Cook County Government Bid Tabulations and Procurement Records

Cook County, Illinois publishes preliminary bid tabulations for procurements estimated at $25,000 or more. The dataset includes details on bids, RFPs, RFQs, and RFIs, with columns for company names, bid amounts, project names, and contract numbers. This information is provided to improve transparency but is subject to change pending official review.

Use Cases

• Tracking bid competition for projects using Project Name, Company Name, and No Responses
• Analyzing vendor activity and contract awards using Company Name, Contract Number, and Bid Amount
• Monitoring procurement timelines and department spending using Bid Opening Date, Department Name, and Bid Amount
• Mapping vendor locations for geographic analysis using Location 1 (address), Location 1 (city), and Location 1 (state)

Strengths

• Provides transparency for a defined procurement threshold (bids estimated at $25,000 or more)
• Contains specific columns for key procurement entities (Company Name, Department Name, Contract Number)
• Available on multiple platforms (Socrata, Data.gov), indicating maintained public access

Limitations

• Data is explicitly labeled as preliminary and subject to change, limiting reliability for final decisions
• Key metadata (row count, license, author) is missing or 'unknown' across all provided sources
• A historical dataset for records before June 2016 is hosted separately, creating a potential data discontinuity

Provenance

Source

datacatalog.cookcountyil.gov

Collection Method

Likely collected from official county procurement processes and bid openings.

Time Range

Records from at least June 2016 onward, with earlier data in a separate archive.

Freshness

Last updated dates range from 2026-03-29 to 2026-04 05 across platforms.

Geography

Cook County, Illinois, United States.