RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4422 locations in the last 30 days (4583 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

57,251 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/20/20254152 N MENARD AVEPortage Park38Completed7 daysMobile DeviceCity 311
10/4/20255702 W WILSON AVEPortage Park38Completed12 daysInternetCity 311
10/15/20254822 W NEWPORT AVEPortage Park31Completed7 daysPhone CallCity 311
6/18/20265717 W CORNELIA AVEPortage Park30Completed6 daysInternetCity 311
1/9/20264551 N MOODY AVEPortage Park38Completed3 daysPhone CallCity 311
6/4/20265150 W BERTEAU AVEPortage Park38Completed4 daysInternetCity 311
6/12/20265718 W GIDDINGS STPortage Park45Completed3 daysPhone CallCity 311
10/14/20256100 W IRVING PARK RDPortage Park38Completed8 daysPhone CallCity 311
9/3/20255635 W MONTROSE AVEPortage Park38Completed12 daysAlderman's OfficeCity 311
5/12/20265944 W GIDDINGS STPortage Park45Completed3 daysMobile DeviceCity 311
1/21/20264715 W CORNELIA AVEPortage Park30Completed1 dayInternetCity 311
6/4/20265937 W PATTERSON AVEPortage Park38Completed4 daysMobile DeviceCity 311
6/15/20265158 W SCHOOL STPortage Park31Completed3 daysInternetCity 311
5/13/20265705 W NEWPORT AVEPortage Park30Completed2 daysMobile DeviceCity 311
10/13/20255654 W GIDDINGS STPortage Park45Completed7 daysInternetCity 311
6/18/20265639 W PATTERSON AVEPortage Park38Completed6 daysInternetCity 311
6/17/20265145 W SCHOOL STPortage Park31Completed1 dayPhone CallCity 311
6/18/20265758 W NEWPORT AVEPortage Park30Completed4 daysMobile DeviceCity 311
6/15/20265126 W DAKIN STPortage Park45Completed8 daysInternetCity 311
6/2/20265248 W MELROSE STPortage Park31Completed6 daysMobile DeviceCity 311
6/18/20265545 W ADDISON STPortage Park30Completed6 daysPhone CallCity 311
6/22/20265511 W EDDY STPortage Park30Completed1 dayPhone CallCity 311
10/4/20255134 W DAKIN STPortage Park45Completed11 daysMobile DeviceCity 311
2/13/20264510 N MULLIGAN AVEPortage Park38Completed3 daysInternetCity 311
6/15/20265330 W GRACE STPortage Park30Completed3 daysMobile DeviceCity 311
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