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Assessor [Archived 05-11-2022] - Residential Neighborhood Boundaries

Published by datacatalog.cookcountyil.gov | Cook County of Illinois | Catalog Last Checked: August 01, 2026 at 06:16 AM | Dataset Last Updated: January 27, 2026
Neighborhoods play an important role in residential property assessment. Single-family and residential multi-family property assessments are sensitive to neighborhood boundaries. Neighborhoods are nearly always used in statistical regression models to produce initial assessed values, and comparable properties are nearly always selected from within neighborhoods for the purposes of appeal. See data notes for additional information.

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