Jefferson County

Parcel & Property Data

122,183Total Parcels

—Avg. Market Value

587,754Total Acres (measured from parcel boundaries)

About This Data

LandBrief holds 122,183 parcel records for Jefferson 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 Jefferson County assessor roll dated November 2023, loaded August 2026. See data sources for every county’s vintage.

Explore Jefferson County

Jefferson County by the Numbers

Median parcel size: 0.23 acres
measured from mapped boundaries
90th-percentile parcel: 2 acres
County land area: 561,111 acres
U.S. Census measurement
Communities: 14
10.6% of parcels outside any incorporated place

Who Owns Jefferson County?

Share of the county’s 122,183 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	80.4%
Companies & organizations	11.4%
Trusts & estates	3.4%
Government	2.7%
Other / unclassified	2.1%

The largest owner on record is JEFFERSON COUNTY D D 6 with 519 parcels — see the full landowner leaderboard.

Parcel Records (~122,183 total)

Showper page

Parcel ID	Owner	Address	City	Acreage
141225	U S FISH & WILDLIFE	—	Unincorporated	87.08 †
136871	U S FISH & WILDLIFE	—	Unincorporated	66.80 †
134652	U S FISH & WILDLIFE	—	Unincorporated	256.52 †
137444	UNITED STATES OF AMERICA	—	Unincorporated	302.67 †
136296	UNITED STATES OF AMERICA	—	Unincorporated	303.17 †
134654	UNITED STATES OF AMERICA	—	Unincorporated	303.57 †
138550	UNITED STATES OF AMERICA	—	Unincorporated	304.54 †
137440	SALT GRASS PARTNERS LTD	—	Unincorporated	304.24 †
141850	SALT GRASS PARTNERS LTD	—	Unincorporated	303.93 †
140391	SALT GRASS PARTNERS LTD	—	Unincorporated	1224.90 †

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All 122,183 parcels in Jefferson 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 Jefferson County?

The Jefferson County assessor roll on file records 122,183 parcels across 14 communities, with 10.6% lying outside any incorporated place.

Who owns the most land in Jefferson County?

JEFFERSON COUNTY D D 6 holds 519 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Jefferson County?

Measured from mapped boundaries, the median parcel is 0.23 acres, and nine parcels in ten are under 2 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Jefferson County is government-owned?

Government entities — federal, state, and local — hold 2.7% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Jefferson County assessor roll dated November 2023. 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 (14)

122,183 parcels across 14 communities in Jefferson County.