Por Renan Filho · 2026-10-12**Lead**
A widely followed annual ranking of America’s most rat-infested cities has been released, and while familiar names continue to dominate the top spots, a Midwestern city has surprised experts by cracking the top 10 for the first time. The list, compiled by a leading pest-control company based on the volume of rodent treatments performed across metropolitan areas, underscores the persistent and growing challenge of urban rat populations in the United States.
**Context**
For years, the ranking has been a reliable barometer of rodent activity in major U.S. cities. The data is drawn from the number of residential and commercial rodent treatments conducted by the company’s network of technicians, offering a proxy for the severity of infestations. Historically, large, dense urban centers with aging infrastructure and abundant food sources have topped the list. Chicago, for instance, has consistently held the number-one position, a reflection of its extensive subway system, dense alleyways, and the challenges posed by its climate and waste management.
This year’s ranking, however, includes a notable newcomer from the Midwest that has not appeared in the top 10 in recent memory. While the exact position is not disclosed in the public summary, the city’s entry into the elite group of most-infested cities has drawn attention from local officials and public health experts. The city in question has experienced rapid population growth and construction booms, which can disrupt rodent habitats and push rats into residential areas. Additionally, warmer-than-average winters in the region may have allowed rodent populations to survive and reproduce more successfully.
Other cities that remain in the top tier include New York, Los Angeles, Washington D.C., and San Francisco, all of which have long-standing battles with rats. The ranking also highlights a trend: cities in the Northeast and West Coast continue to report high rodent activity, but the Midwest is now emerging as a new hotspot. The surprise entry is seen as a wake-up call for local governments that may have underestimated the problem.
**Analise**
The inclusion of a Midwestern city in the top 10 is significant for several reasons. First, it suggests that rodent infestations are not confined to the traditional coastal urban centers. As the climate changes and cities expand, rats are adapting to new environments. The Midwest, with its combination of older housing stock, extensive sewer systems, and increasing urban density, provides ideal conditions for Norway rats and roof rats. Public health officials warn that rats are not just a nuisance; they carry diseases such as leptospirosis, hantavirus, and salmonella, and can cause structural damage by gnawing through wires and pipes.
Second, the ranking underscores the importance of integrated pest management strategies. Cities that have successfully reduced rat populations often employ a combination of improved sanitation, public education, and targeted baiting programs. The surprise entry may prompt the city’s government to allocate more resources to rodent control, including increased inspections of restaurants and waste disposal sites. The economic impact is also notable: rat infestations can lower property values, deter tourism, and increase health care costs.
Finally, the ranking serves as a reminder that urban rat problems are a nationwide issue. While the top 10 list captures the worst offenders, many smaller cities and towns also struggle with rodents. The pest-control industry has reported a steady increase in service calls across the country, driven by factors such as the rise of outdoor dining during the pandemic and the proliferation of garbage in public spaces. Without sustained investment in infrastructure and public health, the list of most-infested cities may continue to grow.
**Fontes**
This article is based on the annual ranking of rodent-infested cities published by Orkin, a national pest-control company. Orkin’s list is compiled from the number of rodent treatments performed in each metropolitan area from September of the previous year through August of the current year. Additional context comes from reports by the U.S. Centers for Disease Control and Prevention (CDC) on rodent-borne diseases, and from municipal pest control plans in cities such as Chicago and New York. No specific city names or exact rankings beyond the top 10 are cited to avoid reliance on unverified data.