RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4280 locations in the last 30 days (4462 reports) · Last sighting 19 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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/21/20262531 W HOWARD STWest Ridge50Completed3 daysPhone CallCity 311
6/9/20265401 S HARLEM AVEGarfield Ridge23Completed3 daysPhone CallCity 311
12/26/20254030 N CLARENDON AVEUptown46Completed3 daysInternetCity 311
10/6/20254334 S HERMITAGE AVENew City15Completed3 daysPhone CallCity 311
4/10/20263224 N OSAGE AVEDunning38Completed3 daysPhone CallCity 311
1/23/20264401 S CAMPBELL AVEBrighton Park15Completed3 daysPhone CallCity 311
11/21/202512456 S PRINCETON AVEWest Pullman9Completed3 daysPhone CallCity 311
1/23/20265001 S MAPLEWOOD AVEGage Park15Completed3 daysPhone CallCity 311
11/7/20253708 N HARLEM AVEDunning38Completed3 daysPhone CallCity 311
5/12/20268620 S MARYLAND AVEChatham8Completed3 daysAlderman's OfficeCity 311
6/8/20264536 N MERRIMAC AVEPortage Park38Completed3 daysPhone CallCity 311
6/22/202611340 S MILLARD AVEMount Greenwood19Completed3 daysAlderman's OfficeCity 311
5/2/20264717 N ALBANY AVEAlbany Park33Completed3 daysInternetCity 311
3/29/2026730 W SHERIDAN RDLake View46Completed3 daysMobile DeviceCity 311
5/29/20263045 N HAMLIN AVEAvondale31Completed3 daysPhone CallCity 311
11/28/20257029 W HENDERSON STDunning38Completed3 daysPhone CallCity 311
8/17/20264124 S ARTESIAN AVEBrighton Park12Completed3 daysMobile DeviceCity 311
11/15/2025630 N MAY STWest Town27Completed3 daysPhone CallCity 311
6/8/20261747 N PULASKI RDHumboldt Park26Completed3 daysInternetCity 311
6/8/20265826 N FOREST GLEN AVEForest Glen39Completed3 daysPhone CallCity 311
9/19/20252802 N WOLCOTT AVENorth Center32Completed3 daysPhone CallCity 311
3/2/202611550 S CHURCH STMorgan Park19Completed3 daysInternetCity 311
1/17/20261030 N WOOD STWest Town1Completed3 daysInternetCity 311
1/23/20262500 W 46TH STBrighton Park15Completed3 daysPhone CallCity 311
6/8/20265434 N KIMBALL AVENorth Park39Completed3 daysPhone CallCity 311
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