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Howard County, MD Parcels & GIS Data

Howard County, MD parcel data: 85,044 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Howard County, Maryland parcel data covering 85,044 property records.

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

Howard County is located in the U.S. state of Maryland. As of the 2020 census, the population is 334,529. Since there are no incorporated municipalities, there is no incorporated county seat either.

FIPS 24027

Official county website: http://www.howardcountymd.gov/

The FIPS code for Howard County is 24027.

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Attribute coverage

Howard County contains 85,044 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%85,044
parcelid94.6%80,419
parcelid294.6%80,420
ogparcelid100%85,036
ogparcelid2100%85,037
parentid<0.1%0
stackid<0.1%0
geoid100%85,044
statefp100%85,044
countyfp100%85,044
countyname100%85,044
cousubfp100%85,044
cousubname100%85,044
tractce100%85,044
tractname100%85,044
taxacctnum<0.1%25
taxyear<0.1%4
taxdistrict<0.1%14
usecode<0.1%10
usedesc<0.1%9
zoningcode<0.1%4
zoningdesc<0.1%3
numbldgs100%85,044
numunits<0.1%5
yearbuilt<0.1%10
numfloors7.2%6,139
bldgsqft<0.1%9
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%1
landvalue<0.1%4
agvalue<0.1%1
totalvalue<0.1%1
taxacres<0.1%9
calcarea100%85,044
saleamt<0.1%3
saledate<0.1%3
ownertype94.9%80,686
ownername94.9%80,686
owneraddr92.4%78,570
ownercity94.9%80,686
ownerstate94.9%80,686
ownerzip94.9%80,682
parceladdr93.8%79,785
parcelcity93.8%79,778
parcelstate100%85,044
parcelzip100%85,044
legaldesc<0.1%10
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%8
page<0.1%8
block<0.1%2
lot<0.1%2
parceltype5.3%4,532
accesstype5.3%4,532
iucnclass1.3%1,098
placename8.6%7,334
placetype8.5%7,266
firmid100%85,041
firmdate100%85,041
fldzone100%85,041
zonesubty98.8%83,996
staticbfe<0.1%0
elevmin99.8%84,876
elevmax99.8%84,876
elevavg99.8%84,876
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
naicscode13.2%11,188
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%85,044
centroidx100%85,044
centroidy100%85,044
surfpointx100%85,044
surfpointy100%85,044
geom100%85,044
extras100%85,044
lrversion100%85,044

Schema mapping

How source columns from the acquired Howard 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 — Howard County, Maryland (24027) 1 entity · most recent acquisition per entity · generated 2026-07-13 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 apn search_apn owner_firstname owner_lastname owner_st_number owner_st_dir owner_st_name owner_st_type owner_st_unit owner_city owner_state owner_zip site_st_number site_st_dir site_st_name site_st_type site_st_unit site_city site_state site_zip geom 7 cols ⇢ parcelid parcelid2 ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip 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 100% lrversion geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 98.8% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 100% numbldgs lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname numbldgs calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras lrversion publish.parcel_layer columns not fed by these sources (53) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxyear, taxdistrict, usecode, usedesc, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft bedrooms, halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, taxacres, saleamt, saledate, legaldesc, township, section qtrsection, range, plssdesc, book, page, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe, fireplaces, heating heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit PARCEL 12 mapped · 3 transformed · 7 kept in extras · 42 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL apn search_apn owner_firstname owner_lastname owner_st_number owner_st_dir owner_st_name owner_st_type owner_st_unit owner_city owner_state owner_zip site_st_number site_st_dir site_st_name site_st_type site_st_unit site_city site_state site_zip geom parcelid parcelid2 ownername CAST(COALESCE(owner_firstname, '') || ' ' || COALESCE(owner_las… owneraddr CAST(COALESCE(owner_st_number, '') || ' ' || COALESCE(owner_st_… ownercity ownerstate ownerzip parceladdr CAST(COALESCE(site_st_number, '') || ' ' || COALESCE(site_st_di… parcelcity parcelstate parcelzip geom extras · 7 source columns preserved as json site_st_post_dir, clientid, shape_starea__, shape_stlength__ stagingid, oldglobalid, globalid extras not present in source — filled with NULL (42) taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, totalvalue, taxacres, saleamt, saledate, legaldesc, township, section, qtrsection, range, plssdesc book, page, block, lot, updated, sourceurl, taxdistrict, parentid, fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Howard County:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated