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Lyon County, IA Parcels & GIS Data

Lyon County, IA parcel data: 11,908 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Lyon County, Iowa parcel data covering 11,908 property records.

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

Lyon County is the most northwestern county of the U.S. state of Iowa. As of the 2020 census, the population was 11,934. The county seat is Rock Rapids.

FIPS 19119

Official county website: http://www.lyoncountyiowa.com

The FIPS code for Lyon County is 19119.

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Attribute coverage

Lyon County contains 11,908 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%11,908
parcelid99.9%11,901
parcelid288.6%10,554
ogparcelid100%11,907
ogparcelid288.9%10,588
parentid<0.1%0
stackid<0.1%0
geoid100%11,908
statefp100%11,908
countyfp100%11,908
countyname100%11,908
cousubfp100%11,908
cousubname100%11,908
tractce100%11,908
tractname100%11,908
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode96.0%11,428
usedesc<0.1%5
zoningcode84.6%10,080
zoningdesc80.2%9,549
numbldgs0.7%79
numunits0.5%55
yearbuilt<0.1%0
numfloors<0.1%0
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue99.1%11,796
landvalue99.1%11,796
agvalue99.1%11,796
totalvalue99.1%11,796
taxacres98.4%11,715
calcarea100%11,908
saleamt<0.1%0
saledate<0.1%0
ownertype99.2%11,818
ownername99.2%11,818
owneraddr93.7%11,157
ownercity95.9%11,417
ownerstate95.9%11,417
ownerzip95.9%11,417
parceladdr99.0%11,791
parcelcity95.3%11,343
parcelstate100%11,908
parcelzip100%11,908
legaldesc96.0%11,428
township100%11,908
section100%11,908
qtrsection100%11,908
range100%11,908
plssdesc100%11,908
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.2%19
accesstype0.4%44
iucnclass0.3%40
placename3.2%380
placetype3.1%369
firmid100%11,907
firmdate100%11,907
fldzone100%11,907
zonesubty93.1%11,092
staticbfe<0.1%0
elevmin90.6%10,783
elevmax90.6%10,783
elevavg90.6%10,783
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
naicscode14.8%1,766
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated99.8%11,884
centroidx100%11,908
centroidy100%11,908
surfpointx100%11,908
surfpointy100%11,908
geom100%11,908
extras100%11,908
ownerlist47.6%5,673
placefp38.0%4,529
zoningurl82.1%9,778
lbcsactivity99.4%11,842
lbcsfunction99.4%11,840
lbcstype99.4%11,842
lbcscharacter100%11,907
lbcsownership99.2%11,818
sourceurl<0.1%0

Schema mapping

How source columns from the acquired Lyon 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 — Lyon County, Iowa (19119) 3 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 ADDRESS landmark anumber st_name sub_id1 zip ctu_name postcomm co_name state_code geom 44 cols ⇢ near house_number road unit postcode suburb city state_district state geom extras 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% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 90.6% elevmin 90.6% elevmax 90.6% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 93.1% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 96.0% usecode 99.1% imprvalue 99.1% landvalue 99.1% agvalue 93.7% owneraddr 95.9% ownercity 95.9% ownerstate 95.9% ownerzip 95.3% parcelcity 100% parcelstate 100% parcelzip 96.0% legaldesc 100% township 100% section 100% qtrsection 100% range 100% plssdesc 82.1% zoningurl 99.4% lbcsactivity 99.4% lbcsfunction 99.4% lbcstype 100% lbcscharacter 99.2% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 parentid geoid statefp countyfp countyname cousubfp cousubname tractce tractname usecode zoningcode zoningdesc imprvalue landvalue agvalue totalvalue taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township section qtrsection range plssdesc firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras zoningurl lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (42) — empty or below 50% fill in this county stackid, taxacctnum, taxyear, taxdistrict, usedesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, saleamt saledate, book, page, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe, fireplaces, heating, heatfuel, cooling foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, ownerlist, placefp, sourceurl ADDRESS 10 mapped · 44 kept in extras · 11 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ADDRESS landmark anumber st_name sub_id1 zip ctu_name postcomm co_name state_code geom near house_number road unit postcode suburb city state_district state geom extras · 44 source columns preserved as json add_id, add_id_loc, anumberpre, anumbersuf, st_pre_mod st_pre_dir, st_pre_typ, st_pre_sep, st_pos_typ, st_pos_dir st_pos_mod, sub_type1, sub_type2, sub_id2, zip4, ctu_id_txt co_code, loc_desc, residence, mailable, state_pin, place_loc cen_geo, uni_wo_sub, longitude, latitude, usng_code gis911poc, esn, psap_code, msag_c, verror_911, lst_predir lst_name, lst_type, lst_posdir, status, eff_date, ret_date source, aauthority, edit_org, edit_date, comments extras not present in source — filled with NULL (11) house, category, level, staircase, entrance, po_box, city_district, island, country_region, country, world_region 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(parcelid::text, '') parcelid2 NULLIF(parcelid2::text, '') totalvalue NULLIF(totalvalue::text, '') taxacres NULLIF(taxacres::text, '') ownername NULLIF(ownername::text, '') parceladdr NULLIF(parceladdr::text, '') geom parentid NULLIF(parentid::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 Lyon County:

Frequently asked questions

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

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

How many parcels are in Lyon County, IA?

The current dataset contains 11,908 parcel records for Lyon County, IA, each with its boundary geometry and assessor attributes.

What is the FIPS code for Lyon County, IA?

The FIPS code for Lyon County, IA is 19119.

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

Each Lyon 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 Lyon County, IA parcel data free?

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

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

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