Land Records Logo

Land Records

Montgomery County, MD Parcels & GIS Data

Montgomery County, MD parcel data: 288,105 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Montgomery County, Maryland parcel data covering 288,105 property records.

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

Montgomery County is the most populous county in the U.S. state of Maryland. As of the 2020 United States census, the county's population was 1,062,061, increasing by 9.3% from 2010. The county seat is Rockville, while its most populous place is Germantown.

FIPS 24031

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

The FIPS code for Montgomery County is 24031.

ExploreBuyDownload Montgomery County data
HowardFrederickLoudounFairfaxArlingtonDistrict of ColumbiaPrince George'sMontgomery
Hosted Web API$200/mo

Attribute coverage

Montgomery County contains 288,105 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%288,105
parcelid6.5%18,747
parcelid26.5%18,701
ogparcelid6.5%18,749
ogparcelid26.5%18,684
parentid16.7%48,205
stackid<0.1%0
geoid100%288,105
statefp100%288,105
countyfp100%288,105
countyname100%288,105
cousubfp100%288,105
cousubname100%288,105
tractce100%288,105
tractname100%288,105
taxacctnum100%288,058
taxyear97.6%281,309
taxdistrict97.6%281,302
usecode97.9%281,962
usedesc97.9%281,926
zoningcode97.7%281,353
zoningdesc97.6%281,263
numbldgs100%288,053
numunits97.6%281,148
yearbuilt97.9%281,940
numfloors97.7%281,416
bldgsqft97.6%281,302
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue88.8%255,913
landvalue94.1%271,095
agvalue0.7%1,916
totalvalue<0.1%6
taxacres97.9%281,960
calcarea100%288,105
saleamt62.8%180,939
saledate75.2%216,749
ownertype97.6%281,273
ownername97.6%281,273
owneraddr97.6%281,288
ownercity97.6%281,307
ownerstate97.6%281,195
ownerzip97.6%281,216
parceladdr100%288,065
parcelcity99.9%287,740
parcelstate100%288,105
parcelzip100%288,105
legaldesc97.9%281,922
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book96.1%276,978
page96.1%276,975
block81.3%234,092
lot87.4%251,740
parceltype2.2%6,403
accesstype2.2%6,403
iucnclass1.1%3,272
placename5.4%15,457
placetype5.3%15,282
firmid100%288,102
firmdate100%288,102
fldzone100%288,102
zonesubty99.5%286,601
staticbfe<0.1%1
elevmin2.2%6,315
elevmax2.2%6,315
elevavg2.2%6,315
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
naicscode8.0%22,914
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%288,105
centroidx100%288,105
centroidy100%288,105
surfpointx100%288,105
surfpointy100%288,105
geom100%288,105
extras100%288,053
ownerlist97.1%279,832
placefp94.4%271,828
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Montgomery 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 — Montgomery County, Maryland (24031) 1 entity · most recent acquisition per entity · generated 2026-08-15 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 parcel polyid acctid ciuse descciuse zoning bldg_units yearblt bldg_story sqftstrc nfmimpvl nfmlndvl nfmttlvl acres considr1 tradate ownadd1 ownadd2 owncity ownstate ownerzip address city zipcode legal1 legal2 legal3 dr1liber dr1folio block lot sdatwebadr geom desctown jurscode geogcode ooi resityp strtnum strtdir strtnam strttyp strtsfx strtunt addrtyp ownzip2 premsnum premsdir premsnam premstyp premcity premzip premzip2 towncode subdivsn dsubcode descsubd plat pltliber pltfolio section map grid znchgdat rzrealdat exclass descexcl lu desclu landarea luom width depth pfuw pfus pflw pfsp pfsu pfic pfih recind permittyp strugrad descgrad strucnst desccnst strustyl descstyl strubldg descbldg lastinsp lastassd assessor gr1libr1 gr1folo1 convey1 crtarcod fcmacode agfndarea entzndat entznassm plndevdat nprctstdat nprcarea nprcluom homqlcod homqldat ptype mdpvdate sdatdate polydate polyacres shape_starea__ shape_stlength__ parcelid parcelid2 taxacctnum usecode usedesc zoningcode numunits yearbuilt numfloors bldgsqft imprvalue landvalue totalvalue taxacres saleamt saledate owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc book page block lot sourceurl geom taxdistrict extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 97.6% taxyear 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 2.2% elevmin 2.2% elevmax 2.2% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 99.5% zonesubty 0.