RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4273 locations in the last 30 days (4460 reports) · Last sighting 14 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

59,882 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/19/20253154 S EMERALD AVEBridgeport11Completed10 daysAlderman's OfficeCity 311
5/14/20263154 N HUDSON AVELake View44Completed4 daysPhone CallCity 311
11/30/20253153 W FRANKLIN BLVDHumboldt Park27Completed1 dayPhone CallCity 311
9/25/20263153 W FRANKLIN BLVDHumboldt Park27Completed11 daysPhone CallCity 311
10/26/20263153 S WELLS STArmour Square11Completed4 daysPhone CallCity 311
8/27/20253153 S UNION AVEBridgeport11Completed13 daysInternetCity 311
10/7/20253153 S UNION AVEBridgeport11Completed3 daysInternetCity 311
5/24/20263152 S CANAL STBridgeport11Completed3 daysInternetCity 311
5/20/20263152 N RIDGEWAY AVEAvondale35Completed7 daysInternetCity 311
9/6/20263152 N PINE GROVE AVELake View44Completed15 daysMobile DeviceCity 311
8/1/20263152 N PINE GROVE AVELake View44Completed6 daysMobile DeviceCity 311
5/29/20263152 N CAMBRIDGE AVELake View44Completed5 daysMobile DeviceCity 311
5/4/20263151 W HARRISON STEast Garfield Park24Completed1 dayMobile DeviceCity 311
9/24/20263151 W ARGYLE STAlbany Park33Completed13 daysMobile DeviceCity 311
10/5/20253151 W ARGYLE STAlbany Park33Completed9 daysMobile DeviceCity 311
9/3/20253151 W ARGYLE STAlbany Park33Completed2 daysInternetCity 311
8/26/20253151 W ARGYLE STAlbany Park33Completed13 daysMobile DeviceCity 311
1/5/20263151 N HONORE STNorth Center32Completed1 dayInternetCity 311
5/21/20263150 W CULLOM AVEIrving Park33Completed6 daysInternetCity 311
10/1/20263150 W BRYN MAWR AVENorth Park39Completed8 daysMobile DeviceCity 311
9/26/20263150 W BRYN MAWR AVENorth Park39Completed13 daysInternetCity 311
10/26/20263150 S UNION AVEBridgeport11Completed4 daysMobile DeviceCity 311
10/15/20263150 S UNION AVEBridgeport11Completed13 daysInternetCity 311
10/14/20253150 S EMERALD AVEBridgeport11Completed7 daysAlderman's OfficeCity 311
9/4/20263150 N SHEFFIELD AVELake View44Completed12 daysMobile DeviceCity 311
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