When Will Cicadas Emerge In Chicago 2024.  — hundreds of periodical cicadas, which have emerged in the chicago area for the first time in 17 years, can be seen on a tree and in the grass friday at the morton. Periodical cicadas only exist in two other countries — fiji and india.

 — when will the cicadas emerge and for how long? Periodical cicadas only exist in two other countries — fiji and india.