Median estimated market value for properties in this county.
AssessorSearch county dataBoone County, IL
Boone 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 Boone County, Illinois. Search an address or APN, then jump to official county sources or property tax and value data.
Search a Boone County address or APN
Official sources
Boone 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 | Boone County Property Tax Inquiry (DevNet)booneil.devnetwedge.com |
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| Deeds and recorded documents | Boone County Clerk & Recorder Document Searchilboone.fidlar.com/ILBoone/DirectSearch/ |
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| Property taxes | Boone County Treasurer Property Taxboonecountytreasurer.us |
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| GIS and parcel maps | Boone County GIS Portalboone-gis.maps.arcgis.com |
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| Permits and building records | Boone County Building & Zoningwww.boonecountyil.gov/government/departments/building___zoning/index.php |
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| Zoning and land use | Boone County Zoning Overview Mapboone-gis.maps.arcgis.com |
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County data
Boone 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 |
|---|---|---|---|---|
| Belvidere | $240,299 | $74,601 | 2.21% | $5,109 |
| Poplar Grove | $264,795 | $76,051 | 1.96% | $4,905 |
| Capron | $248,233 | $72,082 | 2.04% | $4,882 |
| Caledonia | $392,004 | $119,281 | 2.04% | $7,613 |
| Loves Park | $393,433 | $124,873 | 2.16% | $8,578 |
| Garden Prairie | $303,749 | $82,385 | 1.79% | $5,473 |
| Rockford | $429,182 | $138,278 | 2.29% | $9,734 |
| Cherry Valley | $335,937 | $110,490 | 2.30% | $7,626 |
| South Beloit | $300,781 | $83,513 | 1.86% | $5,303 |
| Roscoe | $374,255 | $115,968 | 1.95% | $7,496 |
FAQ
Boone County property records FAQ
Common questions about assessor, deed, tax, GIS, and permit records.
Where can I search Boone County property records by address?
Use the official Boone County Property Tax Inquiry (DevNet) to search Boone County property records by address or parcel number. Use AssessorSearch property search as a free, easy-to-use option to search Boone County by address or APN.
How do I find the owners of Boone County properties?
Use the official Boone 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 Boone County properties by address or APN.
Where can I verify assessed value in Boone County?
Use the official Boone 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 Boone County property tax bills or payments?
Use the official Boone County Treasurer Property Tax for property tax bills, payment history, due dates, or tax collector records.
Where can I find deeds or recorded documents in Boone County?
Use the official Boone County Clerk & Recorder Document Search 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 Boone County?
Use the official Boone County GIS Portal 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 Boone County?
Use Boone County Building & Zoning for permits and Boone County Zoning Overview Map for zoning or land-use records. City properties may require city-specific permit or planning portals.
Can I build a list of Boone 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.