3In a new study on urban cleanliness, the New York-Newark-Jersey City metropolitan area has been crowned the dirtiest in the United States , with Newark and Jersey City in New Jersey playing significant roles in dragging down the region’s overall score.

The research, conducted by Oxi Fresh, a national carpet cleaning franchise, highlights persistent issues like pest infestations, litter, and poor air quality that plague these densely populated hubs.

The study, titled “The Cleanest Cities in the United States: A 2025 Study,” evaluated 35 major U.S. metropolitan areas based on seven key criteria: population density, prevalence of rodents and cockroaches, vandalism, litter, air quality, and tap water quality.

Each area received a cleanliness score out of 700 and a letter grade from A

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