RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4536 locations in the last 30 days (4699 reports) · Last sighting 15 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.

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.

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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/28/20258546 S CHAPPEL AVEAvalon Park8Completed1 dayPhone CallCity 311
10/24/20258545 W BRYN MAWR AVEO'Hare41Completed5 daysInternetCity 311
8/13/20268545 S OGLESBY AVESouth Chicago8Completed14 daysPhone CallCity 311
1/13/20268545 S OGLESBY AVESouth Chicago8Completed1 dayAlderman's OfficeCity 311
4/13/20268545 S OGLESBY AVESouth Chicago8Completed1 dayAlderman's OfficeCity 311
9/15/20258545 S OGLESBY AVESouth Chicago8Completed10 daysAlderman's OfficeCity 311
7/6/20268545 S OGLESBY AVESouth Chicago8Completed8 daysPhone CallCity 311
6/24/20268545 S ESSEX AVESouth Chicago7Completed2 daysPhone CallCity 311
8/18/20268544 S MACKINAW AVESouth Chicago10Completed15 daysPhone CallCity 311
2/9/20268543 W BRYN MAWR AVEO'Hare41Completed1 dayInternetCity 311
4/7/20268543 S MORGAN STAuburn Gresham17Completed1 dayPhone CallCity 311
3/26/20268543 S BUFFALO AVESouth Chicago10Completed1 dayPhone CallCity 311
7/9/20268541 S RHODES AVEChatham6Completed6 daysInternetCity 311
8/1/20258541 S KOMENSKY AVEAshburn18Completed10 daysInternetCity 311
8/27/20258541 S KOMENSKY AVEAshburn18Completed1 dayPhone CallCity 311
8/26/20268541 S ADA STAuburn Gresham17Completed9 daysPhone CallCity 311
3/30/20268540 S JEFFERY AVEAvalon Park8Completed2 daysAlderman's OfficeCity 311
5/6/20268540 S EUCLID AVEAvalon Park8Completed2 daysInternetCity 311
9/21/20268540 S EUCLID AVEAvalon Park8Open—InternetCity 311
2/13/2026853 W LELAND AVEUptown46Completed3 daysInternetCity 311
12/1/2025853 W LAWRENCE AVEUptown46Completed1 dayPhone CallCity 311
7/8/2026853 W GRACE STLake View46Completed5 daysInternetCity 311
6/16/2026853 W GRACE STLake View46Completed7 daysInternetCity 311
1/15/2026853 W GEORGE STLake View44Completed0 daysMobile DeviceCity 311
5/8/2026853 W 49TH PLNew City20Completed4 daysInternetCity 311
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