RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4331 locations in the last 30 days (4495 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

57,500 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/9/20262409 S WENTWORTH AVEArmour Square11Completed8 daysAlderman's OfficeCity 311
10/9/20262409 S WENTWORTH AVEArmour Square11Completed14 daysAlderman's OfficeCity 311
6/3/20262409 S WENTWORTH AVEArmour Square11Completed2 daysAlderman's OfficeCity 311
4/29/20262409 S WENTWORTH AVEArmour Square11Completed1 dayAlderman's OfficeCity 311
9/4/20262409 S WENTWORTH AVEArmour Square11Completed12 daysAlderman's OfficeCity 311
11/10/20252409 W BALMORAL AVELincoln Square40Completed2 daysInternetCity 311
11/24/20252409 W BALMORAL AVELincoln Square40Completed2 daysInternetCity 311
2/22/20262409 W BALMORAL AVELincoln Square40Completed1 dayInternetCity 311
10/11/20252409 W CATALPA AVELincoln Square40Completed4 daysInternetCity 311
10/26/2025240 W 26TH STArmour Square11Completed2 daysMobile DeviceCity 311
1/13/20262410 E 77TH STSouth Shore7Completed1 dayInternetCity 311
8/25/20252410 S PRINCETON AVEArmour Square11Completed11 daysAlderman's OfficeCity 311
10/6/20252411 E 93RD STCalumet Heights7Completed4 daysPhone CallCity 311
2/11/20262411 N LONG AVEBelmont Cragin31Completed1 dayPhone CallCity 311
2/24/20262411 S CHRISTIANA AVESouth Lawndale25Completed1 dayAlderman's OfficeCity 311
11/6/20252411 S KEDVALE AVESouth Lawndale22Completed6 daysPhone CallCity 311
5/21/20262411 S KEDVALE AVESouth Lawndale22Completed6 daysAlderman's OfficeCity 311
7/23/20262411 S KEDZIE AVESouth Lawndale25Completed5 daysPhone CallCity 311
7/31/20262411 S TROY STSouth Lawndale25Completed11 daysPhone CallCity 311
3/18/20262411 W BALMORAL AVELincoln Square40Completed1 dayInternetCity 311
6/22/20262411 W BELLE PLAINE AVENorth Center47Completed2 daysAlderman's OfficeCity 311
10/13/20262411 W BERWYN AVELincoln Square40Completed9 daysInternetCity 311
3/4/20262411 W FARGO AVEWest Ridge50Completed1 dayInternetCity 311
9/13/20252412 N LOCKWOOD AVEBelmont Cragin31Completed11 daysInternetCity 311
2/22/20262412 N LOCKWOOD AVEBelmont Cragin31Completed2 daysInternetCity 311
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