RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4256 locations in the last 30 days (4445 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

58,615 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/19/202641 W 17TH STNear South Side3Completed3 daysInternetCity 311
6/19/202632 W 18TH STNear South Side3Completed4 daysInternetCity 311
6/19/20265547 S RUTHERFORD AVEGarfield Ridge13Completed3 daysInternetCity 311
6/19/20263808 N LINCOLN AVENorth Center47Completed4 daysInternetCity 311
6/19/20265316 N LINDER AVEJefferson Park45Completed6 daysInternetCity 311
6/19/20263515 W BELDEN AVELogan Square35Completed5 daysMobile DeviceCity 311
6/19/20266508 N NIXON AVENorwood Park41Completed6 daysPhone CallCity 311
6/19/20261814 N FREMONT STLincoln Park43Completed6 daysMobile DeviceCity 311
6/19/20265508 N NEW ENGLAND AVENorwood Park41Completed4 daysPhone CallCity 311
6/19/20262028 W MOFFAT STLogan Square32Completed3 daysMobile DeviceCity 311
6/19/20261624 W ALTGELD STLincoln Park32Completed5 daysInternetCity 311
6/19/20261910 N MOZART STLogan Square26Completed5 daysInternetCity 311
6/19/202610900 S TROY STMount Greenwood19Completed3 daysPhone CallCity 311
6/19/20265742 N SACRAMENTO AVEWest Ridge50Completed4 daysInternetCity 311
6/19/20262940 N KOSTNER AVEHermosa31Completed5 daysMobile DeviceCity 311
6/19/20262742 W AUGUSTA BLVDWest Town26Completed5 daysInternetCity 311
6/19/20263012 W CHASE AVEWest Ridge50Completed4 daysPhone CallCity 311
6/19/20265246 W WINONA STJefferson Park45Completed6 daysInternetCity 311
6/19/20265128 N LOTUS AVEJefferson Park45Completed4 daysMobile DeviceCity 311
6/19/20262531 N CALIFORNIA AVELogan Square1Completed3 daysMobile DeviceCity 311
6/19/20264556 W DEMING PLHermosa31Completed5 daysPhone CallCity 311
6/19/20265136 S MILLARD AVEWest Elsdon23Completed3 daysInternetCity 311
6/19/20265137 S HARPER AVEHyde Park4Completed4 daysInternetCity 311
6/19/20265641 N MANGO AVEJefferson Park45Completed4 daysMobile DeviceCity 311
6/19/2026555 W 87TH STAuburn Gresham21Completed4 daysInternetCity 311
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