RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4015 locations in the last 30 days (4188 reports) · Last sighting yesterday

📰 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.

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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 — Nov 2–Nov 8, 2026

  • 🐀 948 new reports — down 7% from the week before
  • 👑 Lake View is Rat King with 67 reports
  • 📈 Biggest jump: Logan Square, up 15 from last week
  • 🏙️ The city took 9.7 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

60,241 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/20/20261812 S MILLARD AVENorth Lawndale24Completed9 daysInternetCity 311
10/25/20261812 N BISSELL STLincoln Park43Completed12 daysInternetCity 311
12/15/20251811W W CUYLER AVENorth Center47Completed1 dayPhone CallCity 311
12/16/20251811 W ROSCOE STNorth Center32Completed0 daysMobile DeviceCity 311
7/21/20261811 W LAKE STNear West Side27Completed9 daysInternetCity 311
10/23/20251811 W CORTLAND STLogan Square32Completed5 daysInternetCity 311
12/19/20251811 W BLOOMINGDALE AVELogan Square32Completed2 daysMobile DeviceCity 311
8/22/20251811 S CARPENTER STLower West Side25Completed6 daysAlderman's OfficeCity 311
10/8/20251811 N WELLS STLincoln Park43Completed7 daysInternetCity 311
10/22/20261810 S RACINE AVELower West Side25Completed11 daysInternetCity 311
9/26/20261810 S RACINE AVELower West Side25Completed10 daysInternetCity 311
11/24/20251810 S RACINE AVELower West Side25Completed0 daysInternetCity 311
10/23/20261810 S BLUE ISLAND AVELower West Side25Completed13 daysInternetCity 311
10/4/20251810 N MOZART STLogan Square26Completed4 daysMobile DeviceCity 311
8/24/20261810 N FREMONT STLincoln Park43Completed10 daysPhone CallCity 311
11/26/2025180 W RANDOLPH STLoop42Completed5 daysInternetCity 311
7/13/2026180 W RANDOLPH STLoop42Completed0 daysInternetCity 311
8/4/2025180 N LASALLE STLoop42Completed1 dayInternetCity 311
6/11/20261809 W RACE AVEWest Town36Completed5 daysMobile DeviceCity 311
10/6/20251809 W RACE AVEWest Town36Completed8 daysMobile DeviceCity 311
10/23/20261809 W NORWOOD STWest Ridge40Completed14 daysPhone CallCity 311
9/18/20261809 W EDDY STNorth Center47Completed13 daysInternetCity 311
7/14/20261809 W EDDY STNorth Center47Completed13 daysInternetCity 311
7/9/20261809 W ARMITAGE AVELogan Square32Completed11 daysMobile DeviceCity 311
11/6/20251809 W 17TH STLower West Side25Completed5 daysMobile DeviceCity 311
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