Median estimated market value for properties in this county.
AssessorSearch county dataWashington County, IL
Washington County, IL assessor property search and records
Use this county guide to find official assessor property search resources, recorder and deed links, tax records, GIS parcel maps, permits, and property data insights for Washington County, Illinois. Search an address or APN, then jump to official county sources or property tax and value data.
Search a Washington County address or APN
Official sources
Washington County assessor, recorder, tax, and parcel map sources
Use this table to find the official county source for assessor property search, recorded documents, property tax, GIS parcel maps, permits, and zoning records.
| Record type | Official source | Notes |
|---|---|---|
| Assessed values | Washington County Property Tax Inquiry (DevNet)washingtonil.devnetwedge.com |
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| Deeds and recorded documents | Washington County Clerk & Recorder Land Recordstapestry.fidlar.com/Tapestry2/Default.aspx |
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| Property taxes | Washington County Treasurer Property Tax Portalwashingtonil.devnetwedge.com |
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| GIS and parcel maps | Washington County GIS Parcel Mapdevnetinc.maps.arcgis.com/apps/webappviewer/index.html |
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| Permits and building records | Washington County Zoning & Building Permitswashingtonco.illinois.gov/zoning/ |
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| Zoning and land use | Washington County Zoning Departmentwashingtonco.illinois.gov/zoning/ |
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County data
Washington County tax rates and property values
County and city-level rollups from AssessorSearch indexed property data. Use these values as directional context, then verify parcel-specific details with the official county sources above.
Median assessed value from county assessment records when available.
AssessorSearch county dataMedian annual property tax amount from indexed tax records when available.
AssessorSearch county dataMedian effective property tax rate calculated from annual tax and value fields.
AssessorSearch county dataCity property data
Top city rollups for estimated value, assessed value, property tax rate, and tax amount.
| City | Median estimated value | Median assessed value | Median effective property tax rate | Median tax amount |
|---|---|---|---|---|
| Nashville | $199,568 | $41,488 | 1.60% | $2,723 |
| Okawville | $185,622 | $42,257 | 1.35% | $2,195 |
| Ashley | $140,311 | $25,500 | 1.27% | $1,324 |
| Addieville | $193,388 | $40,496 | 1.23% | $2,081 |
| Hoyleton | $177,995 | $35,595 | 1.41% | $2,018 |
| Oakdale | $198,138 | $40,451 | 1.28% | $2,320 |
| Du Bois | $127,680 | $27,935 | 1.65% | $1,582 |
| Irvington | $144,590 | $26,506 | 1.19% | $1,505 |
| Richview | $169,270 | $29,180 | 1.36% | $1,698 |
| Centralia | $141,155 | $30,973 | 1.47% | $1,973 |
FAQ
Washington County property records FAQ
Common questions about assessor, deed, tax, GIS, and permit records.
Where can I search Washington County property records by address?
Use the official Washington County Property Tax Inquiry (DevNet) to search Washington County property records by address or parcel number. Use AssessorSearch property search as a free, easy-to-use option to search Washington County by address or APN.
How do I find the owners of Washington County properties?
Use the official Washington County Property Tax Inquiry (DevNet) for county ownership and parcel records when owner names are available online. Use AssessorSearch property search as a free, easy-to-use option to look up Washington County properties by address or APN.
Where can I verify assessed value in Washington County?
Use the official Washington County Property Tax Inquiry (DevNet) for assessed values, parcel details, exemptions, and property characteristics when those records are available online.
Where can I look up Washington County property tax bills or payments?
Use the official Washington County Treasurer Property Tax Portal for property tax bills, payment history, due dates, or tax collector records.
Where can I find deeds or recorded documents in Washington County?
Use the official Washington County Clerk & Recorder Land Records for deeds, mortgages, liens, plats, and other recorded documents. These records are usually separate from assessor property-value records.
Where can I view parcel maps or GIS data in Washington County?
Use the official Washington County GIS Parcel Map for parcel maps, map layers, boundaries, and GIS context. GIS maps should be treated as reference tools, not legal surveys.
Where can I search permits or zoning in Washington County?
Use Washington County Zoning & Building Permits for permits and Washington County Zoning Department for zoning or land-use records. City properties may require city-specific permit or planning portals.
Can I build a list of Washington County property owners?
Use Affix by AssessorSearch for county property owner lists, filters, exports, skip tracing, and outreach workflows.
Related counties
More Illinois property records
Use related county pages when researching nearby property records or comparing official source patterns.