RatCity — Chicago Rat and Rodent Sightings Map

RatCity

79 locations in the last day (83 reports) · Last sighting 19 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.

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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

59,712 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/7/20261059 N CENTRAL PARK AVEHumboldt Park27Completed14 daysInternetCity 311
8/7/20265115 W PATTERSON AVEPortage Park30Completed13 daysPhone CallCity 311
8/7/20261807 N LINCOLN PARK WESTLincoln Park43Completed14 daysMobile DeviceCity 311
8/7/20268814 S CARPENTER STAuburn Gresham21Completed10 daysPhone CallCity 311
8/7/20264733 N SAWYER AVEAlbany Park33Completed13 daysInternetCity 311
8/7/20262435 W GUNNISON STLincoln Square40Completed13 daysMobile DeviceCity 311
8/7/20264751 S SPRINGFIELD AVEArcher Heights14Completed7 daysMobile DeviceCity 311
8/7/20268908 S UNION AVEAuburn Gresham21Completed10 daysInternetCity 311
8/7/20264928 N TRIPP AVEAlbany Park39Completed10 daysInternetCity 311
8/7/20262141 W ARMITAGE AVELogan Square32Completed3 daysInternetCity 311
8/7/20266245 N CICERO AVEForest Glen39Completed11 daysAlderman's OfficeCity 311
8/7/20266043 S HERMITAGE AVEWest Englewood15Completed14 daysPhone CallCity 311
8/7/20263035 S LAWNDALE AVESouth Lawndale22Completed6 daysMobile DeviceCity 311
8/7/20263000 S WELLS STArmour Square11Completed7 daysAlderman's OfficeCity 311
8/7/20263005 S PRINCETON AVEArmour Square11Completed11 daysAlderman's OfficeCity 311
8/7/20263003 S PRINCETON AVEArmour Square11Completed11 daysAlderman's OfficeCity 311
8/7/20263001 S PRINCETON AVEArmour Square11Completed11 daysPhone CallCity 311
8/7/20261621 N SEDGWICK STLincoln Park2Completed3 daysInternetCity 311
8/7/20265900 W ROOSEVELT RDAustin29Completed7 daysPhone CallCity 311
8/7/20261938 N SHEFFIELD AVELincoln Park43Completed14 daysInternetCity 311
8/7/20261007 S MASON AVEAustin29Completed7 daysPhone CallCity 311
8/7/20265800 W HENDERSON STPortage Park30Completed13 daysAlderman's OfficeCity 311
8/7/20261025 S MAYFIELD AVEAustin29Completed7 daysPhone CallCity 311
8/7/20265800 W ROOSEVELT RDAustin29Completed7 daysPhone CallCity 311
8/7/20262831 S SHORT STBridgeport11Completed7 daysAlderman's OfficeCity 311
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