RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4434 locations in the last 30 days (4612 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

58,010 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/24/2026529 W 44TH PLNew City15Completed11 daysInternetCity 311
3/30/2026529 W 40TH PLNew City11Completed1 dayPhone CallCity 311
10/18/2026529 N MILWAUKEE AVEWest Town27Completed8 daysInternetCity 311
8/10/20255292 N LUNA AVEJefferson Park45Completed12 daysInternetCity 311
5/20/20265292 N LUNA AVEJefferson Park45Completed1 dayInternetCity 311
7/10/20265292 N LUNA AVEJefferson Park45Completed11 daysInternetCity 311
1/11/20265292 N LUNA AVEJefferson Park45Completed1 dayInternetCity 311
6/17/2026528 W SURF STLake View44Completed5 daysInternetCity 311
10/20/2025528 W GRANT PLLincoln Park43Completed1 dayPhone CallCity 311
9/16/2025528 W GRANT PLLincoln Park43Completed10 daysAlderman's OfficeCity 311
7/31/2025528 W GRANT PLLincoln Park43Completed7 daysInternetCity 311
6/29/2026528 W 46TH STNew City15Completed11 daysPhone CallCity 311
7/27/2026528 W 44TH STNew City15Completed8 daysPhone CallCity 311
9/30/2025528 W 28TH STBridgeport11Completed10 daysAlderman's OfficeCity 311
9/5/2025528 N KEDZIE AVEHumboldt Park27Completed12 daysInternetCity 311
4/14/2026528 N HERMITAGE AVEWest Town1Completed1 dayMobile DeviceCity 311
6/13/2026528 N HERMITAGE AVEWest Town1Completed4 daysMobile DeviceCity 311
5/20/2026528 N HERMITAGE AVEWest Town1Completed6 daysMobile DeviceCity 311
9/2/2025528 N HERMITAGE AVEWest Town1Completed8 daysMobile DeviceCity 311
12/8/2025528 E 45TH STGrand Boulevard3Completed1 dayInternetCity 311
6/30/2026528 E 43RD STGrand Boulevard4Completed9 daysInternetCity 311
9/22/2026527 W BARRY AVELake View44Completed10 daysInternetCity 311
8/24/2025527 W 43RD STNew City11Completed10 daysPhone CallCity 311
7/23/2026527 N TROY STHumboldt Park27Completed7 daysMobile DeviceCity 311
3/8/2026527 N TROY STHumboldt Park27Completed3 daysMobile DeviceCity 311
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