RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4790 locations in the last 30 days (4949 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.

32080fewer → more

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

55,179 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/20/20262817 W 40TH STBrighton Park12Completed1 dayPhone CallCity 311
10/21/20256006 N MARMORA AVEJefferson Park39Completed1 dayPhone CallCity 311
1/15/20266464 N CLARK STRogers Park40Completed1 dayInternetCity 311
3/11/20263938 W 111TH STMount Greenwood19Completed1 dayAlderman's OfficeCity 311
3/16/20266334 N MOBILE AVENorwood Park39Completed1 dayAlderman's OfficeCity 311
5/28/20261938 N MOHAWK STLincoln Park43Completed1 dayAlderman's OfficeCity 311
3/26/20261800 N KOSTNER AVEHermosa26Completed1 dayPhone CallCity 311
2/2/20261473 W 114TH PLMorgan Park21Completed1 dayInternetCity 311
12/11/20251320 N KEDZIE AVEHumboldt Park26Completed1 dayPhone CallCity 311
6/2/2026639 W 26TH STBridgeport11Completed1 dayInternetCity 311
8/13/20251508 N WIELAND STNear North Side2Completed1 dayPhone CallCity 311
4/2/20267047 S CALIFORNIA AVEChicago Lawn17Completed1 dayPhone CallCity 311
11/3/20256430 S LAMON AVEClearing13Completed1 dayInternetCity 311
6/8/20263348 W VAN BUREN STEast Garfield Park28Completed1 dayPhone CallCity 311
4/22/20264514 N WOLCOTT AVELincoln Square47Completed1 dayInternetCity 311
12/8/20253201 W ARMITAGE AVELogan Square26Completed1 dayPhone CallCity 311
8/19/20266031 N AUSTIN AVEJefferson Park39Completed1 dayInternetCity 311
11/20/20252810 W 55TH STGage Park14Completed1 dayAlderman's OfficeCity 311
11/18/20252701 W SHERWIN AVEWest Ridge50Completed1 dayPhone CallCity 311
4/27/20264601 S HARDING AVEArcher Heights14Completed1 dayMobile DeviceCity 311
11/3/20257958 S RIDGELAND AVESouth Chicago8Completed1 dayInternetCity 311
2/18/20265901 S TALMAN AVEChicago Lawn16Completed1 dayPhone CallCity 311
10/15/2025822 N CALIFORNIA AVEWest Town36Completed1 dayPhone CallCity 311
4/21/20264748 S PRAIRIE AVEGrand Boulevard3Completed1 dayPhone CallCity 311
1/27/20265732 S KENWOOD AVEHyde Park5Completed1 dayInternetCity 311
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