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 97.6% zoningdesc 100% numbldgs 97.6% ownertype 97.6% ownername 97.1% ownerlist 94.4% placefp lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode usedesc zoningcode zoningdesc numbldgs numunits yearbuilt numfloors bldgsqft imprvalue landvalue totalvalue taxacres calcarea saleamt saledate ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc book page block lot firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp publish.parcel_layer columns not fed by these sources (31) — empty or below 50% fill in this county parentid, stackid, bedrooms, halfbaths, fullbaths, agvalue, township, section, qtrsection, range, plssdesc, parceltype, accesstype, iucnclass placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit cwapermit, rcrapermit, zoningurl PARCEL 33 mapped · 4 transformed · 22 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcel polyid acctid ciuse descciuse zoning bldg_units yearblt bldg_story sqftstrc nfmimpvl nfmlndvl nfmttlvl acres considr1 tradate ownadd1 ownadd2 owncity ownstate ownerzip address city zipcode legal1 legal2 legal3 dr1liber dr1folio block lot sdatwebadr geom desctown jurscode geogcode ooi resityp strtnum strtdir strtnam strttyp strtsfx strtunt addrtyp ownzip2 premsnum premsdir premsnam premstyp premcity premzip premzip2 towncode subdivsn dsubcode descsubd plat pltliber pltfolio section map grid znchgdat rzrealdat exclass descexcl lu desclu landarea luom width depth pfuw pfus pflw pfsp pfsu pfic pfih recind permittyp strugrad descgrad strucnst desccnst strustyl descstyl strubldg descbldg lastinsp lastassd assessor gr1libr1 gr1folo1 convey1 crtarcod fcmacode agfndarea entzndat entznassm plndevdat nprctstdat nprcarea nprcluom homqlcod homqldat ptype mdpvdate sdatdate polydate polyacres shape_starea__ shape_stlength__ parcelid parcelid2 taxacctnum usecode usedesc zoningcode numunits yearbuilt numfloors bldgsqft imprvalue landvalue totalvalue taxacres saleamt saledate owneraddr NULLIF(concat_ws(' ', NULLIF(ownadd1, ''), NULLIF(ownadd2, ''))… ownercity ownerstate ownerzip parceladdr parcelcity parcelstate 'MD'::text parcelzip legaldesc NULLIF(concat_ws('; ', NULLIF(legal1, ''), NULLIF(legal2, ''), … book page block lot sourceurl geom taxdistrict extras ( json_build_object( 'jurscode', jurscode::text, 'geogcode', ge… not present in source — filled with NULL (22) taxyear, zoningdesc, numbldgs, bedrooms, halfbaths, fullbaths, agvalue, ownername, township, section, qtrsection, range, plssdesc, updated parentid, fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Montgomery County:

Frequently asked questions

Where can I find Montgomery County, MD parcel and GIS data?

Land Records publishes a Montgomery County, MD 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 Montgomery County, MD dataset as a GeoPackage or CSV.

How many parcels are in Montgomery County, MD?

The current dataset contains 288,105 parcel records for Montgomery County, MD, each with its boundary geometry and assessor attributes.

What is the FIPS code for Montgomery County, MD?

The FIPS code for Montgomery County, MD is 24031.

What information does each Montgomery County, MD parcel record include?

Each Montgomery County, MD 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 Montgomery County, MD parcel data free?

You can preview Montgomery County, MD 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 Montgomery County, MD have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated