RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4187 locations in the last 30 days (4369 reports) · Last sighting 17 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 — Nov 2–Nov 8, 2026

  • 🐀 948 new reports — down 7% from the week before
  • 👑 Lake View is Rat King with 67 reports
  • 📈 Biggest jump: Logan Square, up 15 from last week
  • 🏙️ The city took 9.7 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

59,989 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/28/20259250 S BENNETT AVECalumet Heights8Completed3 daysPhone CallCity 311
5/1/20265128 S MASON AVEGarfield Ridge23Completed3 daysPhone CallCity 311
10/31/202510437 S CHRISTIANA AVEMount Greenwood19Completed3 daysPhone CallCity 311
12/12/20254881 W BLOOMINGDALE AVEAustin37Completed3 daysPhone CallCity 311
11/23/20254539 N MASON AVEPortage Park38Completed3 daysMobile DeviceCity 311
4/10/20262234 W 18TH PLLower West Side25Completed3 daysPhone CallCity 311
4/10/20261629 S ALLPORT STLower West Side25Completed3 daysPhone CallCity 311
5/26/20269631 S CARPENTER STWashington Heights21Completed3 daysMobile DeviceCity 311
12/12/20255023 W NELSON STBelmont Cragin31Completed3 daysPhone CallCity 311
12/1/20252041 W BYRON STNorth Center47Completed3 daysInternetCity 311
10/21/20252259 W WARREN BLVDNear West Side27Completed3 daysInternetCity 311
5/10/20266243 W FLETCHER STBelmont Cragin30Completed3 daysInternetCity 311
6/13/20261357 S BLUE ISLAND AVENear West Side28Completed3 daysInternetCity 311
5/1/20268548 S BISHOP STAuburn Gresham21Completed3 daysPhone CallCity 311
1/25/20266142 S ELLIS AVEWoodlawn20Completed3 daysInternetCity 311
6/29/20261800 W 48TH STNew City15Completed3 daysPhone CallCity 311
2/13/20262900 N MERRIMAC AVEBelmont Cragin30Completed3 daysAlderman's OfficeCity 311
12/26/20254437 S WALLACE STNew City15Completed3 daysPhone CallCity 311
3/27/20265237 W SCHOOL STPortage Park31Completed3 daysMobile DeviceCity 311
9/12/20252540 W ESTES AVEWest Ridge50Completed3 daysPhone CallCity 311
5/12/20263627 W 85TH PLAshburn18Completed3 daysAlderman's OfficeCity 311
1/9/20261239 W GRACE STLake View44Completed3 daysInternetCity 311
4/3/20266043 S FRANCISCO AVEChicago Lawn15Completed3 daysInternetCity 311
1/23/20261600 W 47TH STNew City15Completed3 daysPhone CallCity 311
4/24/20266300 W 59TH STGarfield Ridge13Completed3 daysMobile DeviceCity 311
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