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Hamilton County, IA Parcels & GIS Data

Hamilton County, IA parcel data: 21,681 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Hamilton County, Iowa parcel data covering 21,681 property records.

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

Hamilton County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 15,039, and was estimated to be 14,944 in 2025. The county seat and the largest city is Webster City.

FIPS 19079

Official county website: http://www.hamiltoncounty.org

The FIPS code for Hamilton County is 19079.

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Attribute coverage

Hamilton County contains 21,681 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%21,681
parcelid100%21,681
parcelid267.3%14,585
ogparcelid100%21,681
ogparcelid211.1%2,410
parentid<0.1%0
stackid<0.1%0
geoid100%21,681
statefp100%21,681
countyfp100%21,681
countyname100%21,681
cousubfp100%21,681
cousubname100%21,681
tractce100%21,681
tractname100%21,681
taxacctnum<0.1%0
taxyear100%21,681
taxdistrict<0.1%0
usecode<0.1%1
usedesc66.7%14,468
zoningcode25.0%5,424
zoningdesc25.0%5,424
numbldgs29.7%6,449
numunits22.3%4,839
yearbuilt<0.1%0
numfloors21.1%4,580
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue87.9%19,056
landvalue87.9%19,056
agvalue87.9%19,056
totalvalue87.9%19,056
taxacres61.6%13,348
calcarea100%21,681
saleamt<0.1%0
saledate<0.1%0
ownertype99.1%21,485
ownername99.1%21,485
owneraddr63.9%13,859
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr52.2%11,321
parcelcity10.7%2,321
parcelstate100%21,681
parcelzip100%21,681
legaldesc<0.1%0
township100%21,678
section100%21,678
qtrsection100%21,678
range100%21,678
plssdesc100%21,678
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.4%95
accesstype0.9%193
iucnclass0.7%153
placename3.1%675
placetype3.1%663
firmid100%21,677
firmdate100%21,677
fldzone100%21,677
zonesubty96.1%20,826
staticbfe<0.1%1
elevmin99.9%21,651
elevmax99.9%21,651
elevavg99.9%21,651
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
naicscode22.6%4,910
frsid<0.1%2
dfrurl<0.1%2
caapermit<0.1%2
cwapermit<0.1%2
rcrapermit<0.1%2
updated78.7%17,057
centroidx100%21,681
centroidy100%21,681
surfpointx100%21,681
surfpointy100%21,681
geom100%21,681
extras100%21,681
ownerlist55.3%11,998
placefp40.5%8,770
zoningurl25.0%5,414
lbcsactivity78.1%16,930
lbcsfunction78.1%16,928
lbcstype77.8%16,871
lbcscharacter99.2%21,507
lbcsownership99.1%21,488
sourceurl<0.1%0

