RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4418 locations in the last 30 days (4579 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

57,251 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/11/20252255 W WALTON STWest Town36Completed5 daysMobile DeviceCity 311
8/20/20262256 N LOREL AVEBelmont Cragin36Completed13 daysMobile DeviceCity 311
8/22/20262256 N SAWYER AVELogan Square35Completed2 daysMobile DeviceCity 311
1/26/20262256 S KOSTNER AVENorth Lawndale22Completed2 daysInternetCity 311
8/18/20262256 W IRVING PARK RDNorth Center47Completed10 daysPhone CallCity 311
11/21/20252256 W MONROE STNear West Side27Completed3 daysMobile DeviceCity 311
11/3/20252256 W MONROE STNear West Side27Completed2 daysMobile DeviceCity 311
6/29/20262256 W WARREN BLVDNear West Side27Completed7 daysPhone CallCity 311
6/23/20262257 N JANSSEN AVELincoln Park2Completed3 daysMobile DeviceCity 311
8/24/20252257 N LONG AVEBelmont Cragin36Completed10 daysInternetCity 311
4/28/20262257 N LONG AVEBelmont Cragin36Completed2 daysInternetCity 311
8/25/20252257 S ALBANY AVESouth Lawndale24Completed3 daysPhone CallCity 311
8/20/20262257 S SACRAMENTO AVESouth Lawndale24Completed13 daysMobile DeviceCity 311
9/4/20262257 S WENTWORTH AVEArmour Square11Completed12 daysAlderman's OfficeCity 311
10/9/20262257 S WENTWORTH AVEArmour Square11Open—Alderman's OfficeCity 311
4/29/20262257 S WENTWORTH AVEArmour Square11Completed2 daysAlderman's OfficeCity 311
6/3/20262257 S WENTWORTH AVEArmour Square11Completed2 daysAlderman's OfficeCity 311
7/9/20262257 S WENTWORTH AVEArmour Square11Completed6 daysAlderman's OfficeCity 311
10/21/20252257 W FULLERTON AVELogan Square32Completed7 daysInternetCity 311
11/13/20252257 W FULLERTON AVELogan Square32Completed1 dayInternetCity 311
10/21/20262257 W LAKE STNear West Side27Open—InternetCity 311
2/28/20262258 N MANGO AVEBelmont Cragin36Completed3 daysMobile DeviceCity 311
9/18/20262258 N MANGO AVEBelmont Cragin36Completed13 daysPhone CallCity 311
9/2/20252258 N MANGO AVEBelmont Cragin36Completed10 daysMobile DeviceCity 311
5/20/20262258 S MARSHALL BLVDSouth Lawndale24Completed2 daysPhone CallCity 311
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