Westmoreland County is a county in Pennsylvania. It covers 1,036 square miles (663,334 acres), which represents less than one percent of the state total. Of Pennsylvania's 67 counties, Westmoreland County ranks 11th in terms of the size of its population (357,956, according to 2015 Census estimates). Recent data from Lands of America calculates the average value of land and acreage for sale in Westmoreland County at $40,100 per acre. The average list price of property and land for sale was $4,812 (the most expensive listing being for $5,750) and the median acreage of land for sale in Westmoreland County was less than an acre. Land for sale in Westmoreland County totaled zero acres and $9,624 in overall land value, with the city of Belle Vernon featuring the most land for sale in the county. Farmland was the most common type of land for sale in Westmoreland County.