When you ask which state has the most bed bugs, the answer changes with the data. Michigan, Illinois, Ohio, Maryland, New York, and Pennsylvania consistently appear near the top, with city-level hotspots like Chicago, New York City, Philadelphia, Baltimore, and several Ohio metros driving many reports.
Researchers track bed bugs in different ways, from treatment counts to complaint maps to travel-risk studies. You get a clearer picture when you look at both state totals and the cities inside them.
Dense urban areas often account for a large share of bed bug infestations.
The Short Answer: Which States Rank Highest
Illinois, Maryland, Ohio, Michigan, New York, and Pennsylvania most often appear near the top of bed bug rankings. Bed bug reports cluster around major metros, so a state’s high ranking often reflects a few very active cities.
Why Michigan, Ohio, Maryland, And Illinois Show Up Repeatedly
Chicago keeps Illinois at the top, as Orkin ranked it the nation’s worst city for bed bugs again in 2026 according to Orkin’s 2026 bed bug city rankings. Cleveland, Columbus, and Cincinnati drive Ohio’s high numbers with frequent heavy treatment activity.
Baltimore’s strong presence on national lists keeps Maryland high. Michigan appears often in traveler-risk reports and complaint maps.
Why New York And Pennsylvania Still Matter In National Rankings
New York City generates a large share of state-level bed bug activity, pushing New York high in rankings. Philadelphia does the same for Pennsylvania, regularly appearing in city-based infestation lists.
Why The Rankings Change Depending On The Source
Each ranking method measures a different kind of bed bug activity. Some lists focus on treatment volume, while others count public complaints.
Travel studies may emphasize exposure risk rather than confirmed infestations.
Treatment Volume Vs. Complaint Maps Vs. Travel Risk Studies
Treatment-based rankings track how often professionals handle bed bug treatment and bed bug treatments, which favors big cities with more inspections and residents. Complaint maps show where people report problems.
Travel-risk studies weigh how likely you are to encounter bed bugs in hotels, transit hubs, and dense urban corridors.
Why City-Level Data Can Tell A Different Story Than State Totals
State totals can hide that one or two cities drive most of the numbers. A state may rank high because Chicago, New York City, or Philadelphia has intense activity, while smaller towns see far fewer issues.
City-level data gives a better sense of where your risk is highest.
What Drives Hotspots Across The U.S.
Hotspots form where people move often and live close together. Travel, multiunit housing, and older buildings create easy pathways for bed bug infestations to spread from one room, apartment, or suitcase to the next.
Travel, Hotels, And Public Transit As Spread Factors
Bed bugs hitch rides in luggage, clothing, and personal items, making airports, hotels, buses, and trains common transfer points. Places with heavy visitor turnover see more recurring issues because a single infested bag can start a new problem quickly.
Apartments, Older Buildings, And Population Density
Apartments and condominiums create close quarters that help infestations move between units through walls, hallways, and shared furniture. Older buildings add more cracks, gaps, and hiding spots.
Dense neighborhoods raise the odds that an infestation will spread before people notice.
What To Do If You Live In Or Visit A High-Risk Area
If you spend time in a hotspot, early detection and prevention matter most. Small checks after travel and simple home habits can lower your chance of bringing bed bugs back.
How To Spot Early Signs Like Bed Bug Bites And Mattress Evidence
Watch for clusters of itchy bed bug bites on exposed skin, tiny dark spots on sheets, shed skins, and live bugs near mattress seams or headboards. Look for tiny rust-colored stains or a musty odor near sleeping areas.
Early clues are easier to manage than a full infestation.
Prevention Steps Including Mattress Protectors
Use mattress protectors to reduce hiding places.
Inspect hotel beds, luggage, and secondhand furniture before bringing anything home.
A well-fitted mattress protector makes routine inspections easier and limits where bugs can settle.
If you travel often or live in a high-risk area, keep those barriers in place for added protection.
