How Long Will The Cicadas Be Here In 2024 In Usa. How long do cicadas live above ground? Periodical cicadas, which only live in midwestern and eastern states, spend either 13 or 17 years underground before coming out as adults in mass, synchronized emergences, while annual cicadas, which.

Billions of periodical cicadas have emerged after spending 13 or 17 years underground. This year, for the first time this century, two broods with contiguous territory are emerging simultaneously.