat of Westmoreland County, Pennsylvania
New Kensington 12,292 City in Westmoreland County, Pennsylvania, United States
Lower Burrell 11,078 City of Pennsylvania
Jeannette 9,074 City in Pennsylvania
Latrobe 7,830 City in Pennsylvania
Monessen 7,237 City in Pennsylvania
Ligonier 6,372 Township in Westmoreland County, Pennsylvania
Vandergrift 4,875 Borough of Pennsylvania
Arnold 4,831 City of Pennsylvania
Mount Pleasant 4,363
Scottdale 4,094 Borough of Pennsylvania
Level Green 4,020
Acme 3,833
Irwin 3,744 Borough of Pennsylvania

Pennsylvania Other Counties (more counties)

County Name Population Title
Pennsylvania 12,801,989 State in the northeastern United States
Philadelphia County 1,584,064 County in Pennsylvania, United States
Philadelphia 1,584,064 Largest city in Pennsylvania, United States
Allegheny County 1,216,045 County in the southwestern part of the U.
Montgomery County 830,915 County in Pennsylvania, United States
Bucks County 628,270 County in Pennsylvania, United States
Delaware County 566,747 County in Pennsylvania, United States
Lancaster County 545,724 County in Pennsylvania, United States
Chester County 524,989 County in Pennsylvania, United States
York County 449,058 County in Maine, United States
Berks County 421,164 County in Pennsylvania, United States
Croydon 385,346 London borough in South London
Lehigh County 369,318 County in Pennsylvania, United States of America
Luzerne County 317,417 County in Pennsylvania, United States
Northampton County 305,285 County in Pennsylvania, United States
Pittsburgh 300,286 County seat in Allegheny County, Pennsylvania, United States

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