Urban America is grappling with escalating rat infestations, posing significant public health and infrastructure challenges. Major cities like Los Angeles, Chicago, and New York City have been identified as the most affected, with Los Angeles recently surpassing Chicago as the top city for rat activity (orkin.com). These infestations not only threaten public health by spreading diseases but also damage infrastructure, highlighting the urgent need for effective pest control measures.
Chicago has held the title of the most rat-infested city in the United States for a decade, according to Orkin’s annual rankings. The city’s dense population and aging infrastructure, including numerous alleys and underground spaces, provide ideal habitats for rodents. In 2024, Chicago received 43,400 rat-related complaints, with neighborhoods like West Town, Lakeview, and Portage Park reporting the highest numbers (abc7chicago.com). To address this issue, Chicago has implemented various rodent control initiatives, such as distributing rat contraceptives in select neighborhoods to humanely reduce the rat population.
Los Angeles grapples with significant rat infestations, particularly in downtown areas and homeless encampments. The city’s Mediterranean climate and abundant food waste create ideal conditions for rodents. In October 2025, Yelp reported that Los Angeles topped the list for rat problems in the U.S., with residents and pest control experts noting increased rodent activity. Local media frequently highlight city cleanup efforts and rising complaint numbers, emphasizing the need for effective pest control measures (yahoo.com).
New York City’s dense housing, vast food service industry, and extensive subway system create an environment conducive to a thriving rat population. A 2023 study estimated approximately 3 million rats in the city, nearly a third of its human population. In response, the city has implemented measures such as introducing rat-proof trash bins and investing heavily in pest control. In December 2025, Mayor Eric Adams signed an executive order establishing the Office of Rodent Mitigation to coordinate efforts across city agencies and community organizations. Despite these initiatives, challenges persist across all boroughs. In 2024, rat complaint calls to NYC311 decreased by over 25% compared to the previous year, indicating progress in the city’s efforts (cbsnews.com).
Washington, D.C. faces increasing rat reports, particularly in Northwest neighborhoods and business districts. Investments in alleyway clearing and trash management aim to stem the problem, yet complaints to 311 remain high. Residents are encouraged to store garbage in metal or heavy plastic containers with tight-fitting lids, place trash outside shortly before pickup, and remove weeds and debris near buildings to reduce rat habitats (dc.gov).
San Francisco’s mild climate and housing density provide an ideal environment for rats. Infestations are frequently reported in tourist areas and parks, placing pressure on public services to manage rodent-related health risks. In February 2022, residents reported sightings of rats at the Helen Diller Civic Center Playground near City Hall, raising concerns among parents and health officials. Additionally, in October 2022, a severe rat problem in the Glen Park neighborhood was linked to a resident feeding large amounts of birdseed, attracting rodents and pigeons. The city has implemented measures such as deploying rat-proof trash bins and conducting alleyway clearing to address these issues (sf.gov).
Philadelphia’s historic architecture, aging sewer infrastructure, and large restaurant sector make it particularly vulnerable to rat outbreaks. The city’s dense population and numerous food establishments provide ample resources for rodents. In response, Philadelphia has implemented measures such as requiring property owners to prepare rodent control management plans before demolition or new construction with excavation. Additionally, the Department of Public Health’s Vector Control responds to complaints about rats in residences and public parks (phila.gov). Despite these efforts, challenges persist in effectively managing rat populations across the city.
Baltimore’s rat crisis is rooted in vacant homes, illegal dumping, and high poverty rates. (pestczar.com) The city declared a ‘War on Rats’ with targeted baiting, but progress is slow in hard-hit neighborhoods. (publicworks.baltimorecity.gov) Residents are encouraged to store garbage in metal or heavy plastic containers with tight-fitting lids, place trash outside shortly before pickup, and remove weeds and debris near buildings to reduce rat habitat (baltimorecity.gov).
Detroit’s population decline has left behind abandoned homes that provide shelter for rats (wrif.com). Extensive demolitions, insufficient sanitation, and food scarcity exacerbate the citywide infestation. In 2023, Detroit ranked ninth on Orkin’s list of cities with the worst rodent problems. The city has implemented measures such as requiring property owners to maintain ratproof conditions and promptly exterminate rodents. Additionally, the Environmental Enforcement Section educates the public on reducing rodent populations. Despite these efforts, challenges persist in effectively managing rat populations across the city.
