RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4363 locations in the last 30 days (4545 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

58,313 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/9/202526 E 91ST STChatham6Completed9 daysPhone CallCity 311
8/12/202526 W CHESTNUT STNear North Side42Completed2 daysInternetCity 311
11/2/202526 W CHESTNUT STNear North Side42Completed1 dayMobile DeviceCity 311
5/12/202626 W CHESTNUT STNear North Side42Completed1 dayInternetCity 311
5/18/202626 W CHESTNUT STNear North Side42Completed2 daysMobile DeviceCity 311
11/19/20252700 E 76TH STSouth Shore7Completed2 daysPhone CallCity 311
11/7/20252700 N HARDINGLogan Square35Completed3 daysSalesforce Mobile AppCity 311
11/5/20252700 N HARDING AVELogan Square35Completed1 dayAlderman's OfficeCity 311
9/29/20252700 N MCVICKER AVEBelmont Cragin30Completed2 daysInternetCity 311
10/29/20262700 N MULLIGAN AVEBelmont Cragin36Open—Phone CallCity 311
9/24/20262700 N MULLIGAN AVEBelmont Cragin36Completed13 daysPhone CallCity 311
9/2/20262700 N MULLIGAN AVEBelmont Cragin36Completed12 daysAlderman's OfficeCity 311
3/27/20262700 N NEVA AVEMontclare29Completed3 daysPhone CallCity 311
7/9/20262700 N NEVA AVEMontclare29Completed5 daysAlderman's OfficeCity 311
1/6/20262700 N NEVA AVEMontclare29Completed1 dayMobile DeviceCity 311
8/28/20252700 N SHEFFIELD AVELincoln Park43Completed13 daysInternetCity 311
9/30/20252700 N SHEFFIELD AVELincoln Park43Completed8 daysInternetCity 311
3/3/20262700 N ST LOUIS AVELogan Square35Completed2 daysAlderman's OfficeCity 311
8/18/20262700 N WAYNE AVELincoln Park32Completed15 daysMobile DeviceCity 311
6/5/20262700 S AVERS AVESouth Lawndale22Completed5 daysAlderman's OfficeCity 311
5/14/20262700 S AVERS AVESouth Lawndale22Completed4 daysAlderman's OfficeCity 311
10/6/20262700 S DRAKE AVESouth Lawndale22Completed14 daysPhone CallCity 311
2/25/20262700 S PRINCETON AVEArmour Square11Completed1 dayInternetCity 311
7/15/20262700 S PRINCETON AVEArmour Square11Completed9 daysInternetCity 311
1/10/20262700 S PRINCETON AVEArmour Square11Completed2 daysInternetCity 311
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