Chicago Ward and Precinct Boundaries for 2023-2024 Elections

Ward precincts for Chicago, which function as local election districts to determine voter polling places based on addresses. The dataset contains 1291 precincts, reflecting a single change from the previous set of 1290 precincts, and was approved for use from the February 28, 2023 Municipal General election through the November 5, 2024 General election. The data is provided by data.cityofchicago.org.

Use Cases

• Map precinct boundaries and calculate areas using the_geom and Shape_Area columns.
• Analyze ward-level election district composition using Ward and Precinct columns.
• Join voter or demographic data using the composite Ward_Precinct identifier.
• Calculate perimeter lengths for spatial analysis using the Shape_Leng column.

Strengths

• Precise change documentation: only one precinct split increased the count from 1290 to 1291.
• Clear temporal applicability for elections from February 2023 to November 2024.
• Includes spatial geometry (the_geom) enabling direct mapping and geospatial analysis.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

data.cityofchicago.org

Collection Method

Approved by the Chicago Board of Election Commissioners, based on U.S. Census Bureau blocks.

Time Range

Applicable for elections from February 28, 2023 to November 5, 2024.

Freshness

Last updated 2026-03 25 19:30:21; freshness should be verified.

Geography

City of Chicago, Illinois, USA.