RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4381 locations in the last 30 days (4542 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.

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

53,243 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/4/202611309 S BISHOP STMorgan Park21Completed3 daysMobile DeviceCity 311
11/3/202511309 S BISHOP STMorgan Park21Completed4 daysInternetCity 311
8/21/202611309 S CENTRAL PARK AVEMount Greenwood19Completed5 daysInternetCity 311
8/13/202611309 S LANGLEY AVEPullman9Completed13 daysPhone CallCity 311
10/7/20251130 N RIDGEWAY AVEHumboldt Park27Completed13 daysPhone CallCity 311
6/15/20261130 N RIDGEWAY AVEHumboldt Park27Completed3 daysPhone CallCity 311
8/27/20261130 N SPRINGFIELD AVEHumboldt Park37Completed14 daysPhone CallCity 311
6/7/20261130 S CANAL STNear West Side28Completed1 dayInternetCity 311
10/13/20251130 S COLUMBUS DRLoop4Completed7 daysInternetCity 311
10/2/20251130 S COLUMBUS DRLoop4Completed6 daysInternetCity 311
3/26/20241130 S MICHIGAN AVELoop4Completed1 dayMobile DeviceCity 311
3/27/20261130 S SACRAMENTO AVENorth Lawndale28Completed3 daysPhone CallCity 311
2/18/20261130 W 36TH STBridgeport11Completed0 daysInternetCity 311
10/2/20251130 W DIVERSEY PKWYLake View44Completed7 daysInternetCity 311
10/12/20251130 W DIVERSEY PKWYLake View44Completed10 daysInternetCity 311
9/15/20251130 W DIVERSEY PKWYLake View44Completed8 daysInternetCity 311
8/7/20261130 W MORSE AVERogers Park49Completed12 daysAlderman's OfficeCity 311
6/15/20261130 W OAKDALE AVELake View44Completed2 daysMobile DeviceCity 311
8/15/20251130 W WILSON AVEUptown46Completed11 daysInternetCity 311
8/21/202611310 S CENTRAL PARK AVEMount Greenwood19Completed4 daysInternetCity 311
6/18/202611310 S RIDGEWAY AVEMount Greenwood19Completed4 daysInternetCity 311
8/21/202611311 S CENTRAL PARK AVEMount Greenwood19Completed5 daysPhone CallCity 311
8/28/202611311 S CHURCH STMorgan Park19Completed7 daysInternetCity 311
7/27/202511311 S EMERALD AVERoseland21Completed9 daysInternetCity 311
7/13/202611311 S HAMLIN AVEMount Greenwood19Completed8 daysInternetCity 311
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