RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4157 locations in the last 30 days (4343 reports) · Last sighting 20 hours ago

📰 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
11/2/20261838 W WARNER AVENorth Center47Open—Alderman's OfficeCity 311
10/31/20261215 E HYDE PARK BLVDHyde Park4Open—Mobile DeviceCity 311
10/26/20264550 W MAYPOLE AVEWest Garfield Park28Open—Phone CallCity 311
11/3/20264211 N WOLCOTT AVENorth Center47Open—Phone CallCity 311
11/2/2026850 W ADDISON STLake View44Open—InternetCity 311
11/2/20263510 S LOWE AVEBridgeport11Open—Phone CallCity 311
10/26/20263655 N SACRAMENTO AVEIrving Park35Open—InternetCity 311
11/3/20262315 W MEDILL AVELogan Square32Open—Mobile DeviceCity 311
10/26/20267924 S LOWE AVEAuburn Gresham6Open—InternetCity 311
11/2/20261637 W MELROSE STLake View32Open—InternetCity 311
11/6/20262434 W BERWYN AVELincoln Square40Open—InternetCity 311
10/26/20262935 N ALBANY AVEAvondale35Open—Mobile DeviceCity 311
11/2/202610740 S EMERALD AVERoseland21Open—Phone CallCity 311
11/2/20265647 S AUSTIN AVEGarfield Ridge13Open—Mobile DeviceCity 311
11/5/20261533 N KEYSTONE AVEHumboldt Park26Open—Mobile DeviceCity 311
11/3/20269741 S HALSTED STWashington Heights21Open—Phone CallCity 311
11/2/20262943 N HAMLIN AVEAvondale31Open—Mobile DeviceCity 311
11/3/202611725 S INDIANA AVEWest Pullman9Open—Mobile DeviceCity 311
11/2/20261331 W EDDY STLake View44Open—InternetCity 311
11/3/20263319 N OSAGE AVEDunning38Open—Mobile DeviceCity 311
10/26/20262332 W JACKSON BLVDNear West Side27Open—InternetCity 311
10/27/20265659 W PATTERSON AVEPortage Park38Open—Phone CallCity 311
10/31/20261804 W ELLEN STWest Town1Open—Mobile DeviceCity 311
11/3/20268109 S MUSKEGON AVESouth Chicago7Open—Mobile DeviceCity 311
10/30/20268300 S BRANDONSouth Chicago10Open—Salesforce Mobile AppCity 311
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