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Lewis and Clark County, MT Parcels & GIS Data

Lewis and Clark County, MT parcel data: 45,692 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Lewis and Clark County, Montana parcel data covering 45,692 property records.

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

Lewis and Clark County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 70,973, making it the 4th least populous capital county in the United States. Its county seat and most populous city is Helena, the state capital.

FIPS 30049

Official county website: https://www.lccountymt.gov

The FIPS code for Lewis and Clark County is 30049.

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Attribute coverage

Lewis and Clark County contains 45,692 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%45,692
parcelid100%45,692
parcelid299.9%45,641
ogparcelid100%45,692
ogparcelid299.9%45,641
parentid<0.1%0
stackid<0.1%0
geoid100%45,692
statefp100%45,692
countyfp100%45,692
countyname100%45,692
cousubfp100%45,692
cousubname100%45,692
tractce100%45,692
tractname100%45,692
taxacctnum13.2%6,032
taxyear99.9%45,646
taxdistrict99.9%45,646
usecode99.9%45,632
usedesc99.9%45,646
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs100%45,692
numunits69.8%31,908
yearbuilt59.1%27,005
numfloors59.3%27,086
bldgsqft59.1%27,005
bedrooms58.6%26,793
halfbaths11.3%5,157
fullbaths58.2%26,589
imprvalue69.3%31,657
landvalue99.6%45,488
agvalue<0.1%0
totalvalue99.6%45,488
taxacres99.9%45,641
calcarea100%45,692
saleamt<0.1%0
saledate88.1%40,249
ownertype99.9%45,646
ownername99.9%45,646
owneraddr99.9%45,645
ownercity99.9%45,628
ownerstate99.9%45,628
ownerzip99.9%45,628
parceladdr100%45,678
parcelcity82.6%37,720
parcelstate100%45,692
parcelzip100%45,692
legaldesc99.9%45,646
township99.9%45,660
section99.9%45,660
qtrsection99.9%45,660
range99.9%45,660
plssdesc99.9%45,660
book87.7%40,069
page87.7%40,069
block<0.1%0
lot<0.1%0
parceltype11.5%5,256
accesstype11.5%5,256
iucnclass9.1%4,147
placename15.2%6,967
placetype15.1%6,908
firmid99.7%45,571
firmdate99.7%45,571
fldzone99.7%45,571
zonesubty52.9%24,185
staticbfe<0.1%0
elevmin86.8%39,681
elevmax86.8%39,681
elevavg86.8%39,681
fireplaces9.6%4,369
heating59.1%27,005
heatfuel59.1%27,005
cooling59.1%27,005
foundation59.1%27,005
roofcover51.8%23,686
siding59.1%27,005
bldgtype<0.1%0
naicscode27.5%12,555
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%45,692
centroidx100%45,692
centroidy100%45,692
surfpointx100%45,692
surfpointy100%45,692
geom100%45,692
extras100%45,692
ownerlist99.2%45,318
placefp65.8%30,082
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Lewis and Clark 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 — Lewis and Clark County, Montana (30049) 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 86.8% elevmin 86.8% elevmax 86.8% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 52.9% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 100% usecode 100% numbldgs 69.8% numunits 59.1% yearbuilt 59.3% numfloors 59.1% bldgsqft 58.6% bedrooms 58.2% fullbaths 88.1% saledate 82.6% parcelcity 100% parcelstate 100% parcelzip 100% qtrsection 100% plssdesc 87.7% book 87.7% page 59.1% heating 59.1% heatfuel 59.1% cooling 59.1% foundation 51.8% roofcover 59.1% siding 99.2% ownerlist 65.8% placefp lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode usedesc numbldgs numunits yearbuilt numfloors bldgsqft bedrooms fullbaths imprvalue landvalue totalvalue taxacres calcarea saledate ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township section qtrsection range plssdesc book page firmid firmdate fldzone zonesubty elevmin elevmax elevavg heating heatfuel cooling foundation roofcover siding updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp publish.parcel_layer columns not fed by these sources (24) — empty or below 50% fill in this county parentid, stackid, zoningcode, zoningdesc, halfbaths, agvalue, saleamt, block, lot, parceltype, accesstype, iucnclass, placename, placetype staticbfe, fireplaces, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, 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 Lewis and Clark County:

Frequently asked questions

Where can I find Lewis and Clark County, MT parcel and GIS data?

Land Records publishes a Lewis and Clark 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 Lewis and Clark County, MT dataset as a GeoPackage or CSV.

How many parcels are in Lewis and Clark County, MT?

The current dataset contains 45,692 parcel records for Lewis and Clark County, MT, each with its boundary geometry and assessor attributes.

What is the FIPS code for Lewis and Clark County, MT?

The FIPS code for Lewis and Clark County, MT is 30049.

What information does each Lewis and Clark County, MT parcel record include?

Each Lewis and Clark 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 Lewis and Clark County, MT parcel data free?

You can preview Lewis and Clark 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 Lewis and Clark County, MT have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated