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Jefferson County · property records

Jefferson County property records & parcel data.

Look up property records in Jefferson County, MT — find who owns a property, plus mailing address, assessor & tax value, land use and APN. tracts pulls the full parcel roll via the Montana statewide parcel layer, with the source and pull date stamped on every record. Search a live sample below, or get the full Jefferson County dataset as a bulk file or API feed.

Or ask our research agent about Jefferson County.

Tax-delinquent list

We don’t have tax-delinquent inventory for Jefferson County yet — that coverage is currently 19 Florida counties, built from county advertised certificate lists. See which counties are covered.

Search Jefferson County property records

Free property records lookup.

Find who owns a property — search by owner name, address, or APN. This is a live sample; the full dataset is available as a bulk file or through the API.

Loading Jefferson County parcels…

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APNOwnerAddressLand useYearAssessed value

Looking up a single address? Run a full property report — owner, valuation, sale history and tax-delinquency status for one address, with the county source and pull date on every field.

Get the full Jefferson County dataset

The complete county file — owner, mailing, assessor value, full lineage — by bulk download or API.

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Data overview

What's in the dataset.

County
Jefferson County, MT
FIPS
30043
County seat
Boulder
Population
13,304
Data source
Montana statewide parcel layer
Source type
Statewide assessor layer
Parcels
Confirmed on extract
State coverage
56 / 56 counties
Lineage
Source + pull date on every record
Montana statewide parcel layer·Pulled June 2026
Packaged for your vertical

Same parcels, different buyer.

The same Jefferson County records, packaged for each buyer vertical.

FAQ

Common questions about Jefferson County data.