RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4468 locations in the last 30 days (4628 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/8/20268407 S OGLESBY AVESouth Chicago8Completed9 daysPhone CallCity 311
5/1/20268407 S MUSKEGON AVESouth Chicago10Completed3 daysWalk-inCity 311
6/15/20268407 S MARSHFIELD AVEAuburn Gresham18Completed1 dayPhone CallCity 311
6/25/20268407 S MARSHFIELD AVEAuburn Gresham18Completed6 daysPhone CallCity 311
4/16/20268407 S DORCHESTER AVEAvalon Park8Completed4 daysMobile DeviceCity 311
7/15/20268407 S DAMEN AVEAuburn Gresham18Completed13 daysPhone CallCity 311
11/8/20258407 S BURNHAM AVESouth Chicago7Completed2 daysInternetCity 311
7/21/20268406 S MAY STAuburn Gresham17Completed10 daysPhone CallCity 311
9/2/20268405 S KARLOV AVEAshburn18Completed12 daysPhone CallCity 311
8/26/20258403 S MACKINAW AVESouth Chicago10Completed14 daysAlderman's OfficeCity 311
4/2/20268401 S OGLESBY AVESouth Chicago8Completed4 daysPhone CallCity 311
9/12/20268401 S MUSKEGON AVESouth Chicago10Completed11 daysInternetCity 311
8/26/20258401 S BRANDON AVESouth Chicago10Completed14 daysAlderman's OfficeCity 311
8/15/20258400 S PEORIA STAuburn Gresham17Completed7 daysInternetCity 311
11/17/20258400 S OGLESBY AVESouth Chicago8Completed1 dayInternetCity 311
6/10/20268400 S MANISTEE AVESouth Chicago7Completed1 dayPhone CallCity 311
8/30/20268400 S HERMITAGE AVEAuburn Gresham18Completed5 daysPhone CallCity 311
9/4/20258400 S BURNHAM AVESouth Chicago7Completed12 daysPhone CallCity 311
8/26/20258400 S BUFFALO AVESouth Chicago10Completed14 daysAlderman's OfficeCity 311
5/4/20268400 S BRANDON AVESouth Chicago10Completed1 dayPhone CallCity 311
8/31/2025839 W NEWPORT AVELake View44Completed9 daysMobile DeviceCity 311
10/5/2025839 W NEWPORT AVELake View44Completed4 daysMobile DeviceCity 311
9/17/2025839 W NEWPORT AVELake View44Completed12 daysMobile DeviceCity 311
3/10/2026839 W LILL AVELincoln Park43Completed2 daysMobile DeviceCity 311
1/23/2026839 W LILL AVELincoln Park43Completed5 daysInternetCity 311
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