RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4029 locations in the last 30 days (4209 reports) · Last sighting 2 days 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
4/28/20266250 S MOZART STChicago Lawn15Completed2 daysPhone CallCity 311
4/28/20265431 N LINDER AVEJefferson Park45Completed2 daysMobile DeviceCity 311
4/28/20262537 N HALSTED STLincoln Park43Completed1 dayAlderman's OfficeCity 311
4/28/2026611 W PATTERSON AVELake View46Completed2 daysInternetCity 311
4/28/20262660 E 92ND STCalumet Heights7Completed3 daysInternetCity 311
4/28/20261337 W HENDERSON STLake View44Completed3 daysPhone CallCity 311
4/28/20266400 S RICHMOND STChicago Lawn15Completed2 daysInternetCity 311
4/28/20261119 S CENTRAL PARK AVENorth Lawndale24Completed1 dayPhone CallCity 311
4/28/20263042 W FULLERTON AVELogan Square35Completed2 daysAlderman's OfficeCity 311
4/28/20263946 W 16TH STNorth Lawndale24Completed1 dayPhone CallCity 311
4/28/20263559 S MAPLEWOOD AVEBrighton Park12Completed3 daysPhone CallCity 311
4/28/20263228 N OSAGE AVEDunning38Completed2 daysAlderman's OfficeCity 311
4/28/20263224 N OSAGE AVEDunning38Completed2 daysAlderman's OfficeCity 311
4/28/20263625 S LAKE PARK AVEOakland4Completed1 dayInternetCity 311
4/28/20265214 W WASHINGTON BLVDAustin37Completed2 daysPhone CallCity 311
4/28/20266237 N NAGLE AVENorwood Park39Completed1 dayInternetCity 311
4/28/202610800 S FAIRFIELD AVEMorgan Park19Completed1 dayPhone CallCity 311
4/28/20261900 S GROVE STArmour Square11Completed2 daysInternetCity 311
4/28/20261610 W FARGO AVERogers Park49Completed2 daysMobile DeviceCity 311
4/28/202611020 S HOMAN AVEMount Greenwood19Completed1 dayPhone CallCity 311
4/28/20261306 S THROOP STNear West Side28Completed3 daysPhone CallCity 311
4/28/20266931S S WOLCOTT AVEWest Englewood17Completed1 dayPhone CallCity 311
4/28/20263918 N KENNETH AVEIrving Park30Completed1 dayInternetCity 311
4/28/20263518 N HAMILTON AVENorth Center32Completed1 dayPhone CallCity 311
4/28/20261969 N HALSTED STLincoln Park43Completed1 dayAlderman's OfficeCity 311
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