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Lewis and Clark County, MT Parcels & GIS Data

Lewis and Clark County, MT parcel data: 47,858 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 47,858 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

The FIPS code for Lewis and Clark County is 30049.

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Attribute coverage

Lewis and Clark County contains 47,858 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%47,858
parcelid99.4%47,565
parcelid2100%47,845
ogparcelid99.4%47,565
ogparcelid2100%47,845
parentid<0.1%0
stackid<0.1%0
geoid100%47,858
statefp100%47,858
countyfp100%47,858
countyname100%47,858
cousubfp100%47,858
cousubname100%47,858
tractce100%47,858
tractname100%47,858
taxacctnum99.3%47,513
taxyear100%47,858
taxdistrict99.3%47,518
usecode96.0%45,928
usedesc99.4%47,557
zoningcode29.9%14,295
zoningdesc40.0%19,127
numbldgs99.3%47,505
numunits70.3%33,625
yearbuilt56.4%27,005
numfloors56.6%27,092
bldgsqft56.4%27,005
bedrooms56.0%26,793
halfbaths10.8%5,157
fullbaths55.6%26,589
imprvalue94.5%45,242
landvalue99.2%47,497
agvalue<0.1%0
totalvalue99.2%47,497
taxacres99.3%47,513
calcarea100%47,858
saleamt<0.1%0
saledate84.1%40,245
ownertype99.3%47,518
ownername99.3%47,518
owneraddr99.3%47,517
ownercity99.2%47,499
ownerstate99.2%47,499
ownerzip99.2%47,499
parceladdr83.9%40,154
parcelcity81.7%39,106
parcelstate100%47,858
parcelzip100%47,858
legaldesc99.3%47,518
township99.9%47,825
section99.9%47,825
qtrsection99.9%47,825
range99.9%47,825
plssdesc99.9%47,825
book83.7%40,069
page83.7%40,069
block<0.1%0
lot<0.1%0
parceltype11.2%5,341
accesstype11.4%5,450
iucnclass8.9%4,255
placename15.2%7,261
placetype15.1%7,211
firmid99.7%47,725
firmdate99.7%47,725
fldzone99.7%47,725
zonesubty53.0%25,359
staticbfe<0.1%0
elevmin86.8%41,523
elevmax86.8%41,523
elevavg86.8%41,523
fireplaces9.1%4,369
heating56.4%27,005
heatfuel56.4%27,005
cooling56.4%27,005
foundation56.4%27,005
roofcover49.5%23,686
siding56.4%27,005
bldgtype<0.1%0
naicscode21.3%10,206
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated99.4%47,594
centroidx100%47,858
centroidy100%47,858
surfpointx100%47,858
surfpointy100%47,858
geom100%47,858
extras100%47,858
ownerlist97.5%46,653
placefp65.3%31,270
zoningurl29.4%14,069
lbcsactivity71.2%34,053
lbcsfunction57.6%27,551
lbcstype72.8%34,850
lbcscharacter96.8%46,344
lbcsownership99.4%47,560
sourceurl82.8%39,612

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 2026-10-10 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 99.4% 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 53.0% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 99.3% numbldgs 70.3% numunits 56.4% yearbuilt 56.6% numfloors 56.4% bldgsqft 56.0% bedrooms 55.6% fullbaths 84.1% saledate 81.7% parcelcity 100% parcelstate 100% parcelzip 100% qtrsection 100% plssdesc 83.7% book 83.7% page 56.4% heating 56.4% heatfuel 56.4% cooling 56.4% foundation 56.4% siding 97.5% ownerlist 65.3% placefp 71.2% lbcsactivity 57.6% lbcsfunction 72.8% lbcstype 96.8% lbcscharacter 99.4% lbcsownership 82.8% 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 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 (24) — empty or below 50% fill in this county parentid, stackid, zoningdesc, halfbaths, agvalue, saleamt, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe fireplaces, roofcover, 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 47,858 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.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated