RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4332 locations in the last 30 days (4496 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

57,500 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/6/20263016 N HARLEM AVEDunning29Completed2 daysInternetCity 311
5/24/20262320 S HAMLIN AVESouth Lawndale22Completed2 daysInternetCity 311
1/10/20261902 W 17TH STLower West Side25Completed2 daysMobile DeviceCity 311
4/4/20261715 S RACINE AVELower West Side25Completed2 daysInternetCity 311
4/27/20268258 S JUSTINE STAuburn Gresham17Completed2 daysInternetCity 311
11/3/20255043 W WARWICK AVEPortage Park30Completed2 daysInternetCity 311
10/18/2025600 N CLARK STNear North Side42Completed2 daysInternetCity 311
3/6/202610329 S ALBANY AVEMount Greenwood19Completed2 daysInternetCity 311
4/3/20263513 W 59TH STChicago Lawn14Completed2 daysMobile DeviceCity 311
8/24/2026720 E 92ND PLChatham8Completed2 daysMobile DeviceCity 311
3/6/20265901 W ADDISON STPortage Park30Completed2 daysMobile DeviceCity 311
6/15/20261905 N KOSTNER AVEHermosa26Completed2 daysInternetCity 311
10/8/20257723 S STATE STGreater Grand Crossing6Completed2 daysMobile DeviceCity 311
4/12/20262844 W 21ST STSouth Lawndale25Completed2 daysMobile DeviceCity 311
6/15/20266325 N AVERS AVENorth Park39Completed2 daysMobile DeviceCity 311
11/21/20255106 W CARMEN AVEJefferson Park45Completed2 daysPhone CallCity 311
10/6/20251352 N GREENVIEW AVEWest Town1Completed2 daysInternetCity 311
10/4/2026238 E ONTARIO STNear North Side2Completed2 daysMobile DeviceCity 311
1/26/20264126 W 24TH PLSouth Lawndale22Completed2 daysInternetCity 311
11/15/20251038 W OAKDALE AVELake View44Completed2 daysInternetCity 311
1/10/2026128 N LARAMIE AVEAustin37Completed2 daysMobile DeviceCity 311
6/2/20262040 W BELLE PLAINE AVENorth Center47Completed2 daysInternetCity 311
6/26/20263310 W WILSON AVEAlbany Park33Completed2 daysMobile DeviceCity 311
2/21/20261220 E 54TH STHyde Park5Completed2 daysInternetCity 311
11/10/20258259 S ST LAWRENCE AVEChatham6Completed2 daysInternetCity 311
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