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Lyon County, IA Parcels & GIS Data

Lyon County, IA parcel data: 11,661 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Lyon County, Iowa parcel data covering 11,661 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 11,661 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%11,661
parcelid99.9%11,652
parcelid291.3%10,646
ogparcelid100%11,658
ogparcelid291.6%10,680
parentid<0.1%0
stackid<0.1%0
geoid100%11,661
statefp100%11,661
countyfp100%11,661
countyname100%11,661
cousubfp100%11,661
cousubname100%11,661
tractce100%11,661
tractname100%11,661
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode99.2%11,562
usedesc<0.1%0
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs97.6%11,386
numunits97.4%11,358
yearbuilt<0.1%0
numfloors<0.1%0
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue97.4%11,358
landvalue97.4%11,358
agvalue97.4%11,358
totalvalue97.4%11,358
taxacres99.2%11,568
calcarea100%11,661
saleamt<0.1%0
saledate<0.1%0
ownertype98.9%11,532
ownername99.1%11,554
owneraddr99.2%11,562
ownercity99.0%11,549
ownerstate99.0%11,549
ownerzip99.0%11,549
parceladdr99.7%11,621
parcelcity99.2%11,565
parcelstate100%11,661
parcelzip100%11,661
legaldesc99.2%11,562
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.4%48
accesstype0.4%48
iucnclass0.4%44
placename3.3%381
placetype3.2%371
firmid100%11,660
firmdate100%11,660
fldzone100%11,660
zonesubty93.1%10,861
staticbfe<0.1%1
elevmin90.1%10,503
elevmax90.1%10,503
elevavg90.1%10,503
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
naicscode1.0%112
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%11,661
centroidx100%11,661
centroidy100%11,661
surfpointx100%11,661
surfpointy100%11,661
geom100%11,661
extras100%11,660
lrversion100%11,661

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) 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 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 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 90.1% elevmin 90.1% elevmax 90.1% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 93.1% zonesubty 0.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 100% parcelid 91.3% parcelid2 100% ogparcelid 91.6% ogparcelid2 99.2% usecode 97.6% numbldgs 97.4% numunits 97.4% imprvalue 97.4% landvalue 97.4% agvalue 97.4% totalvalue 99.2% taxacres 98.9% ownertype 99.1% ownername 99.2% owneraddr 99.0% ownercity 99.0% ownerstate 99.0% ownerzip 100% parceladdr 99.2% parcelcity 100% parcelstate 100% parcelzip 99.2% legaldesc lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname usecode numbldgs numunits imprvalue landvalue agvalue totalvalue taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc 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 (44) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxyear, taxdistrict, usedesc, zoningcode, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, saleamt, saledate, 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 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

Neighboring counties

Parcel data for counties bordering Lyon County:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated