RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4607 locations in the last 30 days (4760 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

54,983 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/11/20261618 N SAWYER AVEHumboldt Park26Completed10 daysInternetCity 311
6/2/20261618 N WHIPPLE STHumboldt Park26Completed3 daysMobile DeviceCity 311
12/9/20251618 N WHIPPLE STHumboldt Park26Completed1 dayMobile DeviceCity 311
5/5/20261618 S ALLPORT STLower West Side25Completed1 dayInternetCity 311
8/30/20261618 S BLUE ISLAND AVELower West Side25Completed9 daysPhone CallCity 311
8/1/20261618 S BLUE ISLAND AVELower West Side25Completed10 daysPhone CallCity 311
10/5/20261618 S CARPENTER STLower West Side25Open—Phone CallCity 311
9/18/20251618 S JEFFERSON STLower West Side25Completed4 daysMobile DeviceCity 311
7/29/20251618 S KARLOV AVENorth Lawndale24Completed7 daysAlderman's OfficeCity 311
10/25/20251618 S LOOMIS STLower West Side25Completed5 daysMobile DeviceCity 311
8/27/20261618 S LOOMIS STLower West Side25Completed12 daysMobile DeviceCity 311
9/19/20251618 S WASHTENAW AVENorth Lawndale24Completed6 daysInternetCity 311
11/6/20251618 W 18TH STLower West Side25Completed6 daysPhone CallCity 311
1/7/20261618 W EDGEWATER AVEEdgewater40Completed0 daysMobile DeviceCity 311
8/17/20261619 N BELL AVEWest Town32Completed14 daysInternetCity 311
2/25/20261619 N BELL AVEWest Town32Completed1 dayInternetCity 311
9/23/20251619 N DAMEN AVEWest Town32Completed9 daysPhone CallCity 311
7/15/20261619 N HUMBOLDTWest Town26Completed13 daysPhone CallCity 311
9/30/20261619 N HUMBOLDT BLVDWest Town26Open—Alderman's OfficeCity 311
5/8/20261619 N KIMBALL AVEHumboldt Park26Completed3 daysInternetCity 311
7/5/20261619 N LINDER AVEAustin37Completed9 daysMobile DeviceCity 311
8/26/20251619 N TALMAN AVEWest Town26Completed10 daysPhone CallCity 311
9/16/20261619 N TALMAN AVEWest Town26Completed12 daysPhone CallCity 311
6/5/20261619 S CENTRAL PARK AVENorth Lawndale24Completed5 daysPhone CallCity 311
8/2/20251619 W HIGHLAND AVEEdgewater40Completed10 daysMobile DeviceCity 311
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