RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4588 locations in the last 30 days (4757 reports) · Last sighting 12 hours ago

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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
8/4/20259544 S WENTWORTH AVERoseland9Completed11 daysPhone CallCity 311
9/24/20259542 S UNIVERSITY AVEPullman8Completed5 daysAlderman's OfficeCity 311
9/24/20259542 S UNIVERSITY AVEPullman8Completed5 daysAlderman's OfficeCity 311
10/21/20259541 S LASALLE STRoseland9Completed3 daysPhone CallCity 311
8/25/20259540 S PERRY AVERoseland9Completed9 daysPhone CallCity 311
8/30/2026953 W WEBSTER AVELincoln Park43Completed12 daysInternetCity 311
5/18/2026953 W IRVING PARK RDLake View46Completed2 daysInternetCity 311
1/29/2026953 W DIVERSEYLincoln Park43Completed1 daySalesforce Mobile AppCity 311
9/15/2026953 N AVERS AVEHumboldt Park27Open—Phone CallCity 311
3/2/20269539 S WENTWORTH AVERoseland9Completed2 daysPhone CallCity 311
8/7/20269539 S EXCHANGE AVESouth Deering10Completed6 daysPhone CallCity 311
8/18/20259538 S AVALON AVEPullman8Completed8 daysInternetCity 311
3/16/20269537 S WENTWORTHRoseland9Completed2 daysSalesforce Mobile AppCity 311
7/26/20259533 S PERRY AVERoseland9Completed10 daysMobile DeviceCity 311
3/31/20269533 S PERRY AVERoseland9Completed0 daysMobile DeviceCity 311
11/28/20259531 S UNIVERSITY AVEPullman8Completed4 daysMobile DeviceCity 311
5/8/20269531 S UNIVERSITY AVEPullman8Completed4 daysMobile DeviceCity 311
5/18/20269531 S PERRY AVERoseland9Completed2 daysMobile DeviceCity 311
8/9/20269531 S PERRY AVERoseland9Completed9 daysMobile DeviceCity 311
8/23/2025952 W DICKENS AVELincoln Park43Completed10 daysInternetCity 311
2/13/2026952 W ARMITAGELincoln Park43Completed3 daysSalesforce Mobile AppCity 311
8/17/2025952 W 53RD STNew City20Completed10 daysMobile DeviceCity 311
3/12/2026952 W 37TH STBridgeport11Completed4 daysMobile DeviceCity 311
1/22/2026952 W 37TH STBridgeport11Completed1 dayMobile DeviceCity 311
2/26/2026952 W 37TH STBridgeport11Completed1 dayMobile DeviceCity 311
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