U.S.
Mosquito Season is Here -- and These Cities Are Seeing the Biggest Swarms
Mosquito season is officially here — and some U.S. cities are feeling it more than others. According to Orkin's 2025 Top 50 Mosquito Cities List, Los Angeles claims the No. 1 spot for the fourth year in a row, with fast-climbing cities like Detroit, Cleveland and Denver making major moves into the top 10.
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[{"type":"text","content":"As outdoor summer activities kick off, Orkin unveils the nation's top mosquito hotspots, with Detroit, Cleveland and Denver climbing the ranks","length":146,"tagName":"p","attribs":{}},{"type":"text","content":"ATLANTA, May 20, 2025 /PRNewswire/ -- Mosquito season is officially here — and some U.S. cities are feeling it more than others. According to Orkin's 2025 Top 50 Mosquito Cities List, Los Angeles claims the No. 1 spot for the fourth year in a row, with fast-climbing cities like Detroit, Cleveland and Denver making major moves into the top 10.","length":373,"tagName":"p"},{"type":"image","alt":"Pest control leader Orkin is supporting a CDC Foundation summit focused on improving control methods for the Aedes aegypti mosquito, which can carry and spread Zika virus.","displaySize":"","headline":null,"caption":"Pest control leader Orkin is supporting a CDC Foundation summit focused on improving control methods for the Aedes aegypti mosquito, which can carry and spread Zika virus.","className":"","disableSlideshowImg":false,"size":{"original":{"width":400,"height":212,"url":"https://media.zenfs.com/en/prnewswire.com/51204f2541a23111ae1893b71379ac18"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/tUqkzbpVDhHCBaqt7JK_rg--/YXBwaWQ9aGlnaGxhbmRlcjt3PTcwNTtoPTM3NDtjZj13ZWJw/https://media.zenfs.com/en/prnewswire.com/51204f2541a23111ae1893b71379ac18","width":400,"height":212}},"href":"https://mma.prnewswire.com/media/472046/Orkin_Tag_Hrz_4CP_Logo.html","hrefExternal":true,"rel":"nofollow"},{"type":"text","content":"The annual list is based on the number of new residential mosquito treatments performed by Orkin from April 2024 through March 2025. As summer outdoor activities ramp up, so does the need for proactive mosquito control to help protect health and comfort.","length":254,"tagName":"p"},{"type":"text","content":"Chicago, New York, Atlanta and Detroit round out this year's top five, with Detroit making its first-ever appearance in the top rankings. Cleveland and Denver also broke into the top 10 for the first time, signaling larger mosquito pressure in northern cities as temperatures climb. California remains a stronghold for mosquito activity overall, with five cities in the Top 50: Los Angeles, San Francisco, Sacramento, San Diego and Fresno. With high temperat...