RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4073 locations in the last 30 days (4255 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
9/27/20259121 S EAST END AVECalumet Heights8Completed6 daysInternetCity 311
6/17/20262431 W GRACE STNorth Center47Completed6 daysInternetCity 311
5/26/20262129 W MORSE AVEWest Ridge40Completed6 daysInternetCity 311
6/11/20261742 W ROSCOE STLake View47Completed6 daysMobile DeviceCity 311
9/26/20263447 N KOLMAR AVEIrving Park30Completed6 daysInternetCity 311
6/25/20268407 S MARSHFIELD AVEAuburn Gresham18Completed6 daysPhone CallCity 311
5/26/2026700 S KARLOV AVEWest Garfield Park24Completed6 daysAlderman's OfficeCity 311
6/30/20267016 N PAULINA STRogers Park49Completed6 daysMobile DeviceCity 311
10/28/20257427 S DREXEL AVEGreater Grand Crossing6Completed6 daysMobile DeviceCity 311
6/19/20261814 N FREMONT STLincoln Park43Completed6 daysMobile DeviceCity 311
9/19/20265227 N MAGNOLIA AVEEdgewater48Completed6 daysMobile DeviceCity 311
6/19/20265246 W WINONA STJefferson Park45Completed6 daysInternetCity 311
6/24/20264428 S PULASKI RDArcher Heights14Completed6 daysAlderman's OfficeCity 311
5/8/20261827 W NORWOOD STWest Ridge40Completed6 daysPhone CallCity 311
7/7/20263111 N SEMINARY AVELake View44Completed6 daysMobile DeviceCity 311
4/30/20264249 W 21ST STNorth Lawndale24Completed6 daysMobile DeviceCity 311
10/15/20258009 S FAIRFIELD AVEAshburn18Completed6 daysMobile DeviceCity 311
8/5/20254716 W SHAKESPEARE AVEBelmont Cragin26Completed6 daysMobile DeviceCity 311
9/24/202525 S OAKLEY BLVDNear West Side27Completed6 daysMobile DeviceCity 311
5/26/20265204 W WARNER AVEPortage Park38Completed6 daysPhone CallCity 311
6/18/20263508 N LOWELL AVEIrving Park30Completed6 daysInternetCity 311
5/8/20262131 N MASON AVEBelmont Cragin36Completed6 daysPhone CallCity 311
6/9/2026534 W DICKENS AVELincoln Park43Completed6 daysMobile DeviceCity 311
10/24/20252321 N PARKSIDE AVEBelmont Cragin36Completed6 daysMobile DeviceCity 311
4/16/20261454 W THOME AVEEdgewater48Completed6 daysMobile DeviceCity 311
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