RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4349 locations in the last 30 days (4512 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

57,594 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/2/20251747 W 38TH STMcKinley Park12Completed9 daysInternetCity 311
9/28/20267211 W SUMMERDALE AVENorwood Park41Completed9 daysInternetCity 311
9/15/20256330 N KILDARE AVEForest Glen39Completed9 daysAlderman's OfficeCity 311
8/25/20262928 S THROOP STBridgeport11Completed9 daysPhone CallCity 311
7/21/2026739 N RIDGEWAY AVEHumboldt Park27Completed9 daysPhone CallCity 311
7/21/2026144 N BELL AVENear West Side27Completed9 daysInternetCity 311
7/29/20257451 W FOREST PRESERVE AVEDunning38Completed9 daysAlderman's OfficeCity 311
7/21/20264919 W NEWPORT AVEPortage Park31Completed9 daysAlderman's OfficeCity 311
7/13/20265300 W SCHOOL STPortage Park31Completed9 daysAlderman's OfficeCity 311
7/8/20261100 W WELLINGTON AVELake View44Completed9 daysPhone CallCity 311
9/16/20252339 N KARLOV AVEHermosa35Completed9 daysMobile DeviceCity 311
6/15/20268240 W BELMONT AVEDunning38Completed9 daysPhone CallCity 311
8/30/20261618 S BLUE ISLAND AVELower West Side25Completed9 daysPhone CallCity 311
10/6/20251434 N HARDING AVEHumboldt Park26Completed9 daysMobile DeviceCity 311
9/3/2025422 N CENTRAL PARK BLVDHumboldt Park27Completed9 daysInternetCity 311
7/21/2026145 N BELL AVENear West Side27Completed9 daysInternetCity 311
8/17/20263838 W 109TH PLMount Greenwood19Completed9 daysInternetCity 311
7/12/20266600 S RACINE AVEWest Englewood17Completed9 daysPhone CallCity 311
9/22/20251743 W CHASE AVERogers Park49Completed9 daysPhone CallCity 311
10/1/2025901 N HARDING AVEHumboldt Park37Completed9 daysInternetCity 311
7/15/20261508 W LUNT AVERogers Park49Completed9 daysInternetCity 311
7/21/20265645 W 63RD PLClearing13Completed9 daysInternetCity 311
7/28/20253308 N SEELEY AVENorth Center32Completed9 daysInternetCity 311
6/29/202610128 S CHARLES STBeverly19Completed9 daysAlderman's OfficeCity 311
8/6/20251158 W CULLERTON STLower West Side25Completed9 daysPhone CallCity 311
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