Mosquito questions, answered
What Are the 10 Worst States for Mosquitoes?
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The 2026 top 10, according to OutsideOnline.com
OutsideOnline.com published its 2026 ranking of the worst mosquito states, and the winners are familiar. Texas takes the top spot with more than 85 mosquito species thriving in East Texas forests and along the Gulf Coast. Florida follows, with mosquitoes active nearly year-round in its subtropical climate and more than 80 species calling it home.
New York ranks third, with over 70 species spread from city parks to Adirondack trails. Louisiana’s bayous and swamps give it a relentless March-to-September season across 68 species. Georgia brings 60-plus species in its forests and coastal marshes.
Alabama’s Gulf moisture and forests keep populations strong from spring through fall. South Carolina’s marshes and summer rains support 61 species. North Carolina stretches from mountains to coast with nearly 60 species. Kentucky’s hot, humid summers fuel April-to-September activity. Michigan rounds out the list, where Great Lakes waterways create ideal summer habitat after harsh winters.
What Terminix's 2026 data shows
A second ranking comes from Terminix, which based its 2026 report on 2025 service data from more than 300 branches. It measures something different: where homeowners most often paid for mosquito treatments. Texas, California, and Florida lead its state list, followed by Pennsylvania, Kentucky, Georgia, Michigan, and New York.
Its city ranking tells a similar story with a twist. New York City claimed the number one spot, which Terminix credits to an exceptionally warm and wet stretch of weather. Dallas-Fort Worth, Los Angeles, Philadelphia, and Atlanta round out the top five cities.
Take these lists for what they are. They reflect where one company’s customers needed help, and Rentokil, which owns Terminix, does not operate branches in every state. They are useful snapshots, not scientific censuses. Still, when two independent rankings agree that Texas, Florida, and New York are brutal, it is a safe bet they are right.
Where does New Jersey land?
New Jersey does not appear in the top 10 of either 2026 ranking. Before anyone celebrates, consider what the rankings measure. Terminix counts its own service calls, and OutsideOnline weighs climate and habitat. Neither one runs traps in the Meadowlands.
Anyone who has spent August on the Jersey Shore knows the truth. New Jersey’s salt marshes, Pine Barrens wetlands, and dense suburbs full of containers, gutters, and kiddie pools produce enormous mosquito pressure. The state supports dozens of species, including the aggressive Asian tiger mosquito that bites all day long.
Rutgers University researchers have documented mosquito season stretching longer as the climate warms, with southern species pushing north into the state. And every summer, all 21 county mosquito control programs spray and larvicide from spring through fall. A state does not fund that kind of operation unless the mosquitoes are genuinely bad. Rankings are fun, but NJ residents do not need a list to know.
Why these states breed so many mosquitoes
The recipe is simple: heat, humidity, and standing water. Warm temperatures speed up the mosquito life cycle, letting populations explode in weeks instead of months. Humidity keeps adults alive longer. And standing water, from swamps and bayous to gutters and storm drains, is where every mosquito begins.
The worst states combine all three for most of the year. Florida and Louisiana get subtropical warmth and daily summer rains. Texas adds sheer size, with deserts on one end and humid Gulf plains on the other. Even northern states like Michigan and New York make the lists because their summers deliver intense, concentrated breeding in lakes, wetlands, and cities full of containers.
Two mosquito groups drive most of the misery in these states, according to Terminix: Aedes, the daytime biters that breed in small containers, and Culex, the evening biters tied to West Nile virus.
What to do if you live in mosquito country
Wherever you live, the playbook is the same. Dump standing water every few days, since mosquitoes can breed in a bottle cap. Clean gutters, cover rain barrels, and flip over toys and tarps. Keep grass trimmed and shrubs thinned so there are fewer cool, shady resting spots.
Protect yourself with an EPA-registered repellent when you are outside at dawn or dusk, and make sure window screens fit tight.
And if your summers feel like a top-10 state even when the rankings disagree, professional help makes a real difference. Bite Back treats New Jersey yards with barrier applications aimed at the vegetation where mosquitoes rest, cutting the local population instead of just swatting at it. You cannot change your state’s climate, but you can change your backyard.
Quick answers
What are the 10 worst states for mosquitoes?
According to OutsideOnline.com's 2026 ranking, the 10 worst states are Texas, Florida, New York, Louisiana, Georgia, Alabama, South Carolina, North Carolina, Kentucky, and Michigan. Terminix's 2026 report, based on its service data, largely agrees, putting Texas, California, and Florida at the top. Rankings vary by method, but heat, humidity, and standing water decide every list.
What state has the most mosquitoes?
Texas. It tops both the OutsideOnline.com 2026 ranking and Terminix's 2026 report. The state hosts more than 85 mosquito species, with the heaviest populations in the humid forests of East Texas and along the Gulf Coast. Even its cities, including Houston, deal with intense mosquito pressure every summer.
What states have the fewest mosquitoes?
According to Terminix's 2026 report, the states with the fewest mosquitoes are Nevada, Idaho, Utah, Vermont, and South Dakota. Dry, windy, and cooler climates make these states inhospitable to breeding, which is the mirror image of what makes Texas and Florida so buggy.
Is New Jersey one of the worst states for mosquitoes?
Not in the 2026 rankings, but that says more about the methods than about NJ summers. Terminix ranks by its own service calls and OutsideOnline weighs climate and habitat, and neither crowns New Jersey. Still, the state's marshes, Shore towns, and suburbs breed heavy mosquito pressure all summer, which is why all 21 counties run spray programs.
Rankings aside, NJ mosquitoes are bad enough.
New Jersey may not top the national lists, but one August evening in Monmouth County tells the real story. Bite Back treats NJ yards with barrier applications that knock down mosquitoes where they rest, so the national rankings can stay someone else's problem. Get a free quote today.
Serving backyards across New Jersey.
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