LandBrief

Onondaga County

Parcel & Property Data

179,330Total Parcels
—Avg. Market Value
551,914Total Acres

About This Data

LandBrief holds 179,330 parcel records for Onondaga 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 Onondaga County assessor roll dated June 2020, loaded August 2026. See data sources for every county’s vintage.

Explore Onondaga County

Onondaga County by the Numbers

Median parcel size
0.26 acres
measured from mapped boundaries
90th-percentile parcel
2.9 acres
County land area
498,171 acres
U.S. Census measurement
Communities
35
0.0% of parcels outside any incorporated place

Who Owns Onondaga County?

Share of the county’s 179,330 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
Individuals85.3%
Companies & organizations9.3%
Trusts & estates3.3%
Government1.4%
Other / unclassified0.7%

The largest owner on record is GSPDC with 1,061 parcels — see the full landowner leaderboard.

Parcel Records (~179,330 total)

per page
Parcel IDOwnerAddressCityAcreage
31150007200000010210000000Thomas Annette—Syracuse33333.33
31150007800000040070000000Murphy Brian A—Syracuse13210.00
31150007600000150120000000Scharborough John C—Syracuse13205.00
31228907000000070110000000Second Gen Develpers, LLC—Cicero7840.00
31420006700000010010000000U S Government Bureau Of Indian Affairs—Onondaga1581.02
31340002600000010010000000Indian Reservation Onondaga—Lafayette1570.12
31248908300000010280010000Town Of Clay—Clay1517.11
31340002700000010010000000Indian Reservation Onondaga—Lafayette1504.09
31368902300000010010010000New York State—Lysander1406.44
31268908000000010020040000Hanson Aggregates New York Inc—Dewitt1397.41
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Download Onondaga County parcel data

All 179,330 parcels in Onondaga County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

Get Onondaga County on FreeParcelData →

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Frequently Asked Questions

How many parcels are in Onondaga County?

The Onondaga County assessor roll on file records 179,330 parcels across 35 communities.

Who owns the most land in Onondaga County?

GSPDC holds 1,061 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Onondaga County?

Measured from mapped boundaries, the median parcel is 0.26 acres, and nine parcels in ten are under 2.9 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Onondaga County is government-owned?

Government entities — federal, state, and local — hold 1.4% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Onondaga County assessor roll dated June 2020. 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 (35)

179,330 parcels across 35 communities in Onondaga County.