Westmoreland County

Parcel & Property Data

190,787Total Parcels

—Avg. Market Value

1,091,859Total Acres

About This Data

LandBrief holds 190,787 parcel records for Westmoreland County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.

Data from the Westmoreland County assessor roll dated February 2024, loaded August 2026. See data sources for every county’s vintage.

Explore Westmoreland County

Westmoreland County by the Numbers

Median parcel size: 0.33 acres
measured from mapped boundaries
90th-percentile parcel: 4.1 acres
County land area: 657,735 acres
U.S. Census measurement
Communities: 71
55.9% of parcels outside any incorporated place

Who Owns Westmoreland County?

Share of the county’s 190,787 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.

Owner type	Share of parcels
Individuals	89.4%
Companies & organizations	7.0%
Trusts & estates	2.3%
Government	0.5%
Other / unclassified	0.8%

The largest owner on record is NERNBERG A RICHARD TRUSTEE ETA with 242 parcels — see the full landowner leaderboard.

Parcel Records (~190,787 total)

Showper page

Parcel ID	Owner	Address	City	Acreage
49-20-00-0-039	KOSIC GERALD J	LR 64160 FORBES EST PL 1	Murrysville	100001.50
51-29-00-0-069	MELLON BANK N A	ROLLING ROCK	Unincorporated	7658.90
51-29-00-0-069	MELLON BANK N A	ROLLING ROCK	Unincorporated	7658.90
48-23-00-0-023	MELLON RICHARD P ETAL	—	Unincorporated	5098.90
60-10-00-0-022	COMMONWEALTH OF PENNA	T899	Unincorporated	5096.00
60-10-00-0-022	COMMONWEALTH OF PENNA	T899	Unincorporated	5096.00
60-10-00-0-022	COMMONWEALTH OF PENNA	T899	Unincorporated	5096.00
44-19-00-0-002	COMMONWEALTH PA DEPT FOR WATER	—	Unincorporated	4604.50
44-19-00-0-002	COMMONWEALTH PA DEPT FOR WATER	—	Unincorporated	4604.50
44-19-00-0-002	COMMONWEALTH PA DEPT FOR WATER	—	Unincorporated	4604.50

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All 190,787 parcels in Westmoreland County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

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Frequently Asked Questions

How many parcels are in Westmoreland County?

The Westmoreland County assessor roll on file records 190,787 parcels across 71 communities, with 55.9% lying outside any incorporated place.

Who owns the most land in Westmoreland County?

NERNBERG A RICHARD TRUSTEE ETA holds 242 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Westmoreland County?

Measured from mapped boundaries, the median parcel is 0.33 acres, and nine parcels in ten are under 4.1 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Westmoreland County is government-owned?

Government entities — federal, state, and local — hold 0.5% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Westmoreland County assessor roll dated February 2024. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.

Browse by City (71)

190,787 parcels across 71 communities in Westmoreland County.