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The Conversation
The Conversation
Chris Simon, Senior Research Scientist of Ecology and Evolutionary Biology, University of Connecticut

Billions of cicadas are emerging, from Cape Cod to north Georgia – here’s how and why we map them

Three cicadas in North Carolina during the 2003 Brood IX emergence Chris Simon, CC BY-ND

If they’re in your area, you’ll know it from their loud droning, chirping and buzzing sounds. Cicadas from Brood XIV – one of the largest groups of cicadas that emerge from underground on a 13-year or 17-year cycle – are surfacing in May and June 2025 across 12 states. This large-scale biological event reaches from northern Georgia up into Indiana and Ohio and eastward through the mid-Atlantic, extending as far north as Long Island, N.Y. and Massachusetts.

Through mid-June, wooded areas will ring with cicadas’ loud mating calls. After mating, each female will lay hundreds of eggs inside small tree branches. Then the adult cicadas will die. When the eggs hatch six weeks later, new cicada nymphs will fall from the trees and burrow back underground, starting the cycle again.

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