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Lewis and Clark County, MT Parcels & GIS Data

Lewis and Clark County, MT parcel data: 40,036 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 40,036 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 40,036 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%40,036
parcelid99.3%39,743
parcelid2100%40,034
ogparcelid99.3%39,743
ogparcelid2100%40,034
parentid<0.1%0
stackid<0.1%0
geoid100%40,036
statefp100%40,036
countyfp100%40,036
countyname100%40,036
cousubfp100%40,036
cousubname100%40,036
tractce100%40,036
tractname100%40,036
taxacctnum99.2%39,702
taxyear100%40,036
taxdistrict99.2%39,706
usecode99.1%39,693
usedesc99.6%39,871
zoningcode31.7%12,702
zoningdesc39.0%15,613
numbldgs100%40,036
numunits71.0%28,422
yearbuilt58.6%23,460
numfloors58.8%23,534
bldgsqft58.6%23,460
bedrooms58.2%23,282
halfbaths10.8%4,322
fullbaths57.7%23,107
imprvalue99.0%39,621
landvalue99.2%39,702
agvalue<0.1%0
totalvalue99.2%39,702
taxacres99.2%39,702
calcarea100%40,036
saleamt<0.1%0
saledate86.5%34,629
ownertype99.2%39,706
ownername99.2%39,706
owneraddr99.2%39,705
ownercity99.2%39,699
ownerstate99.2%39,698
ownerzip99.1%39,692
parceladdr84.0%33,617
parcelcity82.2%32,900
parcelstate100%40,036
parcelzip100%40,036
legaldesc99.2%39,706
township99.9%40,007
section99.9%40,007
qtrsection99.9%40,007
range99.9%40,007
plssdesc99.9%40,007
book86.1%34,489
page86.1%34,489
block<0.1%0
lot<0.1%0
parceltype11.2%4,470
accesstype11.3%4,510
iucnclass8.9%3,582
placename15.1%6,054
placetype15.0%6,013
firmid99.7%39,913
firmdate99.7%39,913
fldzone99.7%39,913
zonesubty53.2%21,318
staticbfe<0.1%0
elevmin86.8%34,771
elevmax86.8%34,771
elevavg86.8%34,771
fireplaces9.6%3,844
heating58.6%23,460
heatfuel58.6%23,460
cooling58.6%23,460
foundation58.6%23,460
roofcover54.6%21,844
siding58.6%23,460
bldgtype<0.1%0
naicscode20.4%8,186
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%40,036
centroidx100%40,036
centroidy100%40,036
surfpointx100%40,036
surfpointy100%40,036
geom100%40,036
extras100%40,036
ownerlist98.2%39,334
placefp67.6%27,058
zoningurl31.2%12,506
lbcsactivity71.2%28,509
lbcsfunction57.3%22,957
lbcstype72.8%29,157
lbcscharacter96.8%38,762
lbcsownership99.3%39,748
sourceurl90.7%36,309

