RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4097 locations in the last 30 days (4281 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
6/16/20267075 N CALDWELL AVEForest Glen45Completed7 daysMobile DeviceCity 311
8/15/20259833 S CALHOUN AVESouth Deering7Completed7 daysAlderman's OfficeCity 311
7/2/20266351 W HERMIONE STNorwood Park39Completed7 daysPhone CallCity 311
6/17/20261648 S HARDING AVENorth Lawndale24Completed7 daysMobile DeviceCity 311
10/27/20257749 S PAULINA STAuburn Gresham17Completed7 daysPhone CallCity 311
6/17/20262620 S ST LOUIS AVESouth Lawndale22Completed7 daysInternetCity 311
10/16/20251117 W PATTERSON AVELake View44Completed7 daysMobile DeviceCity 311
10/28/20254921 N MERRIMAC AVEJefferson Park45Completed7 daysMobile DeviceCity 311
10/7/20256238 W BARRY AVEBelmont Cragin30Completed7 daysMobile DeviceCity 311
10/13/20251655 N MAPLEWOOD AVEWest Town1Completed7 daysMobile DeviceCity 311
10/8/20255042 S CHAMPLAIN AVEGrand Boulevard20Completed7 daysPhone CallCity 311
7/9/20264518 W PARKER AVEHermosa31Completed7 daysInternetCity 311
6/29/20262134 W IRVING PARK RDNorth Center47Completed7 daysInternetCity 311
10/15/20257106 N PAULINA STRogers Park49Completed7 daysPhone CallCity 311
7/22/2026473 W 27TH STBridgeport11Completed7 daysInternetCity 311
6/10/20262235 W LAWRENCE AVELincoln Square47Completed7 daysInternetCity 311
6/15/20261117 N CENTRAL PARK AVEHumboldt Park36Completed7 daysPhone CallCity 311
10/7/20254330 W ADAMS STWest Garfield Park28Completed7 daysAlderman's OfficeCity 311
8/1/20252645 W WABANSIA AVEWest Town26Completed7 daysMobile DeviceCity 311
10/7/20254703 N TROY STAlbany Park33Completed7 daysMobile DeviceCity 311
7/9/20269802 S MORGAN STWashington Heights21Completed7 daysPhone CallCity 311
10/27/20259517 S EUCLID AVESouth Deering7Completed7 daysPhone CallCity 311
9/30/20251018 N ROCKWELL STWest Town36Completed7 daysInternetCity 311
7/31/20253202 S EMERALD AVEBridgeport11Completed7 daysMobile DeviceCity 311
7/25/20255523 S NORMANDY AVEGarfield Ridge13Completed7 daysPhone CallCity 311
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