Delinquent tax lists · Illinois
Cook County delinquent tax list
Short answer: Cook County has two delinquent tax lists. The official one is published by the County Treasurer before each scheduled sale, free to download, and it lists parcel numbers and amounts owed with no owner contact. The year-round one is the delinquency record underneath it, where 338 (estimated) owners near Chicago currently carry a distress signal. Illinois is a lien state, so a winning bid at the sale takes a certificate rather than the house.
Distressed owners near Chicago
338
Within 25 miles of the county seat, refreshed daily. Cook County is one of the largest counties in the country.
Top-deal discount target
~41% under market
Average start bid across the 20 strongest Cook leads right now.
Avg. spread per top deal
$211,000
On a typical $518,000 estimated value.
Coverage centers on Chicago, the Cook County seat, and reaches 25 miles out, widening to 50 when the market runs thin.
Cook County tax sale rules at a glance
The mechanics that decide what you are actually buying, and how long the owner keeps a way out. The full Illinois rules, timelines and deficiency detail sit on the state page, since they apply to every county here.
| County | Cook County, Illinois. County seat: Chicago. |
|---|---|
| Who publishes the list | The County Treasurer for Cook County. |
| What the sale transfers | Illinois is a lien state. A winning bidder gets a tax lien certificate, which pays interest if the owner redeems and can be foreclosed into ownership if they do not. |
| Rate and cadence | Annual tax sales use penalty-rate bidding with a 2 to 3 year owner redemption before a tax deed. |
| Owner redemption | Yes, but BEFORE the sale: generally 7 months from service for homeowners. |
The Illinois delinquency clock
Where a Cook owner sits on this line is what decides whether they will take a low cash offer today.
The Cook list, ranked hardest-first
Representative profiles from our ranking model for the Chicago area. The live list, with exact locations, photos and owner details, is one free scan away.
| Rank | Why they would sell | Est. value | Start bid | Under market |
|---|---|---|---|---|
| #1 | Tax delinquent 4 yrVacant 18 mo65% equity | $636,000 | $280,000 | ~44% |
| #2 | Notice of defaultTax delinquent 3 yr50% equity | $564,000 | $293,000 | ~45% |
| #3 | Notice of defaultTax delinquent 4 yr74% equity | $515,000 | $221,000 | ~45% |
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What the Cook list is made of
Most distressed owners carry more than one signal, so these bands overlap. Stacked signals rank highest.
How Cook compares across Illinois
Cook County is the largest county we cover in Illinois, and it runs lighter in distressed owners than the Illinois average, at 0.7 flagged properties per 10,000 residents against a state figure of 4.8. It accounts for about 7.5% of every flagged property across the Illinois counties on this site.
| County | Seat | Flagged owners | Per 10k residents |
|---|---|---|---|
| Sangamon County | Springfield | 747 | 38.1 |
| Madison County | Edwardsville | 683 | 25.8 |
| St. Clair County | Belleville | 566 | 22.2 |
| Peoria County | Peoria | 560 | 31.1 |
| McHenry County | Woodstock | 449 | 14.4 |
| DuPage County | Wheaton | 378 | 4.1 |
Density matters more than the raw count when you are choosing where to work. A smaller county with a high per-capita figure often has less competition per lead than the metro next door.
How far under market these close
The official Cook list vs. this one
Both are worth having. They answer different questions.
| Cook official sale list | The LowBaller list | |
|---|---|---|
| Who publishes it | The County Treasurer | LowBaller, from county and public records |
| When it exists | Only in the run-up to each scheduled sale | Year round, refreshed daily |
| Format | A PDF or spreadsheet of parcel numbers and amounts owed | A ranked table with a map pin, photo and estimated value on every row |
| Owner contact | Not included | Phone and email on unlock, and no credit is spent when nothing verifies |
| Ranking | Alphabetical or by parcel number | Hardest situation first, by foreclosure stage, years behind and equity |
| Timing advantage | Everyone bidding sees the same list on the same day | Owners appear months before any auction, while a private sale still solves their problem |
Working the Cook list
What actually matters in a county this size, at this level of distress, under Illinois timelines.
The busiest list in Illinois
Cook County is the largest of the 11 Illinois counties covered here and carries about 7.5% of every flagged property in the state. That is the deepest pipeline available, and also the one every other buyer in Illinois already knows about.
