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Williams County, OH Parcels & GIS Data

Williams County, OH parcel data: 25,941 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Williams County, Ohio parcel data covering 25,941 property records.

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

Williams County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 37,102, and was estimated to be 36,549 in 2025. The county seat and the largest city is Bryan.

FIPS 39171

Official county website: http://www.co.williams.oh.us

The FIPS code for Williams County is 39171.

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Attribute coverage

Williams County contains 25,941 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%25,941
parcelid100%25,934
parcelid299.3%25,772
ogparcelid100%25,941
ogparcelid2100%25,941
parentid<0.1%0
stackid<0.1%0
geoid100%25,941
statefp100%25,941
countyfp100%25,941
countyname100%25,941
cousubfp100%25,941
cousubname100%25,941
tractce100%25,941
tractname100%25,941
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode<0.1%0
usedesc<0.1%0
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs100%25,940
numunits<0.1%0
yearbuilt<0.1%0
numfloors<0.1%3
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%0
landvalue<0.1%0
agvalue<0.1%0
totalvalue<0.1%0
taxacres99.3%25,763
calcarea100%25,941
saleamt<0.1%0
saledate<0.1%0
ownertype99.3%25,756
ownername99.3%25,756
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr61.9%16,060
parcelcity61.8%16,041
parcelstate100%25,941
parcelzip100%25,941
legaldesc<0.1%0
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
parceltype0.9%240
accesstype0.9%240
iucnclass0.3%87
placename4.6%1,205
placetype4.6%1,182
firmid<0.1%0
firmdate<0.1%0
fldzone<0.1%0
zonesubty<0.1%0
staticbfe<0.1%0
elevmin98.6%25,577
elevmax98.6%25,577
elevavg98.6%25,577
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
naicscode22.5%5,838
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%25,940
centroidx100%25,941
centroidy100%25,941
surfpointx100%25,941
surfpointy100%25,941
geom100%25,941
extras100%25,941
lrversion100%25,941

Schema mapping

How source columns from the acquired Williams 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 — Williams County, Ohio (39171) 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 stateparcelid localparcelid stateluc landarea mailaddressall mailcity mailstate mailzip situsaddressall county camadatasite geom 8 cols ⇢ parcelid parcelid2 usedesc taxacres owneraddr ownercity ownerstate ownerzip parceladdr township sourceurl 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 98.6% elevmin 98.6% elevmax 98.6% elevavg supplemented · derived / other pipelines 100% numbldgs 99.3% ownertype 99.3% ownername 61.8% parcelcity 100% parcelstate 100% parcelzip lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname usedesc numbldgs taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip township elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras lrversion publish.parcel_layer columns not fed by these sources (54) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxyear, taxdistrict, usecode, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft, bedrooms halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, legaldesc, section, qtrsection, range, plssdesc, book, page block, lot, parceltype, accesstype, iucnclass, placename, placetype, firmid, firmdate, fldzone, zonesubty, staticbfe, fireplaces, heating heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit PARCEL 12 mapped · 8 kept in extras · 42 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL stateparcelid localparcelid stateluc landarea mailaddressall mailcity mailstate mailzip situsaddressall county camadatasite geom parcelid parcelid2 usedesc taxacres owneraddr ownercity ownerstate ownerzip parceladdr township sourceurl geom extras · 8 source columns preserved as json mailnumber, mailstreetprefix, mailstreetname mailstreetsuffix, mailunitnumber, landarea_py, currentto globalid extras not present in source — filled with NULL (42) taxacctnum, taxyear, usecode, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, ownername, parcelcity, parcelstate, parcelzip, legaldesc, section, qtrsection range, plssdesc, book, page, block, lot, updated, taxdistrict, parentid, fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Williams County:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated