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Johnson County, IA Parcels & GIS Data

Johnson County, IA parcel data: 74,132 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Johnson County, Iowa parcel data covering 74,132 property records.

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

Johnson County is located in the U.S. state of Iowa. As of the 2020 census, the population was 152,854, and was estimated to be 160,044 in 2025, making it the fourth-most populous county in Iowa. The county seat and the largest city is Iowa City, home of the University of Iowa.

FIPS 19103

Official county website: http://www.johnson-county.com

The FIPS code for Johnson County is 19103.

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Attribute coverage

Johnson County contains 74,132 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%74,132
parcelid100%74,132
parcelid271.3%52,872
ogparcelid100%74,132
ogparcelid2100%74,132
parentid<0.1%0
stackid<0.1%0
geoid100%74,132
statefp100%74,132
countyfp100%74,132
countyname100%74,132
cousubfp100%74,132
cousubname100%74,132
tractce100%74,132
tractname100%74,132
taxacctnum<0.1%0
taxyear<0.1%32
taxdistrict<0.1%0
usecode<0.1%11
usedesc<0.1%11
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs82.0%60,795
numunits<0.1%12
yearbuilt<0.1%0
numfloors<0.1%3
bldgsqft<0.1%4
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue98.8%73,248
landvalue98.8%73,248
agvalue98.8%73,258
totalvalue98.8%73,248
taxacres51.8%38,406
calcarea100%74,132
saleamt<0.1%0
saledate<0.1%2
ownertype63.7%47,256
ownername63.7%47,256
owneraddr63.0%46,685
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr100%74,132
parcelcity90.8%67,343
parcelstate100%74,132
parcelzip100%74,132
legaldesc<0.1%31
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%17
page<0.1%0
block<0.1%2
lot<0.1%10
parceltype1.7%1,258
accesstype1.7%1,258
iucnclass0.2%161
placename14.3%10,623
placetype13.9%10,319
firmid100%74,132
firmdate100%74,132
fldzone100%74,132
zonesubty97.2%72,058
staticbfe0.2%166
elevmin99.9%74,036
elevmax99.9%74,036
elevavg99.9%74,036
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
naicscode26.9%19,954
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%74,132
centroidx100%74,132
centroidy100%74,132
surfpointx100%74,132
surfpointy100%74,132
geom100%74,132
extras100%74,132
lrversion100%74,132

Schema mapping

How source columns from the acquired Johnson 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 — Johnson County, Iowa (19103) 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 parcelid parcelid2 totalvalue taxacres ownername owneraddr parceladdr geom parentid 2 cols ⇢ parcelid parcelid2 totalvalue taxacres ownername owneraddr parceladdr geom parentid 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 97.2% zonesubty 0.2% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 82.0% numbldgs 98.8% imprvalue 98.8% landvalue 98.8% agvalue 90.8% parcelcity 100% parcelstate 100% parcelzip lrid parcelid parcelid2 ogparcelid ogparcelid2 parentid geoid statefp countyfp countyname cousubfp cousubname tractce tractname numbldgs imprvalue landvalue agvalue totalvalue taxacres calcarea ownertype ownername owneraddr parceladdr parcelcity parcelstate parcelzip firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras lrversion publish.parcel_layer columns not fed by these sources (49) — empty or below 50% fill in this county stackid, taxacctnum, taxyear, taxdistrict, usecode, usedesc, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft, bedrooms halfbaths, fullbaths, saleamt, saledate, ownercity, ownerstate, ownerzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page block, lot, parceltype, accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit PARCEL 9 mapped · 2 kept in extras · 45 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid parcelid2 totalvalue taxacres ownername owneraddr parceladdr geom parentid parcelid parcelid2 totalvalue taxacres ownername owneraddr parceladdr geom parentid extras · 2 source columns preserved as json ogparcelid, geoid extras not present in source — filled with NULL (45) taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, saleamt, saledate, ownercity, ownerstate, ownerzip, parcelcity, parcelstate, parcelzip, legaldesc township, section, qtrsection, range, plssdesc, book, page, block, lot, updated, sourceurl, taxdistrict, fireplaces, heating, cooling foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Johnson County:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated