RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4101 locations in the last 30 days (4285 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

59,447 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/11/20266200 W BELMONT AVEDunning30Completed2 daysAlderman's OfficeCity 311
8/9/20264535 W ADDISON STIrving Park30Completed11 daysMobile DeviceCity 311
9/13/20265419 W ROSCOE STPortage Park30Completed12 daysPhone CallCity 311
8/2/20265700 W SCHOOL STPortage Park30Completed10 daysPhone CallCity 311
6/3/20265520 W CORNELIA AVEPortage Park30Completed5 daysPhone CallCity 311
2/13/20265000 W GRACE STPortage Park30Completed3 daysAlderman's OfficeCity 311
6/16/20262840 N MULLIGAN AVEBelmont Cragin30Completed6 daysPhone CallCity 311
8/2/20265828 W HENDERSON STPortage Park30Completed10 daysInternetCity 311
5/11/20266200 W HENDERSON STDunning30Completed2 daysAlderman's OfficeCity 311
1/11/20263045 N NARRAGANSETT AVEBelmont Cragin30Completed1 dayInternetCity 311
8/8/20264737 W PATTERSON AVEPortage Park30Completed13 daysMobile DeviceCity 311
9/13/20265459 W BERENICE AVEPortage Park30Completed12 daysInternetCity 311
2/3/20265331 W NEWPORT AVEPortage Park30Completed1 dayPhone CallCity 311
2/13/20265200 W WAVELAND AVEPortage Park30Completed3 daysAlderman's OfficeCity 311
8/2/20263760 N HARDING AVEIrving Park30Completed11 daysPhone CallCity 311
6/8/20263517 N CICERO AVEPortage Park30Completed7 daysPhone CallCity 311
7/28/20266126 W EDDY STDunning30Completed10 daysMobile DeviceCity 311
8/2/20262830 N MCVICKER AVEBelmont Cragin30Completed10 daysInternetCity 311
9/22/20265905 W ADDISON STPortage Park30Completed14 daysMobile DeviceCity 311
9/4/20265056 W ADDISON STPortage Park30Completed13 daysInternetCity 311
2/13/20265100 W GRACE STPortage Park30Completed3 daysAlderman's OfficeCity 311
8/31/20253612 N KILBOURN AVEIrving Park30Completed12 daysInternetCity 311
10/15/20254238 W MELROSE STIrving Park30Completed8 daysPhone CallCity 311
5/11/20266100 W HENDERSON STDunning30Completed2 daysAlderman's OfficeCity 311
8/31/20252941 N MARMORA AVEBelmont Cragin30Completed12 daysInternetCity 311
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