New York City, home to the subway pizza rat, is surprisingly not America’s most rodent-infested city. That dubious honor goes to Chicago, according to a new analysis spotted by Thrillist.

A breakdown of the “50 Rattiest Cities” in the U.S. has been compiled by Orkin, a pest control service with locations across the country. The company tallied up the number of commercial and residential rodent treatments it carried out in each city over a period of 12 months (September 15, 2017 to September 15, 2018) and then ranked them. While the evidence is anecdotal, as it comes from just one company, it does reveal the areas where rat exterminators are in high demand.

This is the fourth year in a row that Chicago has been named the country’s rattiest city. Orkin isn’t the first to notice the city’s rodent problem, either. In July, Chicago was reportedly dubbed the “rat capital of the U.S.” by apartment search service RentHop. It reportedly received more rat complaints than any other city last year—nearly 51,000 total. According to RentHop’s analysis, New York City came in second place, followed by Washington, D.C. and Boston.

That isn’t too far off from Orkin’s latest analysis. New York comes in at third place, just after Los Angeles, and Washington, D.C. is fourth. The biggest boom in rat populations was seen in Portland, Maine, which jumped 19 spots from last year. Chance Strandell, residential service manager for Maine Pest Solutions, told New England Cable News that milder winters may be extending the rats’ breeding period. However, it’s unclear why rats seem to be multiplying in Maine in particular.

One pregnant rat can birth up to 12 babies in a single litter, and those pups can begin reproducing at just two months old. “So after a year, a busy pair of rat parents can have 15,000 descendants,” reports KATU in Portland, Oregon (number 24 on Orkin’s list).

Charleston, West Virginia, has also been teeming with rodents, having risen 17 spots from last year. Check out the full list of the 50 most rat-ridden cities below—and if you have musophobia (a fear of rats or mice), you may want to plot your move to one of the cities toward the bottom of the list.

1. Chicago, Illinois

2. Los Angeles, California

3. New York, New York

4. Washington, DC

5. San Francisco, California

6. Detroit, Michigan

7. Philadelphia, Pennsylvania

8. Cleveland, Ohio

9. Baltimore, Maryland

10. Denver, Colorado

11. Minneapolis-St. Paul, Minnesota

12. Dallas-Fort Worth, Texas

13. Boston, Massachusetts

14. Seattle, Washington

15. Atlanta, Georgia

16. Indianapolis, Indiana

17. Miami-Fort Lauderdale, Florida

18. Hartford, Connecticut

19. Pittsburgh, Pennsylvania

20. Cincinnati, Ohio

21. Milwaukee, Wisconsin

22. Charlotte, North Carolina

23. Houston, Texas

24. Portland, Oregon

25. Columbus, Ohio

26. San Diego, California

27. Raleigh-Durham, North Carolina

28. Buffalo, New York

29. New Orleans, Louisiana

30. Norfolk, Virginia

31. Richmond, Virginia

32. Albany, New York

33. Kansas City, Missouri

34. Portland, Maine

35. Nashville, Tennessee

36. St. Louis, Missouri

37. Sacramento, California

38. Greenville, South Carolina

39. Grand Rapids, Michigan

40. Phoenix, Arizona

41. Orlando, Florida

42. Tampa, Florida

43. Burlington, New York

44. Champaign, Illinois

45. Rochester, New York

46. Syracuse, New York

47. Charleston, West Virginia

48. Dayton, Ohio

49. Memphis, Tennessee

50. Flint, Michigan

[h/t Thrillist]