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Union County, SD Parcels & GIS Data

Union County, SD parcel data: 13,683 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Union County, South Dakota parcel data covering 13,683 property records.

This page documents parcel-level coverage for Union County, South Dakota. 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 the southernmost county in the U.S. state of South Dakota. As of the 2020 census, the population was 16,811, making it the 13th most populous county in South Dakota. Its county seat has been Elk Point since April 30, 1865.

FIPS 46127

The FIPS code for Union County is 46127.

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Attribute coverage

Union County contains 13,683 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL). For the LBCS columns, only real classifications count: the to-be-determined and not-applicable placeholder codes are excluded.

ColumnCoverageRecords populated
lrid100%13,683
parcelid99.9%13,666
parcelid2<0.1%0
ogparcelid99.9%13,666
ogparcelid22.0%279
parentid<0.1%0
stackid<0.1%0
geoid100%13,683
statefp100%13,683
countyfp100%13,683
countyname100%13,683
cousubfp100%13,683
cousubname100%13,683
tractce100%13,683
tractname100%13,683
taxacctnum<0.1%0
taxyear100%13,683
taxdistrict<0.1%0
usecode<0.1%0
usedesc44.0%6,016
zoningcode11.5%1,570
zoningdesc<0.1%0
numbldgs99.1%13,564
numunits83.8%11,463
yearbuilt<0.1%0
numfloors<0.1%2
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue0.4%55
landvalue0.4%55
agvalue0.4%55
totalvalue65.6%8,971
taxacres1.8%242
calcarea100%13,683
saleamt<0.1%0
saledate<0.1%0
ownertype85.2%11,660
ownername85.2%11,660
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr70.4%9,628
parcelcity69.3%9,488
parcelstate100%13,683
parcelzip100%13,683
legaldesc<0.1%0
township95.6%13,075
section95.6%13,075
qtrsection95.6%13,075
range95.6%13,075
plssdesc95.6%13,075
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype1.1%145
accesstype1.4%191
iucnclass1.2%161
placename4.9%670
placetype4.4%608
firmid98.9%13,539
firmdate98.9%13,539
fldzone98.9%13,539
zonesubty89.7%12,274
staticbfe<0.1%0
elevmin99.8%13,651
elevmax99.8%13,651
elevavg99.8%13,651
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
naicscode3.4%468
frsid0.4%61
dfrurl0.4%61
caapermit0.4%61
cwapermit0.4%61
rcrapermit0.4%61
updated100%13,678
centroidx100%13,683
centroidy100%13,683
surfpointx100%13,683
surfpointy100%13,683
geom100%13,683
extras100%13,683
ownerlist84.6%11,571
placefp49.7%6,805
zoningurl11.4%1,561
lbcsactivity44.4%6,072
lbcsfunction44.4%6,071
lbcstype50.6%6,929
lbcscharacter91.3%12,491
lbcsownership85.4%11,686
sourceurl<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, South Dakota (46127) 2 entities · most recent acquisition per entity · generated 2026-10-17 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 parcelid2 totalvalue taxacres ownername parceladdr geom parentid 2 cols ⇢ parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid extras ZONING geom zoning 8 cols ⇢ geom zoningcode extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% taxyear 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 98.9% fldzone 89.7% zonesubty 98.9% firmdate 98.9% firmid supplemented · derived / other pipelines 99.1% numbldgs 83.8% numunits 69.3% parcelcity 100% parcelstate 100% parcelzip 95.6% township 95.6% section 95.6% qtrsection 95.6% range 95.6% plssdesc 84.6% ownerlist 50.6% lbcstype 91.3% lbcscharacter 85.4% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 parentid geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear zoningcode numbldgs numunits totalvalue taxacres calcarea ownertype ownername parceladdr parcelcity parcelstate parcelzip township section qtrsection range plssdesc firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (51) — empty or below 50% fill in this county stackid, taxacctnum, taxdistrict, usecode, usedesc, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, imprvalue landvalue, agvalue, saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip, legaldesc, book, page, block, lot, parceltype, accesstype iucnclass, placename, placetype, staticbfe, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid dfrurl, caapermit, cwapermit, rcrapermit, placefp, zoningurl, lbcsactivity, lbcsfunction, sourceurl PARCEL 8 mapped · 2 kept in extras · 46 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid extras · 2 source columns preserved as json ogparcelid, geoid extras not present in source — filled with NULL (46) taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip, parcelcity, parcelstate, parcelzip legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot, updated, sourceurl, taxdistrict, heatfuel, fireplaces heating, cooling, foundation, roofcover, siding ZONING 2 mapped · 1 transformed · 8 kept in extras · 7 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING geom zoning geom zoningcode NULLIF(TRIM(zoning), '')::text extras · 8 source columns preserved as json parcelid, address, legaldesc, cityaddn, cityblock, citylot quarter, str extras not present in source — filled with NULL (7) zoningdesc, zoningtype, ordinance, setbacks, restrictions, notes, sourceurl

Neighboring counties

Parcel data for counties bordering Union County:

Frequently asked questions

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

Land Records publishes a Union County, SD 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, SD dataset as a GeoPackage or CSV.

How many parcels are in Union County, SD?

The current dataset contains 13,683 parcel records for Union County, SD, each with its boundary geometry and assessor attributes.

What is the FIPS code for Union County, SD?

The FIPS code for Union County, SD is 46127.

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

Each Union County, SD 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, SD parcel data free?

You can preview Union County, SD 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.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated