Cicada 2025 Factset. A rare burst of billions of cicadas will rewire our ecosystems for years to come. A rare emergence of cicadas is coming in 2025 with over a trillion insects set to make an appearance across the country and potentially overlap in two states.

2025 is the last time that all seven named periodical cicada species will emerge as adults in the same year until 2037. The exact timing depends on soil.