RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4208 locations in the last 30 days (4391 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.

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

59,238 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/8/20254432 N CAMPBELL AVELincoln Square47Completed10 daysMobile DeviceCity 311
6/2/20244431 S GREENWOOD AVEKenwood4Completed1 dayInternetCity 311
11/18/20254431 S CALUMET AVEGrand Boulevard3Completed2 daysPhone CallCity 311
3/23/20264431 N RACINE AVEUptown46Completed1 dayMobile DeviceCity 311
3/30/20264431 N PAULINA STUptown47Completed1 dayInternetCity 311
10/1/20264431 N PAULINA STUptown47Completed14 daysPhone CallCity 311
11/5/20264431 N MULLIGAN AVEPortage Park38Open—InternetCity 311
7/29/20264431 N MULLIGAN AVEPortage Park38Completed1 dayInternetCity 311
8/10/20264431 N MERRIMAC AVEPortage Park38Completed14 daysAlderman's OfficeCity 311
8/10/20264431 N MERRIMAC AVEPortage Park38Completed14 daysAlderman's OfficeCity 311
6/16/20264431 N KIMBALL AVEAlbany Park33Completed6 daysMobile DeviceCity 311
4/22/20264431 N KEYSTONE AVEAlbany Park39Completed2 daysPhone CallCity 311
4/16/20264431 N KEYSTONE AVEAlbany Park39Completed4 daysAlderman's OfficeCity 311
8/13/20264431 N HERMITAGE AVEUptown47Completed14 daysInternetCity 311
7/15/20264431 N CHRISTIANA AVEAlbany Park33Completed7 daysAlderman's OfficeCity 311
6/5/20264431 N CENTRAL PARK AVEAlbany Park33Completed4 daysInternetCity 311
9/5/20254430 W THOMAS STHumboldt Park37Completed12 daysPhone CallCity 311
9/23/20264430 S WHIPPLE STBrighton Park12Completed7 daysMobile DeviceCity 311
9/23/20264430 S LAWLER AVEGarfield Ridge22Completed8 daysPhone CallCity 311
5/6/20264430 S EMERALD AVENew City15Completed1 dayPhone CallCity 311
8/27/20264430 N PARKSIDE AVEPortage Park38Completed13 daysInternetCity 311
5/29/20264430 N PARKSIDE AVEPortage Park38Completed4 daysInternetCity 311
6/17/20264430 N PARKSIDE AVEPortage Park38Completed8 daysInternetCity 311
8/23/20254430 N PARKSIDE AVEPortage Park38Completed5 daysInternetCity 311
6/7/20264430 N MULLIGAN AVEPortage Park38Completed4 daysInternetCity 311
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