RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4268 locations in the last 30 days (4454 reports) · Last sighting 20 hours ago

📰 Blog
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What am I looking at?

Each circle is a Chicago neighborhood. The number is its report count — click one to zoom in and see individual sightings there.

32080fewer → more

Colors are relative to what’s currently on screen, so they adjust as you switch time ranges.

Zoomed into a neighborhood or zip? Same colors group nearby reports, and a bright dot means that exact spot’s been reported more than once.

📰 This week’s rat recap

Weekly Rat Trends — Oct 26–Nov 1, 2026

  • 🐀 1,021 new reports — down 9% from the week before
  • 👑 Lake View is Rat King with 70 reports
  • 📈 Biggest jump: Lincoln Park, up 15 from last week
  • 🏙️ The city took 11.2 days on average to resolve a complaint
Read the full recap →

Why Chicago keeps score on its rats

Chicago has topped national rankings of the rattiest U.S. cities for over a decade running — a reputation the city itself takes seriously enough to run one of the country’s most active 311 rodent-complaint programs. Every baiting request, burrow report, and complaint filed with the city becomes a public record. RatCity turns that record, plus reports from people who live here, into a map you can actually use: is this block bad? Is it getting worse? Which neighborhood is winning (or losing) the fight this month?

What’s actually on the map

Most of the data is Chicago’s own — every “Rodent Baiting/Rat Complaint” filed through 311, pulled in automatically once a day so the map never goes stale. Layered on top are sightings reported directly by visitors, matched to the same neighborhood and zip-code boundaries the city uses, so a resident’s report and an official 311 complaint carry equal weight on the map.

Reading the map

Circles are sized and colored by how many reports a neighborhood has racked up — blue is quiet, red means trouble. The Day / Week / 30 Days / Year toggle up top changes the window, so you can see whether a neighborhood’s rat problem is a one-week blip or a year-long trend. Whoever’s in the lead gets crowned the neighborhood Rat King in the sidebar, a title that changes hands as new reports come in.

Noticed a rat that isn’t on the map yet? Use “Report a sighting” above — it takes under a minute and goes live as soon as it’s reviewed. Curious about where the data actually comes from or how reports are moderated? See the About page for the full breakdown.

Want more? The blog has weekly trend recaps and guides on Chicago’s rat problem and how to keep it out of your home.

Browse every sighting

59,354 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/26/20269915 S PEORIA STWashington Heights21Completed3 daysPhone CallCity 311
5/26/20265401 S KARLOV AVEWest Elsdon23Completed2 daysPhone CallCity 311
5/26/20261837 N FREMONT STLincoln Park43Completed3 daysInternetCity 311
5/26/20264449 N MELVINA AVEPortage Park38Completed2 daysMobile DeviceCity 311
5/26/20266418 N WAYNE AVERogers Park49Completed3 daysPhone CallCity 311
5/26/20261715 N FRANCISCO AVEWest Town26Completed6 days—City 311
5/26/20262818 N MOZART STAvondale35Completed2 days—City 311
5/26/20262042 W CHICAGO AVEWest Town36Completed2 days—City 311
5/26/20264015 W 83RD STAshburn18Completed1 day—City 311
5/26/20265578 S ARCHER AVEGarfield Ridge23Completed2 daysAlderman's OfficeCity 311
5/26/20265568 S ARCHER AVEGarfield Ridge23Completed2 daysAlderman's OfficeCity 311
5/26/20265039 W 52ND STGarfield Ridge23Completed2 daysPhone CallCity 311
5/26/2026420 S CLARK STLoop34Completed1 dayPhone CallCity 311
5/26/2026700 E 47TH STGrand Boulevard4Completed1 dayPhone CallCity 311
5/26/20261458 W 107TH STBeverly19Completed3 daysInternetCity 311
5/26/20262047 N TRIPP AVEHermosa35Completed1 dayPhone CallCity 311
5/26/20265345 N VIRGINIA AVELincoln Square39Completed1 dayPhone CallCity 311
5/26/20261037 W 97TH PLWashington Heights21Completed3 daysPhone CallCity 311
5/26/20262621 W CRYSTAL STWest Town26Completed1 dayPhone CallCity 311
5/26/20266410 S CAMPBELL AVEChicago Lawn16Completed3 daysPhone CallCity 311
5/26/20268314 S LASALLE STChatham6Completed3 daysPhone CallCity 311
5/26/20264853 W QUINCY STAustin28Completed8 daysPhone CallCity 311
5/26/20265028 W WEST END AVEAustin28Completed8 daysPhone CallCity 311
5/26/20266661 N CLARK STRogers Park49Completed1 dayAlderman's OfficeCity 311
5/26/20262322 W BELMONT AVENorth Center32Completed6 daysInternetCity 311
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