A thin list, so filter hard
At 0.7 flagged properties per 10,000 residents, Cook sits in the bottom quarter of Illinois counties, against a state figure of 4.8. Do not try to work every row. Sort on equity and go deep on a handful.
Chicago sets the price
Cook is anchored on Chicago, so comps move with the metro and buyer competition tracks the city rather than the county line. Values swing hard between ZIPs here, which makes the estimated value on each row worth more than the discount percentage.
The Illinois clock
Foreclosure here typically runs 9 to 15 months from filing to sale. The tax clock and the mortgage clock run independently, so check both before you decide how hard a deadline an owner is actually facing.
Why Cook investors work it before auction day
No bidding war
At the sale you are one of a room full of bidders on the same parcel. Months earlier you are the only person who called.
You can see the house
A private sale means an inspection and a clean title search. Lien auctions in Illinois rarely give you either.
The owner keeps something
An owner with equity who sells early clears the tax debt and walks away with money. At the sale, they usually walk away with nothing.
Cook County delinquent tax list FAQ
How do I get the Cook County delinquent tax list?
Two lists exist and they are not the same. The official one comes from the County Treasurer, is published as a PDF or spreadsheet before each scheduled sale, and disappears between sales. The year-round one is the delinquency record itself, which is what LowBaller compiles: roughly 338 properties around Chicago currently carry at least one distress signal, ranked by how much pressure the owner is under.
Is there a free Cook delinquent property tax list PDF?
Yes. The County Treasurer publishes the pre-sale list free of charge, usually as a PDF or a downloadable spreadsheet tied to a specific sale date. It gives you parcel numbers and amounts owed. It does not give you owner contact details, an estimated value, or any indication of which owners would actually take a low cash offer.
When is the Cook County tax sale?
Cook County publishes its own schedule, and it moves. The Illinois pattern is the thing that holds steady: Annual tax sales use penalty-rate bidding with a 2 to 3 year owner redemption before a tax deed. Check the county's pre-sale notice close to the date, because the list shrinks daily as owners redeem.
Can I buy Cook tax-delinquent property before the auction?
Yes, and it is usually the better trade. There is no bidding war, the owner clears the debt with a clean sale instead of a forced one, and you are not buying blind. The window is the months between the delinquency appearing in the record and the sale being scheduled, which is exactly the period this list covers.
What does a winning bid actually get you in Illinois?
Illinois is a lien state, so a winning bidder takes a tax lien certificate, which pays interest if the owner redeems and can be foreclosed into ownership if they do not. Yes, but BEFORE the sale: generally 7 months from service for homeowners. That difference matters more than the discount: in a lien state you are buying a debt with a yield, and in a deed state you are buying a house.
How far below market do Cook deals close?
The strongest current leads near Chicago support start bids around 41% under estimated value. Across the whole list, hard distress such as a scheduled auction or a stacked tax lien closes 20 to 40% under market, while softer signals like long-distance ownership land closer to 15 to 30% under. Cook runs lighter in distress than the Illinois average, so the deepest discounts are rarer here and equity screening matters more than volume. Equity sets the ceiling, because an offer cannot go below what clears the owner's mortgage.
How many tax-delinquent properties are there in Cook?
About 338 properties within 25 miles of Chicago currently show at least one motivation signal in public records, and tax delinquency is among the most common. That works out to 0.7 flagged properties per 10,000 residents, against 4.8 across Illinois as a whole, and makes Cook the largest of the 11 Illinois counties covered here by population. That figure moves daily as owners pay, redeem or fall further behind.
Do I need a Cook address to search, or can I search the whole county?
Either. Run the scan on any Cook ZIP and you get the full ranked list for the surrounding area, or check one specific address to see whether that owner carries a distress signal. Browsing is free and unlimited, and credits are only spent when an owner's verified phone or email comes back.
More for the Chicago area
Delinquent tax lists nearby
Keep going
The Cook owners who will sell cheap are on this list today.
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Informational summary, not legal or investment advice. Rates, redemption periods and sale formats are summarized at the Illinois state level and can be changed by statute or applied differently by Cook County. The County Treasurer and the county's own pre-sale notices control every schedule, deposit and bidding rule. Verify before you bid.