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Union County, TN Parcels & GIS Data

Union County, TN parcel data: 14,757 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Union County, Tennessee parcel data covering 14,757 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 14,757 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%14,757
parcelid100%14,757
parcelid299.4%14,668
ogparcelid100%14,757
ogparcelid299.4%14,668
parentid<0.1%0
stackid<0.1%0
geoid100%14,757
statefp100%14,757
countyfp100%14,757
countyname100%14,757
cousubfp100%14,757
cousubname100%14,757
tractce100%14,757
tractname100%14,757
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%14,716
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%14,757
calcarea100%14,757
saleamt<0.1%0
saledate<0.1%0
ownertype100%14,754
ownername100%14,754
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr100%14,757
parcelcity100%14,757
parcelstate100%14,757
parcelzip99.8%14,726
legaldesc36.8%5,430
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%14,757
parceltype10.8%1,588
accesstype10.8%1,588
iucnclass10.7%1,586
placename12.9%1,900
placetype12.8%1,891
firmid100%14,756
firmdate100%14,756
fldzone100%14,756
zonesubty98.9%14,595
staticbfe<0.1%0
elevmin98.9%14,595
elevmax98.9%14,595
elevavg98.9%14,595
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%2,381
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%14,757
centroidx100%14,757
centroidy100%14,757
surfpointx100%14,757
surfpointy100%14,757
geom100%14,757
extras100%14,757
lrversion100%14,757

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 2026-07-13 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 100% updated 100% lrversion geom · derived from geometry geom dem.us_1m · USGS 1m DEM 98.9% elevmin 98.9% elevmax 98.9% 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 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 lrversion publish.parcel_layer columns not fed by these sources (55) — 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 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:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated