RatCity — Chicago Rat and Rodent Sightings Map

RatCity

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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.

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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

59,238 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/18/20265201 S MERRIMAC AVEGarfield Ridge23Completed10 daysInternetCity 311
9/18/20266315 W HENDERSON STDunning30Completed9 daysMobile DeviceCity 311
9/18/20265846 S NEWCASTLE AVEGarfield Ridge13Completed13 daysInternetCity 311
9/18/20262702 N ASHLAND AVELincoln Park32Completed12 daysInternetCity 311
9/18/20263626 N ASHLAND AVELake View47Completed13 daysPhone CallCity 311
9/18/20265216 W 63RD PLClearing13Completed13 daysMobile DeviceCity 311
9/18/20261217 N AVERS AVEHumboldt Park36Completed13 daysMobile DeviceCity 311
9/18/2026446 N HAMLIN AVEHumboldt Park37Completed11 daysPhone CallCity 311
9/18/20263728 N MARSHFIELD AVELake View47Completed13 daysInternetCity 311
9/18/20263730 N MARSHFIELD AVELake View47Completed13 daysInternetCity 311
9/18/20263740 N MARSHFIELD AVELake View47Completed13 daysInternetCity 311
9/18/20265200 S UNIVERSITY AVEHyde Park5Completed13 daysPhone CallCity 311
9/18/20263721 N KOSTNER AVEIrving Park30Completed12 daysPhone CallCity 311
9/18/20265024 N ALBANY AVEAlbany Park33Completed14 daysInternetCity 311
9/18/20265010 N ALBANY AVEAlbany Park33Completed14 daysInternetCity 311
9/18/20261625 E HYDE PARK BLVDHyde Park5Completed13 daysPhone CallCity 311
9/18/20263149 S PRINCETON AVEArmour Square11Completed5 daysInternetCity 311
9/18/20262605 N PARKSIDE AVEBelmont Cragin30Completed12 daysInternetCity 311
9/18/20264445 S MARSHFIELD AVENew City15Completed13 daysInternetCity 311
9/18/20261430 W ELMDALE AVEEdgewater48Completed7 daysMobile DeviceCity 311
9/18/20265525 S MOODY AVEGarfield Ridge13Completed13 daysInternetCity 311
9/18/2026949 E 54TH PLHyde Park5Completed13 daysInternetCity 311
9/18/20263415 N NORMANDY AVEDunning38Completed11 daysMobile DeviceCity 311
9/18/20263043 W WILSON AVEAlbany Park33Completed14 daysMobile DeviceCity 311
9/18/20261716 N PULASKI RDHumboldt Park26Completed13 daysMobile DeviceCity 311
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