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Union County, TN Parcels & GIS Data

Union County, TN parcel data: 14,899 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Union County, Tennessee parcel data covering 14,899 property records.

This page documents parcel-level coverage for Union County, Tennessee. Each parcel record carries its boundary polygon (GIS geometry) along with attributes such as the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and most recent sale price and date. Exact fill rates for Union County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Union County property dataset.

Union County is a county located in the U.S. state of Tennessee. As of the 2020 census, its population was 19,802. Its county seat is Maynardville.

FIPS 47173

Official county website: http://www.unioncountytn.com

The FIPS code for Union County is 47173.

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Attribute coverage

Union County contains 14,899 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%14,899
parcelid100%14,899
parcelid299.4%14,808
ogparcelid100%14,899
ogparcelid299.4%14,808
parentid<0.1%0
stackid<0.1%0
geoid100%14,899
statefp100%14,899
countyfp100%14,899
countyname100%14,899
cousubfp100%14,899
cousubname100%14,899
tractce100%14,899
tractname100%14,899
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode<0.1%0
usedesc<0.1%0
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs99.7%14,857
numunits<0.1%7
yearbuilt<0.1%0
numfloors<0.1%7
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%0
landvalue<0.1%0
agvalue<0.1%0
totalvalue<0.1%0
taxacres100%14,899
calcarea100%14,899
saleamt<0.1%0
saledate<0.1%0
ownertype100%14,896
ownername100%14,896
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr100%14,899
parcelcity100%14,899
parcelstate100%14,899
parcelzip99.8%14,866
legaldesc36.7%5,462
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%0
page<0.1%0
block<0.1%0
lot100%14,899
parceltype10.7%1,591
accesstype10.7%1,591
iucnclass10.7%1,589
placename12.8%1,906
placetype12.7%1,897
firmid100%14,895
firmdate100%14,895
fldzone100%14,895
zonesubty98.9%14,732
staticbfe<0.1%0
elevmin98.8%14,720
elevmax98.8%14,720
elevavg98.8%14,720
fireplaces<0.1%0
heating<0.1%0
heatfuel<0.1%0
cooling<0.1%0
foundation<0.1%0
roofcover<0.1%0
siding<0.1%0
bldgtype<0.1%0
naicscode16.1%2,396
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%14,899
centroidx100%14,899
centroidy100%14,899
surfpointx100%14,899
surfpointy100%14,899
geom100%14,899
extras100%14,899
ownerlist99.1%14,758
placefp18.8%2,794
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Union County GIS layers map into the harmonized entity schemas and assemble into the published parcel table, alongside supplemented fields (elevation, flood zone) and deterministic columns.

Schema mapping — Union County, Tennessee (47173) 1 entity · most recent acquisition per entity · generated 2026-08-30 direct column transformed (expression) geometry extras json supplemented determined ALL ENTITIES → FINAL PARCEL SCHEMA Harmonized entity columns assemble into publish.parcel_layer — matched by column name. Supplemented fields show their fill rate in this county. SOURCE COLUMNS HARMONIZED ENTITIES PUBLISH.PARCEL_LAYER PARCEL parcelid calc_acre owner address city lot lastupdate geom 16 cols ⇢ parcelid taxacres ownername parceladdr parcelcity lot updated geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname geom · derived from geometry geom dem.us_1m · USGS 1m DEM 98.8% elevmin 98.8% elevmax 98.8% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 98.9% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 99.4% parcelid2 99.4% ogparcelid2 100% numbldgs 100% parcelstate 100% parcelzip 99.1% ownerlist lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname numbldgs taxacres calcarea ownertype ownername parceladdr parcelcity parcelstate parcelzip lot firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist publish.parcel_layer columns not fed by these sources (57) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxyear, taxdistrict, usecode, usedesc, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft bedrooms, halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, parceltype, accesstype, iucnclass, placename, placetype staticbfe, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit rcrapermit, placefp, zoningurl PARCEL 8 mapped · 16 kept in extras · 46 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid calc_acre owner address city lot lastupdate geom parcelid taxacres ownername parceladdr parcelcity lot updated geom extras · 16 source columns preserved as json gislink, county_id, parcel_type, file_type, conum, cmap, gp parcel, deedac, calcac, owner2, subdiv, shape_starea__ shape_stlength__, objectid_1, full_search_field extras not present in source — filled with NULL (46) parcelid2, taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip, parcelstate parcelzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, sourceurl, taxdistrict, parentid, fireplaces, heating cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Union County:

Frequently asked questions

Where can I find Union County, TN parcel and GIS data?

Land Records publishes a Union County, TN parcel dataset in which every parcel carries its boundary polygon (GIS geometry) along with ownership, assessed value, land use, acreage, and sale history. Preview it in the interactive explorer on this page, or download the full Union County, TN dataset as a GeoPackage or CSV.

How many parcels are in Union County, TN?

The current dataset contains 14,899 parcel records for Union County, TN, each with its boundary geometry and assessor attributes.

What is the FIPS code for Union County, TN?

The FIPS code for Union County, TN is 47173.

What information does each Union County, TN parcel record include?

Each Union County, TN parcel record includes the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and the most recent sale price and date — plus the parcel boundary polygon. Per-attribute fill rates are listed in the coverage table on this page.

Is Union County, TN parcel data free?

You can preview Union County, TN parcels for free in the interactive explorer. The complete dataset is available as a one-time download or through the nationwide parcel web service; see the download options on this page for current pricing.

Does Union County, TN have an official GIS or property records website?

Yes — the official Union County, TN government website is linked in the county details above. Land Records standardizes Union County, TN assessor and recorder records into a single nationwide parcel schema with GIS boundary geometry.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated