

There were 168,199 housing units at an average density of 163.7 units per square mile (63.2/km 2). The population density was 355.4 people per square mile (137.2 people/km 2).

Adjacent counties ĭemographics Historical population CensusĪt the 2010 census, there were 365,169 people, 153,650 households and 101,928 families residing in the county. Average monthly temperatures in Greensburg range from 28.7 ☏ in January to 71.8 ☏ in July, while in Murrysville they range from 29.4 ☏ in January to 73.1 ☏ in July, in Latrobe they range from 28.9 ☏ in January to 72.0 ☏ in July, and in Ligonier they range from 28.1 ☏ in January to 71.1 ☏ in July. Westmoreland has a humid continental climate ( Dfa/ Dfb). Census Bureau, the county has a total area of 1,036 square miles (2,680 km 2), of which 1,028 square miles (2,660 km 2) is land and 8.5 square miles (22 km 2) (0.8%) is water. It is named after Westmorland, a historic county of England.Īccording to the U.S. Westmoreland County originally included the present-day counties of Fayette, Washington, Greene, and parts of Beaver, Allegheny, Indiana, and Armstrong counties. Westmoreland County is included in the Pittsburgh Metropolitan Statistical Area.įormed from Lancaster, Northumberland, and later Bedford counties, Westmoreland County was founded on February 26, 1773, and was the first county in the Pennsylvania colony whose entire territorial boundary was located west of the Allegheny Mountains. It is named after Westmorland, a historic county of England. įormed from, successively, Lancaster, Northumberland, and later Bedford counties, Westmoreland County was founded on February 26, 1773, and was the first county in the colony of Pennsylvania whose entire territorial boundary was located west of the Allegheny Mountains. As of the 2020 census, the population was 364,663. Westmoreland County is a county in the Commonwealth of Pennsylvania, United States.
