RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4381 locations in the last 30 days (4542 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

53,243 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/23/20258218 S TROY STAshburn18Completed10 daysMobile DeviceCity 311
2/23/20268218 S MICHIGAN AVEChatham6Completed2 daysInternetCity 311
4/7/20268218 S HERMITAGE AVEAuburn Gresham17Completed1 dayInternetCity 311
2/16/20268217 S MICHIGAN AVEChatham6Completed1 dayInternetCity 311
4/24/20268216 S EMERALD AVEAuburn Gresham6Completed3 daysInternetCity 311
7/31/20258216 S DAMEN AVEAuburn Gresham18Completed7 daysAlderman's OfficeCity 311
10/26/20258215 S PEORIA STAuburn Gresham17Completed2 daysInternetCity 311
8/20/20268215 S MARYLAND AVEChatham8Completed4 daysMobile DeviceCity 311
7/27/20268215 S MARYLAND AVEChatham8Completed7 daysMobile DeviceCity 311
9/22/20268215 S GREEN STAuburn Gresham17Open—InternetCity 311
9/10/20258214 S TROY STAshburn18Completed13 daysAlderman's OfficeCity 311
6/10/20268214 S AVALON AVEAvalon Park8Completed2 daysInternetCity 311
6/18/20268213 S MARSHFIELD AVEAuburn Gresham17Completed6 daysPhone CallCity 311
8/1/20258213 S MARSHFIELD AVEAuburn Gresham17Completed10 daysPhone CallCity 311
9/30/20258213 S MARSHFIELD AVEAuburn Gresham17Completed8 daysPhone CallCity 311
1/6/20268213 S MARSHFIELD AVEAuburn Gresham17Completed1 dayPhone CallCity 311
9/22/20258211 S THROOP STAuburn Gresham17Completed8 daysPhone CallCity 311
9/23/20258211 S MARSHFIELD AVEAuburn Gresham17Completed7 daysAlderman's OfficeCity 311
3/6/20268211 S MARSHFIELD AVEAuburn Gresham17Completed5 daysPhone CallCity 311
7/26/20268210 W BELMONT AVEDunning38Completed16 daysPhone CallCity 311
4/1/20268210 S EXCHANGE AVESouth Chicago7Completed1 dayMobile DeviceCity 311
7/20/2026820 W BUCKINGHAM PLLake View44Completed9 daysInternetCity 311
8/27/2026820 W BUCKINGHAM PLLake View44Completed15 daysInternetCity 311
4/15/2026820 W BELMONT AVELake View44Completed1 dayInternetCity 311
12/18/2025820 W BELLE PLAINE AVEUptown46Completed1 dayPhone CallCity 311
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