RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4235 locations in the last 30 days (4388 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

56,467 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/12/20252120 N SHEFFIELD AVELincoln Park43Completed8 daysInternetCity 311
7/26/20262120 N TRIPP AVEHermosa35Completed5 daysPhone CallCity 311
10/11/20252120 S CANAL STArmour Square11Completed4 daysInternetCity 311
7/31/20252120 W BELMONT AVENorth Center32Completed17 daysInternetCity 311
7/3/20262120 W CORTLAND STLogan Square32Completed6 daysInternetCity 311
5/13/20262120 W GLADYS AVENear West Side27Completed7 daysInternetCity 311
8/2/20252120 W ROSCOE STNorth Center32Completed16 daysInternetCity 311
5/17/20262121 N ALBANY AVELogan Square1Completed4 daysInternetCity 311
9/30/20262121 N ALBANY AVELogan Square1Completed13 daysMobile DeviceCity 311
4/7/20262121 N ALBANY AVELogan Square1Completed1 dayInternetCity 311
2/17/20262121 N CLARKLincoln Park43Completed1 daySalesforce Mobile AppCity 311
10/20/20252121 N CLIFTON AVELincoln Park43Completed3 daysAlderman's OfficeCity 311
10/20/20252121 N CLIFTON AVELincoln Park43Completed3 daysAlderman's OfficeCity 311
8/19/20252121 N CLIFTON AVELincoln Park43Completed14 daysMobile DeviceCity 311
7/31/20252121 N KEYSTONEHermosa35Completed7 daysSalesforce Mobile AppCity 311
8/11/20252121 N LARRABEE STLincoln Park43Completed14 daysPhone CallCity 311
8/20/20252121 N LAVERGNE AVEBelmont Cragin26Completed13 daysMobile DeviceCity 311
5/21/20262121 N MANGO AVEBelmont Cragin36Completed5 daysPhone CallCity 311
8/29/20252121 N NAGLE AVEBelmont Cragin36Completed10 daysInternetCity 311
10/15/20262121N N MARMORA AVEBelmont Cragin36Open—Mobile DeviceCity 311
9/1/20262121 N SEMINARY AVELincoln Park43Completed10 daysInternetCity 311
9/1/20262121 N SEMINARY AVELincoln Park43Completed10 daysPhone CallCity 311
11/21/20252121 N SEMINARY AVELincoln Park43Completed4 daysAlderman's OfficeCity 311
8/6/20252121 S ASHLAND AVELower West Side25Completed9 daysMobile DeviceCity 311
6/22/20262121 S CALIFORNIA AVESouth Lawndale25Completed2 daysInternetCity 311
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