Cook County Election Precinct Boundaries For 2016 Elections

2015 precinct data was used for the 2016 primary and general elections. It describes and locates election precincts in Cook County, Illinois, created for public use and the operational needs of the Cook County Election Department, Clerk's Office, and Illinois Board of Elections. The dataset includes geospatial geometry and precinct identifiers.

Use Cases

• Mapping precinct boundaries using the `the_geom` column for spatial visualization.
• Joining voter registration data using precinct identifiers like `Idpct` or `Idpct_txt`.
• Analyzing precinct naming conventions and administrative hierarchies via the `NAME` and `TownNo` columns.
• Tracking metadata changes through audit columns `created_da`, `created_us`, `last_edi_1`, and `last_edite`.

Strengths

• Contains geospatial vector data (`the_geom`) for mapping and analysis.
• Includes administrative metadata fields for tracking data provenance.

Limitations

• Data is specific to the 2016 election cycle and may not reflect current precinct boundaries.
• Sample data and row counts are unavailable, preventing assessment of dataset completeness.

Provenance

Source

datacatalog.cookcountyil.gov

Time Range

2015 (for 2016 elections)

Freshness

Last updated on 2026-01-27, but the underlying data represents 2015 precincts.

Geography

Cook County, Illinois, USA