RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4396 locations in the last 30 days (4559 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

56,705 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/7/20256021 S MASON AVEClearing13Completed8 daysMobile DeviceCity 311
10/7/20253738 N HARLEM AVEDunning38Completed10 daysMobile DeviceCity 311
10/7/20253153 S UNION AVEBridgeport11Completed3 daysInternetCity 311
10/7/20251900 S CARPENTER STLower West Side25Completed3 daysPhone CallCity 311
10/7/20254014 N MEADE AVEPortage Park38Completed10 daysInternetCity 311
10/7/20251900 S CARPENTER STLower West Side25Completed9 daysPhone CallCity 311
10/7/20253743 N SPAULDING AVEIrving Park33Completed1 dayInternetCity 311
10/7/20254172 W EDDY STIrving Park30Completed9 daysMobile DeviceCity 311
10/7/20254546 S WOOD STNew City15Completed10 daysMobile DeviceCity 311
10/7/20257424 N WINCHESTER AVERogers Park49Completed7 daysPhone CallCity 311
10/7/20256239 W BERENICE AVEDunning38Completed10 daysPhone CallCity 311
10/7/20255340 W MELROSE STPortage Park31Completed8 daysMobile DeviceCity 311
10/7/20255133 W WRIGHTWOOD AVEBelmont Cragin31Completed9 daysPhone CallCity 311
10/7/2025610 W BRIAR PLLake View44Completed7 daysMobile DeviceCity 311
10/7/20252214 N BURLING STLincoln Park43Completed7 daysInternetCity 311
10/7/202511300 S FORRESTVILLE AVEPullman9Completed8 daysInternetCity 311
10/7/20252815 W LUNT AVEWest Ridge50Completed13 daysMobile DeviceCity 311
10/7/20252404 N KILBOURN AVEHermosa31Completed13 daysInternetCity 311
10/7/20252313 W 51ST STGage Park15Completed10 daysInternetCity 311
10/7/20254833 W SUPERIOR STAustin37Completed1 dayPhone CallCity 311
10/7/20252333 N MELVINA AVEBelmont Cragin36Completed8 daysInternetCity 311
10/7/20252866 N MILWAUKEE AVEAvondale35Completed12 daysInternetCity 311
10/7/20254455 N BROADWAYUptown46Completed7 daysMobile DeviceCity 311
10/7/20252038 W MOFFAT STLogan Square32Completed7 daysInternetCity 311
10/7/20257358 N DAMEN AVERogers Park49Completed7 daysMobile DeviceCity 311
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