LandBrief

Allegheny County

Parcel & Property Data

583,698Total Parcels
—Avg. Market Value
431,761Total Acres (measured from parcel boundaries)

About This Data

LandBrief holds 583,698 parcel records for Allegheny 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 Allegheny County assessor roll dated February 2024, loaded August 2026. See data sources for every county’s vintage.

Explore Allegheny County

Allegheny County by the Numbers

Median parcel size
0.16 acres
measured from mapped boundaries
90th-percentile parcel
0.77 acres
County land area
467,169 acres
U.S. Census measurement
Communities
144
5.5% of parcels outside any incorporated place

Who Owns Allegheny County?

Share of the county’s 583,698 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 typeShare of parcels
Individuals83.0%
Companies & organizations10.6%
Trusts & estates2.5%
Government3.1%
Other / unclassified0.8%

The largest owner on record is CITY OF PITTSBURGH with 12,678 parcels — see the full landowner leaderboard.

Parcel Records (~583,698 total)

per page
Parcel IDOwnerAddressCityAcreage
0422A00058000000TRAPIZONA RICHARD TS MCCOY PLACE RDSewickley2.05 †
0422B00016000000PICKARD VICTOR W JR & MARY K (W)116 S MCCOY PLACE RDSewickley0.65 †
0422B00018000000TRAPIZONA RICHARD T & LISA A (W)126 S MCCOY PLACE RDSewickley1.76 †
0422E00197000000LANG CHRISTOPHER P & LAUREN M (W)128 S MCCOY PLACE RDSewickley5.24 †
0422A00098000000TRAPIZONA ROBERT J & LUISA (W)132 S MCCOY PLACE RDSewickley2.04 †
0422A00102000000LIAO MORRIS & MONICA (W)134 S MCCOY PLACE RDSewickley5.05 †
0422B00035000000PFLUGH JOANNE B136 S MCCOY PLACE RDSewickley1.11 †
0422B00257000000LUX KHRISTINE S & WILLIAM J (H)137 S MCCOY PLACE RDSewickley0.74 †
0422B00060000000WOLFF ROBERT E & PAULINE R146 S MCCOY PLACE RDSewickley0.73 †
0422B00243000000TUCCI ERNEST J & MARY E147 S MCCOY PLACE RDSewickley0.65 †
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All 583,698 parcels in Allegheny 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 Allegheny County?

The Allegheny County assessor roll on file records 583,698 parcels across 144 communities, with 5.5% lying outside any incorporated place.

Who owns the most land in Allegheny County?

CITY OF PITTSBURGH holds 12,678 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Allegheny County?

Measured from mapped boundaries, the median parcel is 0.16 acres, and nine parcels in ten are under 0.77 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Allegheny County is government-owned?

Government entities — federal, state, and local — hold 3.1% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Allegheny 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 (144)

583,698 parcels across 144 communities in Allegheny County.