2025 Cicadas Monthly. The two cicada broods were projected to emerge in a combined 17 states across the south and midwest. Brood xix has been dormant for the past 13 years, but will soon be.

Where billions of cicadas will emerge this spring (and over the next decade), in one map. 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.