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Big Horn County, MT Parcels & GIS Data

Big Horn County, MT parcel data: 15,778 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Big Horn County, Montana parcel data covering 15,778 property records.

This page documents parcel-level coverage for Big Horn County, Montana. 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 Big Horn County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Big Horn County property dataset.

Big Horn County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 13,124. The county seat is Hardin.

FIPS 30003

Official county website: https://itax.tylertech.com/BigHornMT/

The FIPS code for Big Horn County is 30003.

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Attribute coverage

Big Horn County contains 15,778 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%15,778
parcelid100%15,778
parcelid299.8%15,742
ogparcelid100%15,778
ogparcelid299.8%15,742
parentid<0.1%0
stackid<0.1%0
geoid100%15,778
statefp100%15,778
countyfp100%15,778
countyname100%15,778
cousubfp100%15,778
cousubname100%15,778
tractce100%15,778
tractname100%15,778
taxacctnum5.5%864
taxyear100%15,773
taxdistrict100%15,773
usecode99.9%15,756
usedesc100%15,773
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs100%15,778
numunits23.0%3,628
yearbuilt13.4%2,109
numfloors13.4%2,118
bldgsqft13.4%2,109
bedrooms13.3%2,097
halfbaths2.6%417
fullbaths13.2%2,075
imprvalue20.2%3,182
landvalue99.1%15,634
agvalue<0.1%0
totalvalue99.1%15,634
taxacres99.8%15,742
calcarea100%15,778
saleamt<0.1%0
saledate58.5%9,228
ownertype100%15,773
ownername100%15,773
owneraddr100%15,773
ownercity98.3%15,515
ownerstate98.3%15,515
ownerzip98.3%15,515
parceladdr99.9%15,758
parcelcity33.9%5,348
parcelstate100%15,778
parcelzip91.2%14,387
legaldesc100%15,773
township98.8%15,594
section98.8%15,594
qtrsection98.8%15,594
range98.8%15,594
plssdesc98.8%15,594
book57.8%9,119
page57.8%9,119
block<0.1%0
lot<0.1%0
parceltype68.2%10,758
accesstype68.2%10,758
iucnclass3.0%480
placename6.3%989
placetype69.1%10,907
firmid0.8%123
firmdate0.8%123
fldzone0.8%123
zonesubty0.3%45
staticbfe<0.1%0
elevmin22.1%3,487
elevmax22.1%3,487
elevavg22.1%3,487
fireplaces1.8%288
heating13.4%2,109
heatfuel13.4%2,109
cooling13.4%2,109
foundation13.4%2,109
roofcover12.6%1,984
siding13.4%2,109
bldgtype<0.1%0
naicscode82.6%13,039
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%15,778
centroidx100%15,778
centroidy100%15,778
surfpointx100%15,778
surfpointy100%15,778
geom100%15,778
extras100%15,778
ownerlist99.3%15,675
placefp18.3%2,893
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Big Horn 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 — Big Horn County, Montana (30003) 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 propertyid assessmentcode taxyear proptype totalbuildingvalue totallandvalue totalvalue totalacres ownername owneraddress1 ownercity ownerstate ownerzipcode addressline1 legaldescriptionshort township section range geom levydistrict 19 cols ⇢ parcelid parcelid2 taxacctnum taxyear usedesc imprvalue landvalue totalvalue taxacres ownername owneraddr ownercity ownerstate ownerzip parceladdr legaldesc township section range geom taxdistrict extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 22.1% elevmin 22.1% elevmax 22.1% elevavg s_fld_haz_ar · FEMA NFHL 0.8% fldzone 0.3% zonesubty 0.8% firmdate 0.8% firmid supplemented · derived / other pipelines 100% usecode 100% numbldgs 58.5% saledate 100% parcelstate 91.2% parcelzip 98.8% qtrsection 98.8% plssdesc 57.8% book 57.8% page 68.2% parceltype 68.2% accesstype 69.1% placetype 82.6% naicscode 99.3% ownerlist lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode usedesc numbldgs imprvalue landvalue totalvalue taxacres calcarea saledate ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelstate parcelzip legaldesc township section qtrsection range plssdesc book page parceltype accesstype placetype firmid firmdate fldzone zonesubty elevmin elevmax elevavg naicscode updated centroidx centroidy surfpointx surfpointy geom extras ownerlist publish.parcel_layer columns not fed by these sources (34) — empty or below 50% fill in this county parentid, stackid, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue, saleamt parcelcity, block, lot, iucnclass, placename, staticbfe, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, frsid dfrurl, caapermit, cwapermit, rcrapermit, placefp, zoningurl PARCEL 21 mapped · 19 kept in extras · 33 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid propertyid assessmentcode taxyear proptype totalbuildingvalue totallandvalue totalvalue totalacres ownername owneraddress1 ownercity ownerstate ownerzipcode addressline1 legaldescriptionshort township section range geom levydistrict parcelid parcelid2 taxacctnum taxyear usedesc imprvalue landvalue totalvalue taxacres ownername owneraddr ownercity ownerstate ownerzip parceladdr legaldesc township section range geom taxdistrict extras · 19 source columns preserved as json countycd, countyname, gisacres, subdivision certificateofsurvey, addressline2, citystatezip, propaccess continuouscropacres, fallowacres, farmsiteacres, forestacres grazingacres, wildhayacres, irrigatedacres, nonqualacres owneraddress2, owneraddress3, careoftaxpayer extras not present in source — filled with NULL (33) usecode, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue, saleamt, saledate parcelcity, parcelstate, parcelzip, qtrsection, plssdesc, book, page, block, lot, updated, sourceurl, parentid, fireplaces, heating, cooling foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Big Horn County:

Frequently asked questions

Where can I find Big Horn County, MT parcel and GIS data?

Land Records publishes a Big Horn County, MT 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 Big Horn County, MT dataset as a GeoPackage or CSV.

How many parcels are in Big Horn County, MT?

The current dataset contains 15,778 parcel records for Big Horn County, MT, each with its boundary geometry and assessor attributes.

What is the FIPS code for Big Horn County, MT?

The FIPS code for Big Horn County, MT is 30003.

What information does each Big Horn County, MT parcel record include?

Each Big Horn County, MT 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 Big Horn County, MT parcel data free?

You can preview Big Horn County, MT 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 Big Horn County, MT have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated