There are non-periodical cicadas that have an annual lifecycle, but the ranges of the various broods of periodical cicadas do not overlap a whole lot. The Great

There are non-periodical cicadas that have an annual lifecycle, but the ranges of the various broods of periodical cicadas do not overlap a whole lot. The Great Eastern Brood is the biggest of these and its range roughly corresponds to the most densely populated region of the country, so most people who experience periodical cicadas experience these ones.