RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4541 locations in the last 30 days (4688 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

55,547 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/21/20264919 N LESTER AVEJefferson Park45Completed11 daysInternetCity 311
7/13/20265705 W NEWPORT AVEPortage Park30Completed11 daysPhone CallCity 311
8/25/20256359 W HUNTINGTON STNorwood Park39Completed11 daysAlderman's OfficeCity 311
9/4/20263539 W 12TH PLNorth Lawndale24Completed11 daysInternetCity 311
7/18/20262512 N RACINE AVELincoln Park32Completed11 daysMobile DeviceCity 311
7/18/20261212 W ALTGELD STLincoln Park32Completed11 daysMobile DeviceCity 311
8/14/20262716 W RASCHER AVELincoln Square40Completed11 daysMobile DeviceCity 311
9/14/20251442 W FLETCHER STLake View32Completed11 daysInternetCity 311
8/7/20263834 W 83RD STAshburn18Completed11 daysMobile DeviceCity 311
9/6/20251721 N DAYTON STLincoln Park43Completed11 daysInternetCity 311
9/12/20253830 N CLARK STLake View44Completed11 daysPhone CallCity 311
8/16/20264957 N CHRISTIANA AVEAlbany Park33Completed11 daysMobile DeviceCity 311
9/12/20253161 N HALSTED STLake View44Completed11 daysInternetCity 311
9/21/20264928 N WHIPPLE STAlbany Park33Completed11 daysAlderman's OfficeCity 311
8/15/20253836 W FLOURNOY STWest Garfield Park24Completed11 daysAlderman's OfficeCity 311
10/3/20257033 S ARTESIAN AVEChicago Lawn17Completed11 daysPhone CallCity 311
8/15/20252196 N ELSTON AVELogan Square32Completed11 daysInternetCity 311
8/17/20268052 S SACRAMENTO AVEAshburn18Completed11 daysPhone CallCity 311
7/10/20264401 S HALSTED STNew City15Completed11 daysPhone CallCity 311
8/11/20257010 W FOSTER AVENorwood Park41Completed11 daysPhone CallCity 311
8/10/20262641 W GREGORY STLincoln Square40Completed11 daysInternetCity 311
9/11/20251535 W BARRY AVELake View32Completed11 daysMobile DeviceCity 311
8/29/20256155 S NASHVILLE AVEClearing13Completed11 daysAlderman's OfficeCity 311
8/30/20265746 N ODELL AVENorwood Park41Completed11 daysMobile DeviceCity 311
9/7/202510040 S LOWE AVEWashington Heights21Completed11 daysPhone CallCity 311
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