Cook County Property Parcels with Spatial Feature Proximity Data

Cook County 10-digit parcels have attached distances to various spatial features. Centroids are based on Cook County parcel shapefiles, and the dataset is updated annually as new shapefiles become available. Data is for the current tax year and may not be final until certified by the Cook County Board of Review.

Use Cases

• Model property valuation based on proximity to spatial features like parks or transit.
• Analyze urban development patterns using parcel centroid locations.
• Identify parcels missing geospatial data, which may indicate older properties.

Strengths

• Data is updated annually with new parcel shapefiles.
• Parcel Index Numbers (PINs) are standardized to 10 digits with zero-padding guidance.
• Proximity calculations are based on authoritative Cook County parcel shapefiles.

Limitations

• Older properties may be missing coordinates and attached spatial data.
• Attached spatial data is primarily available for years after 2012, not all historical years.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Cook County Assessor's Office, Cook County of Illinois.

Collection Method

Distances calculated from parcel centroids based on Cook County parcel shapefiles.

Time Range

Primarily after 2012, with data for the current tax year.

Freshness

Last updated 2026-03-08 02:01:34.023288; updated annually.

Geography

Cook County, Illinois, USA.