Illinois state and local purchase lines BidSparq indexes
BidSparq indexes 1.3M+ priced purchase-order lines from 4 public registers in Illinois, covering 14 named buyers. Each line records what a Illinois government body bought, from which vendor, at what unit price, and when: the layer under the RFP that shows who really supplies a buyer and what the buyer really pays.
1.3M+
Priced purchase lines
14
Named buyers covered
Oct 15, 2026
Latest dated line
Source: the publishing jurisdictions' own open checkbooks, payment registers, transparency portals, K-12 check registers and board packets.
Counts: BidSparq's own tracked line counts from the nightly per-buyer roll-up. They measure what BidSparq holds, not total Illinois spending.
License: free to cite with attribution to BidSparq
The registers behind Illinois's lines
| Register | Purchase lines | Buyers | Latest line |
|---|---|---|---|
| Cook County checks | 729K | 3 | Aug 27, 2026 |
| Chicago vendor payments | 446K | 1 | Oct 9, 2026 |
| Urbana IL expenditures | 110K | 1 | Dec 12, 2025 |
| board packet check registers | 28K | 9 | Oct 15, 2026 |
Illinois buyers with the most purchase lines
The 12 buyers with the most lines on file. Each linked buyer has a public page with its open bids, buying signals and purchase totals by year.
| Buyer | Type | Lines | Total | Latest line |
|---|---|---|---|---|
| Cook County, IL | City or county | 729K | $14.2B | Aug 27, 2026 |
| City of Chicago | City or county | 446K | $80.0B | Oct 9, 2026 |
| City of Urbana | City or county | 110K | $395.3M | Dec 12, 2025 |
| Champaign Unit 4 Schools | K-12 district | 9,737 | $23.8M | Aug 25, 2026 |
| City of Carbondale | City or county | 6,675 | $22.5M | Oct 22, 2025 |
| Township High School District No. 214 | K-12 district | 5,694 | $37.4M | Oct 15, 2026 |
| Community Consolidated School District No. 93 | K-12 district | 3,897 | $15.3M | Sep 30, 2026 |
| Pana Community Unit School District No. 8 | K-12 district | 868 | $1.8M | Sep 15, 2026 |
| Dixon Unified School District No. 170 | K-12 district | 466 | $1.7M | Sep 29, 2026 |
| Rantoul | 361 | $485K | Sep 17, 2026 | |
| Bourbonnais Elementary School District No. 53 | K-12 district | 276 | $3.1M | Sep 23, 2026 |
| Lyons School District No. 103 | K-12 district | 118 | $3.0M | Jun 24, 2025 |
Questions people ask about Illinois purchase data
Which Illinois governments publish their purchase lines?
4 public registers in Illinois publish line-level purchase or payment records that BidSparq can load: Cook County checks, Chicago vendor payments, Urbana IL expenditures, board packet check registers. Cook County checks is the largest, with 729K lines across 3 buyers. Jurisdictions that publish only summaries, or no register at all, are not on this page.
How current is the Illinois purchase data?
Each register publishes on its own cadence, from daily payments to a fiscal year at a time. The latest dated line BidSparq holds for Illinois is Oct 15, 2026; the table above shows the latest line per register. A June 30 date usually means a state that publishes complete fiscal years after close.
How do I see what Illinois buyers paid for my product?
Signed in, look up any company, brand or product on the Market Intelligence pages to see which Illinois buyers bought it, from which vendor and at what unit price, or ask the AI chat in plain English. Every buyer listed here has a public page with its open bids, buying signals and purchase totals; vendors, line items and contacts are shown to signed-in accounts.
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