There are a number of factors to consider when picking the best online sportsbook in Illinois:
A license → This is a crucial factor because a sportsbook that is not licensed cannot be trusted. If a sportsbook is licensed in a state other than Illinois it is still perfectly legal to sign-up to the sportsbook but you will not be able to deposit and withdraw in the state of Illinois. You should under no circumstances consider signing up to an offshore sportsbook - they are not licensed in the US and are therefore not liable.
High-value odds → This point isn't rocket science. Ultimately you should place a wager for fun and to potentially earn yourself some money. If a sportsbook consistently offers you low value odds, you're not going to make money and its not going to be fun.
Wide selection of bets → First, your sportsbook should offer a good selection of sports and events for you to wager on. Second, your sportsbook should also offer different types of bets, this can include moneylines, parlays, teasers and point spreads.
A generous but honest welcome bonus → When you sign-up to a sportsbook in a state like Illinois you should expect to be given a nice big bonus. Why? Well, because you're worth it. As a resident of Illinois, you could, in the eyes of your potential sportsbook, represent a lifelong customer and therefore anything that encourages you to sign-up to their sportsbook now would be well worth their money. New customers tend to stick with their sportsbook of they are satisfied with their product because it takes time and effort to get to know a new product. That is why in such a new market, with millions of potential new customers, sportsbooks are offering some truly eye-watering promos. However, in an effort to beat the competition, some sportsbooks have made some misleading claims - including unrealistic turnover requirements. That is why we suggest you do not necessarily just look for the biggest bonus but also the most honest one which offers the most value.