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) 3 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 ADDRESS building place_type landmkname add_number st_premod st_predir st_pretyp st_presep st_name st_postyp st_posdir st_posmod unit floor post_code nbrhd_comm post_comm county state country geom discrpagid dateupdate effective expire inc_muni uninc_comm addnum_pre addnum_suf lst_predir lst_name lst_posdir room seat addtl_loc placement mt_plctype parcelid localid addtl_desc gnis_id datasettyp processid processdte globalid nguid lst_typ postcodeex milepost longitude latitude elevation house category near house_number road unit level postcode suburb city state_district state country geom extras PARCEL parcelid globalid propertyid taxyear assessmentcode proptype totalbuildingvalue totallandvalue totalvalue totalacres ownername owneraddress1 owneraddress2 owneraddress3 ownercity ownerstate ownerzipcode addressline1 legaldescriptionshort township section range geom levydistrict countycd countyname countyabbr gisacres subdivision certificateofsurvey addressline2 citystatezip propaccess continuouscropacres fallowacres farmsiteacres forestacres grazingacres wildhayacres irrigatedacres nonqualacres dbaname careoftaxpayer parcelid parcelid2 taxacctnum taxyear usecode usedesc imprvalue landvalue totalvalue taxacres ownername owneraddr ownercity ownerstate ownerzip parceladdr legaldesc township section range geom taxdistrict extras ZONING zoning geom 9 cols ⇢ zoningcode 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 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 53.2% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 100% numbldgs 71.0% numunits 58.6% yearbuilt 58.8% numfloors 58.6% bldgsqft 58.2% bedrooms 57.7% fullbaths 86.5% saledate 82.2% parcelcity 100% parcelstate 100% parcelzip 100% qtrsection 100% plssdesc 86.1% book 86.1% page 58.6% heating 58.6% heatfuel 58.6% cooling 58.6% foundation 54.6% roofcover 58.6% siding 98.2% ownerlist 67.6% placefp 71.2% lbcsactivity 57.3% lbcsfunction 72.8% lbcstype 96.8% lbcscharacter 99.3% lbcsownership 90.7% sourceurl lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode usedesc zoningcode 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 lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership sourceurl publish.parcel_layer columns not fed by these sources (23) — empty or below 50% fill in this county parentid, stackid, zoningdesc, halfbaths, agvalue, saleamt, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe fireplaces, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, zoningurl ADDRESS 15 mapped · 2 transformed · 7 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ADDRESS building place_type landmkname add_number st_premod st_predir st_pretyp st_presep st_name st_postyp st_posdir st_posmod unit floor post_code nbrhd_comm post_comm county state country geom discrpagid dateupdate effective expire inc_muni uninc_comm addnum_pre addnum_suf lst_predir lst_name lst_posdir room seat addtl_loc placement mt_plctype parcelid localid addtl_desc gnis_id datasettyp processid processdte globalid nguid lst_typ postcodeex milepost longitude latitude elevation house category near house_number road NULLIF(TRIM(BOTH FROM concat_ws(' ', st_premod::text, st_predir… unit level postcode suburb city state_district state country geom extras ( json_build_object( 'discrpagid', discrpagid::text, 'dateupdat… not present in source — filled with NULL (7) staircase, entrance, po_box, city_district, island, country_region, world_region PARCEL 23 mapped · 16 transformed · 32 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid globalid propertyid taxyear assessmentcode proptype totalbuildingvalue totallandvalue totalvalue totalacres ownername owneraddress1 owneraddress2 owneraddress3 ownercity ownerstate ownerzipcode addressline1 legaldescriptionshort township section range geom levydistrict countycd countyname countyabbr gisacres subdivision certificateofsurvey addressline2 citystatezip propaccess continuouscropacres fallowacres farmsiteacres forestacres grazingacres wildhayacres irrigatedacres nonqualacres dbaname careoftaxpayer parcelid NULLIF(TRIM(parcelid), '')::text parcelid2 NULLIF(TRIM(globalid), '')::text taxacctnum taxyear usecode NULLIF(TRIM(assessmentcode), '')::text usedesc NULLIF(TRIM(proptype), '')::text imprvalue landvalue totalvalue taxacres ownername NULLIF(TRIM(ownername), '')::text owneraddr NULLIF(CONCAT_WS(', ', NULLIF(TRIM(owneraddress1), ''), NULLIF(… ownercity NULLIF(TRIM(ownercity), '')::text ownerstate NULLIF(TRIM(ownerstate), '')::text ownerzip NULLIF(TRIM(ownerzipcode), '')::text parceladdr NULLIF(TRIM(addressline1), '')::text legaldesc NULLIF(TRIM(legaldescriptionshort), '')::text township NULLIF(TRIM(township), '')::text section NULLIF(TRIM(section), '')::text range NULLIF(TRIM("range"), '')::text geom taxdistrict NULLIF(TRIM(levydistrict), '')::text extras json_build_object( 'countycd', countycd::text, 'countyname', NU… not present in source — filled with NULL (32) 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, heatfuel, fireplaces, heating cooling, foundation, roofcover, siding ZONING 2 mapped · 9 kept in extras · 7 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING zoning geom zoningcode geom extras · 9 source columns preserved as json parcelid, lot_size, city, lot_width, zoning_allows lot_size_allows, lot_width_allows, units_allowed, category extras not present in source — filled with NULL (7) zoningdesc, zoningtype, ordinance, setbacks, restrictions, notes, sourceurl

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 40,036 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