RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4486 locations in the last 30 days (4653 reports) · Last sighting yesterday

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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.

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

52,821 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
2/6/2026924 W 31ST PLBridgeport11Completed3 daysInternetCity 311
3/23/2026924 W 31ST PLBridgeport11Completed1 dayInternetCity 311
10/10/2025924 W 31ST PLBridgeport11Completed5 daysInternetCity 311
8/28/2025924 E 44TH STKenwood4Completed12 daysMobile DeviceCity 311
4/9/20269248 S MAY STWashington Heights21Completed1 dayPhone CallCity 311
5/23/20269248 S COTTAGE GROVE AVEChatham8Completed4 daysPhone CallCity 311
8/27/20259247 S PRAIRIE AVERoseland6Completed13 daysPhone CallCity 311
10/21/20259245 S ADA STWashington Heights21Completed7 daysInternetCity 311
4/16/20269244 S DUNBAR AVERoseland6Completed1 dayMobile DeviceCity 311
7/29/20269243 S DOBSON AVEBurnside8Completed1 dayPhone CallCity 311
7/20/20269241 S DOBSON AVEBurnside8Completed7 daysAlderman's OfficeCity 311
9/8/20269240 S LAFAYETTE AVERoseland9Completed3 daysPhone CallCity 311
12/26/20259240 S KINGSTON AVECalumet Heights7Completed3 daysMobile DeviceCity 311
11/19/2025923 W 32ND STBridgeport11Completed1 dayPhone CallCity 311
10/15/2025923 N WINCHESTER AVEWest Town36Completed2 daysMobile DeviceCity 311
7/8/2026923 N RIDGEWAY AVEHumboldt Park27Completed9 daysPhone CallCity 311
6/14/2026923 N HONORE STWest Town36Completed1 dayInternetCity 311
7/29/2025923 N ASHLAND AVEWest Town1Completed8 daysInternetCity 311
9/17/2026923 N ASHLAND AVEWest Town1Open—InternetCity 311
11/9/20259239 S CALUMET AVERoseland6Completed3 daysMobile DeviceCity 311
3/11/20269239 S CALUMET AVERoseland6Completed2 daysInternetCity 311
11/17/20259239 S BISHOP STWashington Heights21Completed1 dayPhone CallCity 311
8/20/20259238 S EGGLESTON AVEWashington Heights9Completed9 daysPhone CallCity 311
9/4/20259238 S EGGLESTON AVEWashington Heights9Completed13 daysPhone CallCity 311
5/20/20269237 S UNION AVEWashington Heights21Completed1 dayPhone CallCity 311
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