RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4489 locations in the last 30 days (4638 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

54,350 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/20/20255652 W GRAND AVEBelmont Cragin36Completed9 daysInternetCity 311
8/20/20253710 W 60TH PLWest Lawn23Completed9 daysMobile DeviceCity 311
8/20/20253130 N ODELL AVEDunning29Completed7 daysInternetCity 311
8/20/20253113 N KOLMAR AVEHermosa31Completed13 daysAlderman's OfficeCity 311
8/20/20253124 N KILBOURN AVEHermosa31Completed13 daysAlderman's OfficeCity 311
8/20/20253141 N KILBOURN AVEHermosa31Completed13 daysAlderman's OfficeCity 311
8/20/20253112 N KENNETH AVEHermosa31Completed9 daysAlderman's OfficeCity 311
8/20/20253130 N KENNETH AVEHermosa31Completed9 daysAlderman's OfficeCity 311
8/20/20253510 N NARRAGANSETT AVEDunning38Completed8 daysMobile DeviceCity 311
8/20/20251931 N RICHMOND STLogan Square26Completed15 daysMobile DeviceCity 311
8/20/20251800 S STATE STNear South Side3Completed7 daysInternetCity 311
8/20/20256012 S ROCKWELL STChicago Lawn16Completed13 daysAlderman's OfficeCity 311
8/20/20257643 W RASCHER AVENorwood Park41Completed8 daysAlderman's OfficeCity 311
8/20/20259635 S SANGAMON STWashington Heights21Completed9 daysPhone CallCity 311
8/20/20256215 W CATALPA AVEJefferson Park45Completed14 daysPhone CallCity 311
8/20/20256218 W RASCHER AVEJefferson Park45Completed14 daysPhone CallCity 311
8/20/20251528 S TRIPP AVENorth Lawndale24Completed7 daysAlderman's OfficeCity 311
8/20/20257659 W RASCHER AVENorwood Park41Completed8 daysPhone CallCity 311
8/20/202510800 S UNION AVERoseland21Completed9 daysInternetCity 311
8/20/20252620 W POTOMAC AVEWest Town26Completed15 daysMobile DeviceCity 311
8/20/20252151 W WASHINGTON BLVDNear West Side27Completed9 daysPhone CallCity 311
8/20/20251210 W LEXINGTON STNear West Side34Completed1 dayInternetCity 311
8/20/20254908 W BELDEN AVEBelmont Cragin31Completed15 daysAlderman's OfficeCity 311
8/20/20256942 S CALUMET AVEGreater Grand Crossing6Completed6 daysMobile DeviceCity 311
8/20/20254534 N MEADE AVEPortage Park38Completed8 daysAlderman's OfficeCity 311
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