RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4551 locations in the last 30 days (4715 reports) · Last sighting 11 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

57,079 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
12/22/20254574 N MELVINA AVEPortage Park38Completed2 daysInternetCity 311
12/2/20255910 W DAKIN STPortage Park38Completed1 dayPhone CallCity 311
9/28/20253859 N NORDICA AVEDunning38Completed1 dayMobile DeviceCity 311
12/2/20254608 N MELVINA AVEPortage Park38Completed1 dayPhone CallCity 311
8/8/20253743 N NEVA AVEDunning38Completed12 daysMobile DeviceCity 311
9/19/20253859 N NORDICA AVEDunning38Completed10 daysPhone CallCity 311
8/10/20254426 N MULLIGAN AVEPortage Park38Completed10 daysMobile DeviceCity 311
8/4/20253341 N PIONEER AVEDunning38Completed16 daysAlderman's OfficeCity 311
8/27/20263949 N OCONTO AVEDunning38Completed13 daysPhone CallCity 311
12/13/20253328 N NORDICA AVEDunning38Completed2 daysMobile DeviceCity 311
8/8/20253711 N NOTTINGHAM AVEDunning38Completed12 daysMobile DeviceCity 311
8/24/20255654 W BYRON STPortage Park38Completed10 daysInternetCity 311
8/30/20267153 W IRVING PARK RDDunning38Completed12 daysMobile DeviceCity 311
8/14/20254510 N MULLIGAN AVEPortage Park38Completed6 daysInternetCity 311
9/19/20253901 N NORDICA AVEDunning38Completed10 daysPhone CallCity 311
8/30/20263523 N NOTTINGHAM AVEDunning38Completed12 daysInternetCity 311
8/5/20258259 W IRVING PARK RDDunning38Completed14 daysInternetCity 311
8/5/20258255 W IRVING PARK RDDunning38Completed14 daysInternetCity 311
6/30/20265713 W PATTERSON AVEPortage Park38Completed9 daysMobile DeviceCity 311
8/8/20253458 N NORMANDY AVEDunning38Completed12 daysAlderman's OfficeCity 311
12/2/20253222 N NEENAH AVEDunning38Completed1 dayPhone CallCity 311
8/8/20253457 N NORMANDY AVEDunning38Completed12 daysAlderman's OfficeCity 311
1/7/20263704 N SAYRE AVEDunning38Completed0 daysPhone CallCity 311
9/8/20263301 N PLAINFIELD AVEDunning38Completed8 daysInternetCity 311
8/17/20254208 N MONITOR AVEPortage Park38Completed9 daysInternetCity 311
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