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Williams County, OH Parcels & GIS Data

Williams County, OH parcel data: 25,990 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Williams County, Ohio parcel data covering 25,990 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 25,990 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%25,990
parcelid100%25,983
parcelid299.4%25,822
ogparcelid100%25,990
ogparcelid2100%25,990
parentid<0.1%0
stackid<0.1%0
geoid100%25,990
statefp100%25,990
countyfp100%25,990
countyname100%25,990
cousubfp100%25,990
cousubname100%25,990
tractce100%25,990
tractname100%25,990
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%25,990
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%25,813
calcarea100%25,990
saleamt<0.1%0
saledate<0.1%0
ownertype99.3%25,806
ownername99.3%25,806
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr91.0%23,640
parcelcity89.8%23,335
parcelstate100%25,990
parcelzip100%25,990
legaldesc<0.1%0
township99.9%25,977
section99.9%25,977
qtrsection99.9%25,977
range99.9%25,977
plssdesc99.9%25,977
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%1,206
placetype4.6%1,183
firmid0.2%50
firmdate0.2%50
fldzone0.2%50
zonesubty0.2%46
staticbfe<0.1%0
elevmin98.6%25,622
elevmax98.6%25,622
elevavg98.6%25,622
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%5,845
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%25,990
centroidx100%25,990
centroidy100%25,990
surfpointx100%25,990
surfpointy100%25,990
geom100%25,990
extras100%25,990
ownerlist97.7%25,386
placefp54.5%14,177
zoningurl<0.1%0

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 2026-08-30 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 geom · derived from geometry geom dem.us_1m · USGS 1m DEM 98.6% elevmin 98.6% elevmax 98.6% elevavg s_fld_haz_ar · FEMA NFHL 0.2% fldzone 0.2% zonesubty 0.2% firmdate 0.2% firmid supplemented · derived / other pipelines 100% numbldgs 99.3% ownertype 99.3% ownername 89.8% parcelcity 100% parcelstate 100% parcelzip 100% section 100% qtrsection 100% range 100% plssdesc 97.7% ownerlist 54.5% placefp 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 section qtrsection range plssdesc firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp publish.parcel_layer columns not fed by these sources (47) — 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, book, page, block, lot, parceltype, accesstype iucnclass, placename, placetype, staticbfe, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid dfrurl, caapermit, cwapermit, rcrapermit, zoningurl 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:

Frequently asked questions

Where can I find Williams County, OH parcel and GIS data?

Land Records publishes a Williams County, OH 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 Williams County, OH dataset as a GeoPackage or CSV.

How many parcels are in Williams County, OH?

The current dataset contains 25,990 parcel records for Williams County, OH, each with its boundary geometry and assessor attributes.

What is the FIPS code for Williams County, OH?

The FIPS code for Williams County, OH is 39171.

What information does each Williams County, OH parcel record include?

Each Williams County, OH 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 Williams County, OH parcel data free?

You can preview Williams County, OH 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 Williams County, OH have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated