RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4271 locations in the last 30 days (4459 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

58,726 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
12/28/20251015 W CULLERTON STLower West Side25Completed2 daysInternetCity 311
12/28/20255103 W LEXINGTON STAustin24Completed1 dayPhone CallCity 311
12/28/20253520 W IRVING PARK RDIrving Park33Completed1 dayMobile DeviceCity 311
12/28/20254300 S ST LOUIS AVEBrighton Park12Completed1 dayMobile DeviceCity 311
12/28/20254632 S EVANS AVEGrand Boulevard4Completed1 dayInternetCity 311
12/28/20254636 S EVANS AVEGrand Boulevard4Completed1 dayInternetCity 311
12/28/20257347 S KEDZIEChicago Lawn18Completed1 daySalesforce Mobile AppCity 311
12/28/20254057 W HARRISON STWest Garfield Park24Completed1 dayMobile DeviceCity 311
12/28/20253431 N HOYNE AVENorth Center32Completed1 dayInternetCity 311
12/28/20251868 N HALSTED STLincoln Park43Completed1 dayInternetCity 311
12/28/20253427 N HOYNE AVENorth Center32Completed2 daysInternetCity 311
12/28/20254743 N MAPLEWOOD AVELincoln Square40Completed1 dayInternetCity 311
12/28/20253704 N MOZART STIrving Park35Completed1 dayInternetCity 311
12/28/20255424 N MOBILE AVEJefferson Park45Completed2 daysMobile DeviceCity 311
12/28/20252136 N SEMINARY AVELincoln Park43Completed1 dayInternetCity 311
12/28/20253923 W 85TH PLAshburn18Completed1 dayInternetCity 311
12/28/20256124 W NEWPORT AVEDunning30Completed1 dayInternetCity 311
12/28/20256120 W NEWPORT AVEDunning30Completed1 dayInternetCity 311
12/28/20252620 W POTOMAC AVEWest Town26Completed0 daysMobile DeviceCity 311
12/29/20251471 W IRVING PARK RDLake View46Completed1 dayMobile DeviceCity 311
12/29/20255018 S CICERO AVEGarfield Ridge23Completed0 daysInternetCity 311
12/29/20258505 S YATES BLVDSouth Chicago7Completed0 daysInternetCity 311
12/29/202511133 S PEORIA STMorgan Park21Completed0 daysPhone CallCity 311
12/29/20255103 W WASHINGTON BLVDAustin28Completed1 dayPhone CallCity 311
12/29/2025255 W SWANN STFuller Park20Completed2 daysPhone CallCity 311
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