The Illinois Gaming Board’s September tally is out, and the headline is a clean one: Illinois casino revenue came in at $178.2 million, up 12.7% year over year. That is the number that will get quoted. It is also the least interesting part of the report.
A monthly gaming report is a stack of property-level lines, and the headline percentage is just their weighted average. If you want to know whether a market is actually growing, or whether one property moved into a new building and dragged the average up with it, you have to work through the numbers in order. Here is how to do that with the September figures.
Step 1: convert the percentage into dollars
Percentages flatter small bases and hide big ones. Start by backing out the prior-year figure.
At $178.2 million and +12.7%, September 2024 would have been roughly $158.1 million. So the market added about $20 million in a single month. That is the real quantity to explain, and it is the number you divide up among properties later. Everything else in the report is an attempt to account for those $20 million.
Step 2: split slots from table games
The two halves of a casino floor behave differently, so always separate them before drawing conclusions.
| Segment | September revenue | Year-over-year change | Share of total |
|---|---|---|---|
| Slots | $134.6 million | +12.4% | ~75.5% |
| Table games | $43.6 million | +13.8% | ~24.5% |
| Total | $178.2 million | +12.7% | 100% |
Two things stand out. First, the growth is broad rather than lopsided: slots and tables moved up at almost the same rate, which usually points to more people walking through the doors rather than a single segment getting lucky. Second, slots carry three quarters of the revenue, so slot performance is effectively the market’s pulse. If slots had been flat, the 13.8% table games gain would barely have registered in the headline.
Worth remembering: table games revenue is noisier month to month than slots. Slot results grind toward their mathematical expectation because of enormous volume and a fixed house edge per machine. Table games depend on how a comparatively small number of large wagers actually landed, so one strong month at baccarat or craps can move a property’s line more than any change in footfall. A single 13.8% table move is a data point, not a trend.
Step 3: count the winners and the losers
Breadth tells you whether growth is structural or isolated. Of the state’s 17 casinos, 14 posted year-over-year revenue increases and only three declined. That ratio matters: a 12.7% gain carried by 14 properties is a different story from a 12.7% gain carried by one.
The declines were small in both percentage and dollar terms:
- DraftKings at Casino Queen: down 8% to $6 million
- Harrah’s Metropolis: down 3.5% to $4.2 million
- Walkers Bluff: down 2.5% to $2.7 million
Together those three shed well under a million dollars against a market that added around $20 million. They are rounding errors in the state total, though not in their own budgets.
Step 4: find the structural changes before you call it organic growth
This is the step most summaries skip, and it is where September gets genuinely interesting.
Hollywood Casino Aurora reported $14.3 million, up 81.1% year over year, the largest increase in the state. That property moved into a new land-based facility in June. An 81% jump three months later is not a sign that Aurora’s market suddenly discovered gambling; it is what happens when a riverboat-era footprint is replaced by a modern building with more floor space and easier access.
Run the arithmetic. At $14.3 million and +81.1%, Aurora’s prior-year September was around $7.9 million, meaning the property added roughly $6.4 million on its own. Against a market-wide gain of about $20 million, one relocation accounts for close to a third of the entire increase.
Wind Creek is the second big mover: $19.9 million, up 24.9%, which works out to roughly $4 million added. Rivers Casino, the largest property in the state at $44.1 million, grew a more modest 7.6% but off a much bigger base, contributing something like $3.1 million.
Three properties, therefore, explain roughly two thirds of the state’s September gain. The remaining eleven growers split what is left. That reframes the headline: Illinois casino revenue is up, and the underlying market is healthy, but a large slice of the climb is capacity and facility change rather than a 12.7% surge in customer demand.
Step 5: read the property table top to bottom
The reported leaders for September:
| Casino | September revenue | Year-over-year change |
|---|---|---|
| Rivers Casino | $44.1 million | +7.6% |
| Wind Creek | $19.9 million | +24.9% |
| Hollywood Casino Aurora | $14.3 million | +81.1% |
| Hard Rock Casino Rockford | $12.4 million | — |
| Grand Victoria | $12.4 million | +13.2% |
| Hollywood Casino Joliet | $11.7 million | — |
| Bally’s Chicago | $11.3 million | — |
| Full House Resorts | $10.8 million | +14.1% |
Other notable percentage gains came from Fairmount Park (+61%), Golden Nugget Danville (+31.2%), Par-A-Dice Hotel Casino (+12.2%) and Harrah’s Joliet (+11.1%). Treat the eye-catching percentages with care: Fairmount Park’s 61% and Danville’s 31.2% come off small revenue bases, so the dollar amounts behind them are far smaller than Aurora’s or Wind Creek’s. A property doing $3 million can post a bigger percentage swing than Rivers ever will, without mattering much to the state total.
Rivers is the line to watch for market health. It is large enough that its result is mostly demand rather than noise, and 7.6% growth from the state’s biggest property is a solid, unspectacular signal.
Step 6: know what the report does not tell you
Monthly regulator releases are revenue reports, not profit statements or behaviour studies. Before you extrapolate:
- Revenue is not profit. A new land-based facility brings construction costs, debt service and higher operating expenses. Aurora’s 81% revenue jump says nothing about its margin.
- Revenue is not visitor count. Admissions and spend per visit move independently. Without them you cannot tell whether more people came or the same people lost more.
- Casino figures are a slice of the state’s gambling market. Illinois also has a large video gaming terminal network outside casinos, reported separately, plus separately reported sports wagering. A casino-only total does not describe statewide gambling activity.
- Revenue is what players lost. Casino “revenue” is the amount wagered minus the amount paid back. Every dollar in that $178.2 million came out of a player’s pocket, which is the house edge doing exactly what it is designed to do over millions of outcomes.
What to watch in the next few reports
The useful test arrives once the comparables normalise. Hollywood Casino Aurora will keep posting outsized year-over-year gains until June of next year, when it starts lapping its own land-based results; at that point you will see what the new building is really worth on a like-for-like basis. The same applies to any Illinois property whose current comparison period predates its present format.
Two questions would sharpen the picture considerably. Does Rivers hold its mid-single-digit growth, or was September seasonal? And do the three decliners stabilise, or is revenue migrating from smaller southern Illinois properties toward the newer, larger venues in and around Chicago? Cannibalisation inside a maturing market looks a lot like growth in the aggregate and a lot like decline at individual properties.
For now the fair reading is this: a genuinely healthy month, broad participation across 14 of 17 casinos, slots and tables rising in step, and roughly a third of the headline gain attributable to one property changing buildings. A 12.7% rise is real. A 12.7% rise in underlying demand is not what this report shows.
One last note for readers who play rather than analyse: these totals are a reminder that casino games are priced to return less than they take in over time. Set a budget you are comfortable losing, treat any session as entertainment spend, and use the deposit and session limits operators are required to offer if you want a hard stop.
