This page helps users complete a property search in Sangamon County, Illinois, using official parcel, assessment, and map resources.

Start with the Sangamon County property tax parcel search when you need a record by parcel number, owner name, or property address. Use the Sangamon County IL - Parcel Viewer when you need map-based parcel details.

The main online starting point is the county property tax parcel search. Most property tax functions, including current tax payment and assessment complaint options, begin by finding the parcel first.

  • Parcel number
  • Owner name
  • House number
  • Street direction and street name
  • City

A complete parcel number or owner name can be enough by itself. If you do not enter one of those, use at least 5 digits of a parcel number, a house number, or a street name.

  • Go to the Sangamon County parcel search.
  • Enter the parcel number, owner name, or address details.
  • Open the matching parcel result.
  • Use the “Action” drop-down on the results screen for available parcel tasks.

Search tip: Parcel numbers are generally 11 digits, and the 5th digit is usually zero. Spaces and dashes are not required.

Parcel Viewer maps

The Sangamon County IL - Parcel Viewer supports map-based property research. It includes parcel, property, neighborhood, broadband, measurement, and parcel link tools.

You can search the Parcel Viewer by parcel number, parcel address, parcel owner, subdivision, or by clicking on the map. The viewer also includes aerial layers, topography, flood zone, soils, sales, map printing, latitude and longitude zoom, and report or map download options.

Sales and assessment searches

For sale-related property research, the county offers a parcel sales search. It can be used with a parcel number, township, class, sale year, sale date range, or acreage range.

The sales search requires either a complete parcel number, the first 5 digits of a parcel number, or selected criteria such as township, class, and a sale year or sale date range. Sale date ranges cannot be more than one year.

Use Sangamon County sales data search when sale details are the main reason for the property search.

Supervisor of Assessments records

The Sangamon County Supervisor of Assessments maintains records for ownership, tax bill mailing address, property address, legal description, sales data, and assessment values reported by township assessors.

The office also maintains digital parcel line records for the county. Public use computer terminals are available in the office for Property Tax System and GIS inquiry access, and printed or digital parcel map copies may be available.

Recorded deeds are transmitted electronically to the Supervisor of Assessments. The average time between deed recording and an ownership record change is 4 to 6 weeks.

Assessment complaints and address changes

Assessment complaint forms are reached through the property tax website after locating the parcel. After finding the correct parcel, choose “Go” under the Action item, then choose Reports/Forms: For Tax Payers and select Assessment Complaint.

Mailing address changes follow a similar parcel-based process. Locate the parcel by parcel number, address, or owner name, then choose Reports/Forms: For Tax Payers: Address Change Notice.

Telephone requests for mailing address changes are not accepted. Requests must be made in writing, by fax, or in person by the property owner or an authorized agent with required legal authorization.

Exemptions and township multipliers

The Supervisor of Assessments handles property tax exemption application forms for several exemption types, including owner occupied homestead exemptions, senior homestead exemptions, senior assessment freeze, disabled persons, and certain veterans exemptions.

The township multiplier page explains how Illinois equalization factors may affect assessed value. Sangamon County property owners may compare fair market value, comparable sales, and comparable assessments when deciding whether to challenge an assessment or multiplier issue.

Property search limits

Search results may need to be narrowed if a query returns more than 300 results. Use a more specific parcel number, owner name, address, township, class, sale year, or sale date range when the system asks for refined criteria.

For single digit numbered streets, the parcel search notes that you may need to add a leading zero.

Property search contact

Contact the Supervisor of Assessments for questions about assessment records, ownership records, parcel line records, exemptions, assessment complaint documents, and related property search issues.

Common questions

Start with the official parcel search if you have a parcel number, owner name, or property address.

Can I search Sangamon County parcels on a map?

Yes. The Parcel Viewer supports searches by parcel number, address, owner, subdivision, or map click.

What should I do if my parcel search returns too many results?

Refine the search. The parcel and sales search tools may ask for narrower criteria when results exceed 300 matches.

Who maintains Sangamon County assessment and ownership records?

The Sangamon County Supervisor of Assessments maintains ownership, mailing address, site address, legal description, sales data, and assessment value records for county parcels.

How long can an ownership change take after a deed is recorded?

The average time between deed recording and the ownership record change in the Supervisor of Assessments office is 4 to 6 weeks.

Can I change a tax bill mailing address by phone?

No. Mailing address change requests must be written, faxed, or made in person by the property owner or an authorized agent.