RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4068 locations in the last 30 days (4242 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

60,241 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/14/20263310 N AVERS AVEAvondale30Completed12 daysMobile DeviceCity 311
9/3/20253558 N PULASKI RDIrving Park30Completed12 daysInternetCity 311
9/19/20256935 W 64TH STClearing13Completed12 daysAlderman's OfficeCity 311
9/3/20256265D N NORTHWEST HWYNorwood Park41Completed12 daysMobile DeviceCity 311
8/13/20266025 S MCVICKER AVEClearing13Completed12 daysInternetCity 311
8/27/20261700 S LOOMIS STLower West Side25Completed12 daysMobile DeviceCity 311
7/18/20265906 N MERRIMAC AVENorwood Park45Completed12 daysInternetCity 311
7/18/20265654 W BYRON STPortage Park38Completed12 daysInternetCity 311
9/27/20261351 N RIDGEWAY AVEHumboldt Park36Completed12 daysMobile DeviceCity 311
7/18/20265011 N CENTRAL AVEJefferson Park45Completed12 daysMobile DeviceCity 311
8/31/2025733 E 80TH STChatham6Completed12 daysPhone CallCity 311
9/11/20252436 W CORTEZ STWest Town36Completed12 daysPhone CallCity 311
8/19/20263518 N FREMONT STLake View44Completed12 daysMobile DeviceCity 311
9/17/20252054 W MORSE AVEWest Ridge40Completed12 daysInternetCity 311
9/3/20256334 N MOBILE AVENorwood Park39Completed12 daysPhone CallCity 311
9/25/20262227 N PARKSIDE AVEBelmont Cragin36Completed12 daysInternetCity 311
9/27/20263248 N LONG AVEPortage Park30Completed12 daysInternetCity 311
8/29/20251350 W HUBBARD STWest Town1Completed12 daysInternetCity 311
7/8/20265216 W BERENICE AVEPortage Park30Completed12 daysMobile DeviceCity 311
8/27/20261131 W DRUMMOND PLLincoln Park43Completed12 daysMobile DeviceCity 311
8/14/20251746 W 21ST STLower West Side25Completed12 daysAlderman's OfficeCity 311
8/27/20261421 W 17TH STLower West Side25Completed12 daysMobile DeviceCity 311
8/21/20261845 W OHIO STWest Town36Completed12 daysInternetCity 311
8/22/20261134 W PATTERSON AVELake View44Completed12 daysMobile DeviceCity 311
10/31/20262928 N ALBANY AVEAvondale35Completed12 daysPhone CallCity 311
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