Westmoreland County, Pennsylvania

Westmoreland County: County in Pennsylvania, United States


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 10 years in 2020 county had an estimated population of 347,087 inhabitants. Its county seat is Greensburg. The county was created 251 years ago in 1773.

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

Quick Facts about Westmoreland County

Population : 347,087 (2020)
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 : 01:16:04 (2nd March 2024)
Density : 335 Pop. per km² as of 2020
Population growth : -5.21% (2010-2020)
Greensburg-pennsylvania-courthouse image
Greensburg-pennsylvania-courthouse image


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.

Westmoreland County map

The largest city of Westmoreland County is Murrysville with a population of 20,134. Other cities include, Greensburg population 14,082, New Kensington population 12,188, Lower Burrell population 10,997 and Jeannette population 9,000. See all Westmoreland County cities & populated places.

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
Greensburg 14,082 City and county seat of Westmoreland County, Pennsylvania
New Kensington 12,188 City in Westmoreland County, Pennsylvania, United States
Lower Burrell 10,997 City of Pennsylvania
Jeannette 9,000 City in Pennsylvania
Latrobe 7,767 City in Pennsylvania
Monessen 7,176 City in Pennsylvania
Vandergrift 4,832 Borough of Pennsylvania
Arnold 4,790 City of Pennsylvania
Scottdale 4,060 Borough of Pennsylvania
Irwin 3,716 Borough of Pennsylvania
Manor 3,322 Borough in Pennsylvania
Fulton 3,168 Township in Lancaster County, Pennsylvania
Trafford 2,908 Borough of Pennsylvania
Youngwood 2,828 City in Westmoreland County, Pennsylvania, United States of America
Delmont 2,501 City in Douglas County, South Dakota, United States

Westmoreland County has 8 neighbours.


According to census records, the population of Westmoreland County decreased by 5.21% in 10 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
2020 347,087 -0.52% estimation process

Comitatul Westmoreland, Comte de Westmoreland, Comté de Westmoreland, Condado de Westmoreland, Condado han Westmoreland, Contea di Westmoreland, Hrabstwo Westmoreland, Konteth Westmoreland, Okrug Vestmorland, Quan Westmoreland, Quận Westmoreland, Uehstmorlend, Uestmorlend, Vestmorlend, Vestmorlend srjan, Westmoreland, Westmoreland Comitatus, Westmoreland Kun, Westmoreland Kūn, Westmoreland konderria, Westmoreland megye, Westmorelandi maakond, raestamoralyanda ka'unti, shhrstan wstmwrlnd pnsylwanya, u~esutomoarando jun, wei si te mo lan xian, Вестморленд, Округ Вестморланд, Уестморленд, Уэстморленд, Վեստմորլենդ շրջան, شهرستان وستمورلند، پنسیلوانیا, مقاطعة ويستمورلاند, ویسٹمورلینڈ کاؤنٹی، پنسلوانیا, ৱেস্টমোরল্যান্ড কাউন্টি, ウェストモアランド郡, 威斯特摩蘭縣

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, .


Other places with the same name (2)

Pennsylvania Other Counties (more counties)

County Name Population Title
Philadelphia County 1,578,487 County in Pennsylvania, United States
Philadelphia 1,578,487 The sixth most populous city in the United States and the center of the Philadelphia metropolitan area.
Allegheny County 1,211,358 County in the southwestern part of the U.
Montgomery County 833,869 County in Pennsylvania, United States
Bucks County 627,987 County in Pennsylvania, United States
Delaware County 566,753 County in Pennsylvania, United States
Lancaster County 546,192 County in Pennsylvania, United States
Chester County 526,759 County in Pennsylvania, United States
York County 450,448 County in Maine, United States
Berks County 421,017 County in Pennsylvania, United States
Lehigh County 370,802 County in Pennsylvania, United States of America
Luzerne County 316,982 County in Pennsylvania, United States
Northampton County 305,892 County in Pennsylvania, United States
Pittsburgh 299,226 The second most populous city in Pennsylvania and the center of the Pittsburgh metropolitan area.
Dauphin County 279,874 County in Pennsylvania, United States
Erie County 268,426 County in Pennsylvania, United States