RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4544 locations in the last 30 days (4698 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

53,761 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/13/2026124 N MOZART STEast Garfield Park27Completed3 daysPhone CallCity 311
9/22/2026124 N MOZART STEast Garfield Park27Open—Phone CallCity 311
11/3/2025124 N MOZART STEast Garfield Park27Completed1 dayPhone CallCity 311
7/20/2026124 N MOZART STEast Garfield Park27Completed10 daysPhone CallCity 311
11/14/2025124 W POLK STLoop34Completed4 daysPhone CallCity 311
7/21/202612503 S UNION AVEWest Pullman9Completed6 daysMobile DeviceCity 311
4/20/202612508 S LOWE AVEWest Pullman9Completed1 dayPhone CallCity 311
4/27/202612509 S STEWART AVEWest Pullman9Completed1 dayAlderman's OfficeCity 311
7/27/20261250 N MAPLEWOOD AVEWest Town26Completed8 daysPhone CallCity 311
4/6/20261250 N MAPLEWOOD AVEWest Town26Completed1 dayMobile DeviceCity 311
10/27/20251250 N MAYFIELD AVEAustin29Completed2 daysInternetCity 311
5/27/20261250 S BLUE ISLAND AVENear West Side28Completed7 daysInternetCity 311
7/17/20261250 S HOMAN AVENorth Lawndale24Completed10 daysPhone CallCity 311
5/12/20261250 S INDIANA AVENear South Side34Completed3 daysMobile DeviceCity 311
8/4/20261250 S KARLOV AVENorth Lawndale24Completed6 daysAlderman's OfficeCity 311
11/27/20251250 S MICHIGAN AVENear South Side34Completed6 daysMobile DeviceCity 311
11/2/20251250 W GRACE STLake View44Completed3 daysInternetCity 311
8/11/20251250 W NEWPORT AVELake View44Completed11 daysInternetCity 311
9/12/202512515 S HARVARD AVEWest Pullman9Completed6 daysMobile DeviceCity 311
6/26/202612516 S UNION AVEWest Pullman9Completed4 days—City 311
3/23/202612516 S UNION AVEWest Pullman9Completed1 dayInternetCity 311
3/26/202612516 S UNION AVEWest Pullman9Completed1 dayPhone CallCity 311
3/25/202612516 S UNION AVEWest Pullman9Completed1 dayPhone CallCity 311
2/13/20261251 N PAULINA STWest Town1Completed2 daysMobile DeviceCity 311
5/3/20261251 N SPRINGFIELD AVEHumboldt Park36Completed3 daysMobile DeviceCity 311
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