RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4547 locations in the last 30 days (4694 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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/10/20264431 N MERRIMAC AVEPortage Park38Completed14 daysAlderman's OfficeCity 311
8/10/20264435 N MERRIMAC AVEPortage Park38Completed14 daysInternetCity 311
8/10/20266524 S INGLESIDE AVEWoodlawn20Completed7 daysPhone CallCity 311
8/10/20262917 N RICHMOND STAvondale35Completed15 daysMobile DeviceCity 311
8/10/20268002 S PRINCETON AVEChatham6Completed9 daysAlderman's OfficeCity 311
8/10/20261934 S RACINE AVELower West Side25Completed3 daysPhone CallCity 311
8/10/20267400 S PAXTON AVESouth Shore7Completed9 daysPhone CallCity 311
8/10/20261641 W ADDISON STLake View47Completed8 daysAlderman's OfficeCity 311
8/10/2026360 W ILLINOIS STNear North Side42Completed2 daysMobile DeviceCity 311
8/10/20266244 S NATOMA AVEClearing13Completed8 daysPhone CallCity 311
8/10/20261641 W ADDISON STLake View47Completed8 daysPhone CallCity 311
8/10/20264131 N FRANCISCO AVEIrving Park33Completed14 daysInternetCity 311
8/10/20264304 N CAMPBELL AVENorth Center47Completed15 daysPhone CallCity 311
8/10/20262914 N NASHVILLE AVEMontclare36Completed15 daysInternetCity 311
8/10/20269559 S LEAVITT STBeverly19Completed4 daysPhone CallCity 311
8/10/20263739 N NEWLAND AVEDunning38Completed16 daysAlderman's OfficeCity 311
8/10/20263655 W DIVISION STHumboldt Park36Completed15 daysInternetCity 311
8/10/20262317 N RIDGEWAY AVELogan Square35Completed14 daysInternetCity 311
8/10/20262315 N RIDGEWAY AVELogan Square35Completed14 daysInternetCity 311
8/10/20262041 W HOMER STLogan Square32Completed14 daysPhone CallCity 311
8/10/20266054 W EDDY STDunning30Completed11 daysMobile DeviceCity 311
8/10/2026940 N OAKLEY BLVDWest Town36Completed10 daysInternetCity 311
8/10/20263353 W 79TH STAshburn18Completed8 daysMobile DeviceCity 311
8/10/20269908 S LAFAYETTE AVERoseland9Completed8 daysPhone CallCity 311
8/10/20264354 W MARQUETTE RDWest Lawn13Completed8 daysPhone CallCity 311
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