RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4216 locations in the last 30 days (4399 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

59,238 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/15/20264451 S ELLIS AVEKenwood4Completed11 daysInternetCity 311
10/5/20264451 S ELLIS AVEKenwood4Completed8 daysInternetCity 311
10/31/20254451 N SAWYER AVEAlbany Park33Completed4 daysInternetCity 311
6/2/20264451 N SAWYER AVEAlbany Park33Completed1 dayPhone CallCity 311
10/11/20254451 N SAWYER AVEAlbany Park33Completed10 daysMobile DeviceCity 311
7/7/20264451 N ROCKWELL STLincoln Square47Completed9 daysPhone CallCity 311
7/28/20254451 N MALDEN STUptown46Completed7 daysPhone CallCity 311
3/2/20264451 N CLARENDON AVEUptown46Completed1 dayMobile DeviceCity 311
8/31/20264451 N ARTESIAN AVELincoln Square47Completed14 daysAlderman's OfficeCity 311
11/25/20254450 W WEST END AVEWest Garfield Park28Completed1 dayMobile DeviceCity 311
9/11/20254450 W ADAMS STWest Garfield Park28Completed7 daysPhone CallCity 311
10/19/20264450 S WOOD STNew City15Completed10 daysInternetCity 311
1/6/20264450 S KOMENSKY AVEArcher Heights14Completed1 dayPhone CallCity 311
8/26/20254450 N KENTON AVEIrving Park39Completed13 daysAlderman's OfficeCity 311
9/26/20254450 N KASSON AVEAlbany Park39Completed7 daysMobile DeviceCity 311
5/23/20264450 N BERNARD STAlbany Park33Completed4 daysMobile DeviceCity 311
10/11/20264450 N BERNARD STAlbany Park33Completed16 daysMobile DeviceCity 311
9/1/2026444 W ENGLEWOOD AVEEnglewood20Completed1 dayPhone CallCity 311
2/3/2026444 W 72ND STEnglewood6Completed1 dayInternetCity 311
10/23/2025444 W 45TH STNew City15Completed7 daysPhone CallCity 311
8/27/2025444 W 45TH STNew City15Completed13 daysMobile DeviceCity 311
4/9/2026444 W 45TH STNew City15Completed1 dayPhone CallCity 311
9/30/2025444 W 43RD PLNew City11Completed1 dayPhone CallCity 311
10/9/2026444 W 43RD PLNew City11Completed17 daysAlderman's OfficeCity 311
9/25/2026444 W 101ST PLWashington Heights9Completed6 daysPhone CallCity 311
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