RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4254 locations in the last 30 days (4439 reports) · Last sighting 21 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 — 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

59,238 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/24/20264541 N CLAREMONT AVELincoln Square47Completed13 daysPhone CallCity 311
5/5/20264541 N BEACON STUptown46Completed3 daysInternetCity 311
10/17/20254541 N ASHLAND AVEUptown47Completed6 daysAlderman's OfficeCity 311
7/31/20254541 N ASHLAND AVEUptown47Completed7 daysMobile DeviceCity 311
9/3/20254541 N ALBANY AVEAlbany Park33Completed7 daysMobile DeviceCity 311
12/8/20254540 W PARKER AVEHermosa31Completed1 dayAlderman's OfficeCity 311
8/13/20254540 S WALLACE STNew City15Completed8 daysAlderman's OfficeCity 311
9/30/20254540 S MOZART STBrighton Park12Completed7 daysAlderman's OfficeCity 311
9/26/20254540 S MOZART STBrighton Park12Completed3 daysPhone CallCity 311
10/9/20254540 S MOZART STBrighton Park12Completed11 daysAlderman's OfficeCity 311
10/20/20254540 S MOZART STBrighton Park12Completed7 daysPhone CallCity 311
9/18/20254540 S MOZART STBrighton Park12Completed8 daysAlderman's OfficeCity 311
6/22/20264540 S EVANS AVEGrand Boulevard4Completed3 daysMobile DeviceCity 311
10/1/20254540 N OAKLEY AVELincoln Square47Completed5 daysPhone CallCity 311
9/12/20264540 N LOCKWOOD AVEPortage Park45Completed11 daysInternetCity 311
9/21/20264540 N CLARENDON AVEUptown46Completed14 daysInternetCity 311
1/8/2026453 W ROSLYN PLLincoln Park43Completed1 dayPhone CallCity 311
4/16/2026453 N HAMLIN AVEHumboldt Park27Completed1 dayInternetCity 311
10/10/20254539 S SAWYER AVEBrighton Park12Completed10 daysPhone CallCity 311
4/8/20264539 S EMERALD AVENew City15Completed1 dayPhone CallCity 311
5/9/20264539 N SPAULDING AVEAlbany Park33Completed2 daysPhone CallCity 311
8/29/20264539 N SEELEY AVELincoln Square47Completed13 daysMobile DeviceCity 311
11/24/20254539 N SAWYER AVEAlbany Park33Completed4 daysMobile DeviceCity 311
9/18/20254539 N SAWYER AVEAlbany Park33Completed12 daysPhone CallCity 311
11/23/20254539 N MASON AVEPortage Park38Completed3 daysMobile DeviceCity 311
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