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DeKalb County, IL Parcels & GIS Data

DeKalb County, IL parcel data: 43,102 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes DeKalb County, Illinois parcel data covering 43,102 property records.

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

DeKalb County is a county located in the U.S. state of Illinois. As of the 2020 United States census, the population was 100,420. Its county seat is Sycamore.

FIPS 17037

Official county website: http://dekalbcounty.org/

The FIPS code for DeKalb County is 17037.

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Attribute coverage

DeKalb County contains 43,102 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%43,102
parcelid100%43,102
parcelid2<0.1%0
ogparcelid100%43,102
ogparcelid2<0.1%0
parentid<0.1%0
stackid<0.1%0
geoid100%43,102
statefp100%43,102
countyfp100%43,102
countyname100%43,102
cousubfp100%43,102
cousubname100%43,102
tractce100%43,102
tractname100%43,102
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode93.1%40,146
usedesc<0.1%0
zoningcode52.0%22,398
zoningdesc0.7%308
numbldgs96.7%41,683
numunits92.7%39,970
yearbuilt<0.1%0
numfloors<0.1%0
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue92.7%39,950
landvalue92.7%39,970
agvalue92.7%39,970
totalvalue92.7%39,970
taxacres91.8%39,548
calcarea100%43,102
saleamt<0.1%0
saledate<0.1%0
ownertype100%43,081
ownername100%43,102
owneraddr100%43,102
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr100%43,102
parcelcity94.7%40,822
parcelstate100%43,102
parcelzip100%43,102
legaldesc<0.1%0
township100%43,091
section100%43,091
qtrsection100%43,091
range100%43,091
plssdesc100%43,091
book<0.1%0
page100%43,102
block<0.1%0
lot<0.1%0
parceltype0.7%299
accesstype0.7%299
iucnclass0.1%40
placename5.0%2,144
placetype4.9%2,104
firmid100%43,102
firmdate100%43,102
fldzone100%43,102
zonesubty98.1%42,282
staticbfe<0.1%8
elevmin66.9%28,850
elevmax66.9%28,850
elevavg66.9%28,850
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
naicscode4.2%1,831
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%43,102
centroidx100%43,102
centroidy100%43,102
surfpointx100%43,102
surfpointy100%43,102
geom100%43,102
extras100%43,102
ownerlist99.7%42,961
placefp72.5%31,242
zoningurl33.3%14,353
lbcsactivity32.2%13,860
lbcsfunction32.1%13,855
lbcstype31.7%13,680
lbcscharacter97.3%41,959
lbcsownership100%43,086
sourceurl100%43,102

Schema mapping

How source columns from the acquired DeKalb 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 — DeKalb County, Illinois (17037) 1 entity · 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 ZONING geom zone_code ordinance notes township id underlyingzone_code expirationdate geom zoningcode ordinance notes 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 66.9% elevmin 66.9% elevmax 66.9% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 98.1% zonesubty 0.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 100% parcelid 100% ogparcelid 93.1% usecode 96.7% numbldgs 92.7% numunits 92.7% imprvalue 92.7% landvalue 92.7% agvalue 92.7% totalvalue 91.8% taxacres 100% ownertype 100% ownername 100% owneraddr 100% parceladdr 94.7% parcelcity 100% parcelstate 100% parcelzip 100% township 100% section 100% qtrsection 100% range 100% plssdesc 100% page 100% ownerlist 72.5% placefp 97.3% lbcscharacter 100% lbcsownership 100% sourceurl lrid parcelid ogparcelid geoid statefp countyfp countyname cousubfp cousubname tractce tractname usecode zoningcode numbldgs numunits imprvalue landvalue agvalue totalvalue taxacres calcarea ownertype ownername owneraddr parceladdr parcelcity parcelstate parcelzip township section qtrsection range plssdesc page firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp lbcscharacter lbcsownership sourceurl publish.parcel_layer columns not fed by these sources (47) — empty or below 50% fill in this county parcelid2, ogparcelid2, parentid, stackid, taxacctnum, taxyear, taxdistrict, usedesc, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms halfbaths, fullbaths, saleamt, saledate, ownercity, ownerstate, ownerzip, legaldesc, book, block, lot, parceltype, accesstype, iucnclass placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit cwapermit, rcrapermit, zoningurl, lbcsactivity, lbcsfunction, lbcstype ZONING 5 mapped · 4 transformed · 5 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING geom zone_code ordinance notes township id underlyingzone_code expirationdate geom zoningcode NULLIF(zone_code::text, '')::text ordinance NULLIF(ordinance::text, '')::text notes NULLIF(notes::text, '')::text extras json_build_object( 'township', NULLIF(township::text, ''), 'id'… not present in source — filled with NULL (5) zoningdesc, zoningtype, setbacks, restrictions, sourceurl

Neighboring counties

Parcel data for counties bordering DeKalb County:

Frequently asked questions

Where can I find DeKalb County, IL parcel and GIS data?

Land Records publishes a DeKalb County, IL 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 DeKalb County, IL dataset as a GeoPackage or CSV.

How many parcels are in DeKalb County, IL?

The current dataset contains 43,102 parcel records for DeKalb County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for DeKalb County, IL?

The FIPS code for DeKalb County, IL is 17037.

What information does each DeKalb County, IL parcel record include?

Each DeKalb County, IL 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 DeKalb County, IL parcel data free?

You can preview DeKalb County, IL 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 DeKalb County, IL have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated