Philadelphia-area homes are plagued by rodents, according to new Census data.
The American Housing Survey figures released this month show that 18 percent of households in the Philadelphia-Camden-Wilmington metro area reported having seen mice or rats within the past year.
That figure was the highest in the country, according to a Bloomberg analysis of the data, which was released for 25 of the nation's largest metropolitan areas.
Rodents appeared to be a particularly big problem in the Northeast corridor: In the share of households reporting mice or rat sightings, Philadelphia was followed by the Boston, New York and Washington, D.C., metro areas.
Philadelphia fared better when it came to cockroaches: About 7 percent of metro-area households reported sightings in the past year. That put the region 13th in the Bloomberg analysis.
New Orleans, where 41 percent of households reported roaches, was the most cockroach-plagued city.