Westmoreland County GIS Maps

Westmoreland County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Westmoreland County Parcels

Westmoreland County has 186,960 mapped parcels covering 629,728 acres. The median assessed value is $15,600. The median lot size is 2.55 acres. 9,939 parcels are 10 acres or larger. The records carry 150,390 distinct owner names. About 3% of parcels list an owner mailing address outside Pennsylvania. Owner names, mailing addresses, assessed values and lot sizes are on nearly every parcel. Site addresses reach 82.9%. Browse the interactive Westmoreland County Parcel viewer here.

Westmoreland County Parcel Data Coverage

Field coverage measured across all Westmoreland County parcel records. Download free sample data here.

Westmoreland County Population

Westmoreland County had 354,663 residents in 2020. That was 2.9% lower than in 2010. Westmoreland County had 15,330 fewer people in 2020 than it did in 2000, which points to a long-term population decline. Murrysville is the largest city in the county, but it accounts for only about 6% of the total population. The county is fairly spread out, with about 345 people per square mile. Some of the county's most populated postal areas include Greensburg, Irwin and New Kensington.

Population Trend in Westmoreland County PA

Westmoreland County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Westmoreland County Zip Codes

Westmoreland County has 77 zip codes. Some of the county's most populated zip codes include Greensburg (15601), Irwin (15642) and New Kensington (15068). Greensburg is the largest zip by population, with about 57,141 residents or 16% of the county total. Together, the three largest zips account for about 40% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Westmoreland County PA

Westmoreland County Zip Code populations and trends per most recent census data.

Westmoreland County Demographics

Westmoreland County has a median age of 47.1, which makes the county a little older than Pennsylvania overall. About 18.3% of residents are under 18, while 23.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 28% of the population, which points to a solid working-age base. About 31.8% of adults have a bachelor's degree or higher, above the statewide figure of 34.5%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Westmoreland County PA

Westmoreland County School Districts

Westmoreland County is served by 19 public school districts with 44,220 students enrolled in 2024. The largest districts on the county map are Hempfield Area, Norwin and Penn-Trafford. Those three districts account for about 31% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.

Largest School Districts by Enrollment in Westmoreland County PA

Westmoreland County school district enrollment and trends per most recent NCES reporting data.

Westmoreland County Housing & Real Estate

Westmoreland County has a median home value of $193,100 and a median gross rent of $843. About 78% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Pennsylvania median, while rents come in below the state average. In March 2026, the median listing price was $222,450 and homes spent about 75 days on the market.

Businesses in Westmoreland County, PA

Westmoreland County has 14,624 business listings across 912 categories. The largest categories in Westmoreland County business listings are Churches & Religious Organizations (432, 3.0%), Auto Repair (286, 2.0%), and Medical Offices (228, 1.6%). The full Westmoreland County business listings dataset includes names, categories, addresses and contact details where available. Westmoreland County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Westmoreland County, PA

Westmoreland County Business Listings

Westmoreland County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Westmoreland County Basemaps

Westmoreland County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from Pennsylvania — explore the full structure before you buy.