Cicadas 2024 Map Illinois Counties. This spring, two broods of cicadas will emerge in the midwest and the southeast, in their first dual appearance since 1803. In a few weeks, over a dozen states will be abuzz as trillions of periodical cicadas will emerge.

A rare and likely massive emergence of two different broods of cicadas is expected in 2024 and while illinois is in a unique position to see it all unfold, where can. Maps of two cicada broods, reunited after 221 years.