Denver’s rapid population growth has spurred more rat reports, particularly around downtown developments. Environmental factors and construction disturb rats’ habitats, driving them into residential and commercial areas. In 2023, Denver ranked among the top cities for rodent infestations, according to Terminix. The city’s Pest Information Center offers resources on prevention and control. Residents are encouraged to report issues to 3-1-1 for assistance (denvergov.org).
Cleveland’s older building stock and persistent trash issues create a haven for rodents. The city battles to keep infestations in check, especially during warm months when rat activity spikes. In 2025, Cleveland ranked 11th on Orkin’s list of the most rat-infested U.S. cities, a slight improvement from the previous year. Residents are encouraged to store garbage in metal or heavy plastic containers with tight-fitting lids, place trash outside shortly before pickup, and remove weeds and debris near buildings to reduce rat habitats (clevelandohio.gov).
Seattle’s rapid urban growth has led to increased rat sightings, particularly in neighborhoods with numerous restaurants and food markets. In 2022, the Seattle-Tacoma metro area ranked 11th in the U.S. for rodent sightings, according to the American Housing Survey. The city’s dense commercial corridors and mixed residential neighborhoods concentrate both food service and household waste, providing ample resources for rats. Additionally, Seattle’s temperate climate supports a variety of flora, attracting insects and seeds that serve as food sources for rodents. To address these challenges, Seattle has implemented measures such as requiring property owners to maintain rat-proof conditions and promptly exterminate rodents. Residents are encouraged to store garbage in metal or heavy plastic containers with tight-fitting lids, place trash outside shortly before pickup, and remove weeds and debris near buildings to reduce rat habitats (kingcounty.gov).
Minneapolis’s aging sewer systems and expanding urban core contribute to persistent rat problems. Residents and city officials report upticks during wet, warm seasons. In 2023, Minneapolis ranked 11th on Orkin’s list of the most rat-infested U.S. cities. The city’s Pest Information Center offers resources on prevention and control. Residents are encouraged to store garbage in metal or heavy plastic containers with tight-fitting lids, place trash outside shortly before pickup, and remove weeds and debris near buildings to reduce rat habitats (ci.minneapolis.mn.us).
Boston grapples with significant rat issues amid its dense neighborhoods, historic buildings, and vibrant food scene. In 2024, the North End emerged as the city’s most rat-infested area, receiving 143 rodent complaints per 10,000 residents, an 81% increase from the previous year. City health officials actively monitor and map these complaints, with the North End frequently cited as a hotspot. In response, Boston has implemented measures such as deploying rodent-killing technology in sewers along Hanover Street, resulting in approximately 60 rat kills over 60 days (boston25news.com).
Atlanta’s warm climate and ongoing construction leave neighborhoods vulnerable to rat intrusion, especially in revitalizing urban corridors. In 2024, Terminix ranked Atlanta as the 10th most rat-infested city in the U.S., based on the number of extermination calls received. The city’s Rodent Control program, managed by the Fulton County Board of Health, investigates complaints and educates residents on minimizing exposure to rats. Additionally, residents are encouraged to store garbage in tightly covered cans, remove trash and debris from yards, and seal entry points to prevent rodent access (fultoncountyga.gov).
Dallas rounds out the list due to increases in reports linked to rapid growth and food waste problems in city centers. In 2024, Dallas ranked 22nd on Orkin’s list of the most rat-infested U.S. cities, based on the number of rodent treatments performed. Sanitation programs continue to expand in high-complaint districts, with the Dallas County Health and Human Services Department offering rodent control services and public education on prevention (dallascounty.org).
Rat infestations in major U.S. cities have escalated, with Chicago, Los Angeles, and New York City consistently topping the “rattiest” lists. This surge poses significant health risks, including the spread of diseases like leptospirosis and salmonella, and economic challenges due to infrastructure damage (theweek.com). Addressing this issue requires sustained pest control efforts, improved sanitation practices, and active community engagement to mitigate the adverse effects of urban rodent populations.