Schema mapping

How source columns from the acquired Hamilton 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 — Hamilton County, Iowa (19079) 2 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 PARCEL parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid 2 cols ⇢ parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid extras ZONING geom zoning districtnamefull classtype zoningnotes 254 cols ⇢ geom zoningcode zoningdesc zoningtype notes extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% taxyear 78.7% updated 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 96.1% zonesubty 0.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 66.7% usedesc 87.9% imprvalue 87.9% landvalue 87.9% agvalue 63.9% owneraddr 100% parcelstate 100% parcelzip 100% township 100% section 100% qtrsection 100% range 100% plssdesc 55.3% ownerlist 78.1% lbcsactivity 78.1% lbcsfunction 77.8% lbcstype 99.2% lbcscharacter 99.1% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 parentid geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usedesc zoningcode zoningdesc imprvalue landvalue agvalue totalvalue taxacres calcarea ownertype ownername owneraddr parceladdr parcelstate parcelzip township section qtrsection range plssdesc firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (45) — empty or below 50% fill in this county stackid, taxacctnum, taxdistrict, usecode, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, saleamt saledate, ownercity, ownerstate, ownerzip, parcelcity, legaldesc, book, page, block, lot, parceltype, accesstype, iucnclass, placename placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit rcrapermit, placefp, zoningurl, sourceurl PARCEL 8 mapped · 7 transformed · 2 kept in extras · 46 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid parcelid2 totalvalue taxacres ownername parceladdr geom parentid parcelid NULLIF(TRIM(parcelid::text), '')::text parcelid2 NULLIF(TRIM(parcelid2::text), '')::text totalvalue NULLIF(TRIM(totalvalue::text), '')::text taxacres NULLIF(TRIM(taxacres::text), '')::text ownername NULLIF(TRIM(ownername::text), '')::text parceladdr CASE WHEN upper(left(TRIM(parceladdr::text), 6)) = 'ACRES:' THE… geom parentid NULLIF(TRIM(parentid::text), '')::text extras · 2 source columns preserved as json ogparcelid, geoid extras not present in source — filled with NULL (46) taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip, parcelcity, parcelstate, parcelzip legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot, updated, sourceurl, taxdistrict, heatfuel, fireplaces heating, cooling, foundation, roofcover, siding ZONING 5 mapped · 254 kept in extras · 4 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING geom zoning districtnamefull classtype zoningnotes geom zoningcode zoningdesc zoningtype notes extras · 254 source columns preserved as json zoning_join, city, source, fips7, acres, districtmapped districtmappedextinct, districtoverlay isrestrictedresidencedistrict, zoningtype districtoverlayalters, districtisplanneddev, family1treatment family1minlotsize, family1frontsetback, family1sidesetback family1rearsetback, family1maxcoveragebldgimperv family1minparking, family1parkingunit, family1maxstories family1maxheight, family1ftar, family1minunitsize family1maxbedrooms, family1landscaping, family1minfrontage family2treatment, family2minlotsize, family2maxdensity family2frontsetback, family2sidesetback, family2rearsetback family2maxcoveragebldgimperv, family2minparking family2maxstories, family2maxheight, family2ftar family2minunitsize, family2maxbedrooms, family2landscaping family2minfrontage, family2parkingunit, family3treatment family3minlotsize, family3maxdensity, family3frontsetback family3sidesetback, family3rearsetback family3maxcoveragebldgimperv, family3minparking family3connectiontransit, family3maxstories, family3maxheight family3ftar, family3minunitsize, family3maxbedrooms family3landscaping, family3minfrontage, family3parkingunit family4treatment, family4minlotsize, family4maxdensity family4frontsetback, family4sidesetback, family4rearsetback family4maxcoveragebldgimperv, family4minparking family4connectionsewer, family4maxstories, family4maxheight family4ftar, family4minunitsize, family4maxbedrooms family4maxunitsbldg, family4maxunitsdev, family4minfrontage family4parkingunit, family4landscaping, family5treatment family5minlotsize, family5minfrontage, family5maxdensity family5frontsetback, family5sidesetback, family5rearsetback family5maxcoveragebldgimperv, family5minparking family5parkingunit, family5connectionsewer family5connectiontransit, family5maxstories, family5maxheight family5ftar, family5minunitsize, family5maxbedrooms family5maxunitsbldg, family5maxunitsdev, family5landscaping family6treatment, family6minlotsize, family6minfrontage family6maxdensity, family6frontsetback, family6sidesetback family6rearsetback, family6maxcoveragebldgimperv family6minparking, family6parkingunit family6connectiontransit, family6maxstories, family6maxheight family6ftar, family6minunitsize, family6maxbedrooms family6maxunitsbldg, family6maxunitsdev, family6landscaping family7treatment, family7minlotsize, family7minfrontage family7maxdensity, family7frontsetback, family7sidesetback family7rearsetback, family7maxcoveragebldgimperv family7minparking, family7parkingunit, family7connectionsewer family7connectiontransit, family7maxstories, family7maxheight family7ftar, family7minunitsize, family7maxbedrooms family7maxunitsbldg, family7maxunitsdev, family7landscaping family8treatment, family8minlotsize, family8minfrontage family8maxdensity, family8frontsetback, family8sidesetback family8rearsetback, family8maxcoveragebldgimperv family8minparking, family8parkingunit family8connectiontransit, family8maxstories, family8maxheight family8ftar, family8minunitsize, family8maxbedrooms family8maxunitsbldg, family8maxunitsdev, family8landscaping family9treatment, family9affordable, family9minlotsize family9maxdensity, family9frontsetback, family9sidesetback family9rearsetback, family9maxcoveragebldgimperv family9minparking, family9connectiontransit family9maxstories, family9maxheight, family9ftar family9minunitsize, family9maxbedrooms, family9maxunitsbldg family9maxunitsbldgunits, family9maxunitsdev family9landscaping, family9minfrontage, family9parkingunit afftreatment, affminlotsize, aff2maxdensity, affminparking affconnectiontransit, affmaxbedrooms, affmaxunitsbldg affmaxunitsdev, afflandscaping, affminfrontage affparkingunit, affregulationdesc, adutreatment aduoccupancyfamily, aduoccupancyrenter, aduoccupancyowner aduelderly, aduminlotsize, aduminparking adurestrictedtoprimary, adusizeperc, adusizepercunit adumaxbedrooms, adurequirelotsize, adurequireminsize adurequiremaxsize, adurequireparking, adusizepercvalue adumaxbedroomsvalue, mobileparktreatment mobileparkminparksize, mobileparkminlotsize mobileparkmaxparksize, mobilehometreatment mobilehomeregulations, manufacturedhometreatment manufacturedhomeregulations, tinyhometreatment tinyhomethreshold, tinyhomeregulations, liveworktreatment planneddevsize, planneddevreferences planneddevreferenceslist, planneddevdensityregulated planneddevdensity, planneddevdensitytype, planneddevmixeduse manuparktreatment, manuparkminparksize, manuparkmaxparksize manuparkminlotsize, grptreatment, grpregulationdesc smallgrpbyright, smallgrpbypermit, biggrpbyright biggrpbypermit, grpminlotsize, grpminfrontage, grp2maxdensity grpminparking, grpparkingunit, grpmaxbedrooms grpmaxunitsbldg, grpmaxunitsdev, grplandscaping, pudtreatment pudminsize, puddensity, pudmixeduse, liveworkdefinition grpdefinition, tinyhomedefinition, affdefinition, city_class extras not present in source — filled with NULL (4) ordinance, setbacks, restrictions, sourceurl

Neighboring counties

Parcel data for counties bordering Hamilton County:

Frequently asked questions

Where can I find Hamilton County, IA parcel and GIS data?

Land Records publishes a Hamilton County, IA 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 Hamilton County, IA dataset as a GeoPackage or CSV.

How many parcels are in Hamilton County, IA?

The current dataset contains 21,681 parcel records for Hamilton County, IA, each with its boundary geometry and assessor attributes.

What is the FIPS code for Hamilton County, IA?

The FIPS code for Hamilton County, IA is 19079.

What information does each Hamilton County, IA parcel record include?

Each Hamilton County, IA 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 Hamilton County, IA parcel data free?

You can preview Hamilton County, IA 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 Hamilton County, IA have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated