RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4538 locations in the last 30 days (4711 reports) · Last sighting 10 hours ago

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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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/4/20262332 W CHICAGO AVEWest Town36Completed4 daysMobile DeviceCity 311
6/10/20262223 N MAJOR AVEBelmont Cragin36Completed6 daysInternetCity 311
10/11/2025941 N DAMEN AVEWest Town36Completed5 daysMobile DeviceCity 311
6/4/20262346 W RICE STWest Town36Completed4 daysMobile DeviceCity 311
10/10/2025828 N CALIFORNIA AVEWest Town36Completed6 daysMobile DeviceCity 311
7/18/20264627 W ARMITAGE AVEBelmont Cragin36Completed11 daysMobile DeviceCity 311
6/15/20262629 W HADDON AVEWest Town36Completed7 daysMobile DeviceCity 311
6/18/20262627 W HADDON AVEWest Town36Completed4 daysInternetCity 311
1/12/20262249 W IOWA STWest Town36Completed1 dayMobile DeviceCity 311
2/11/20262343 W RICE STWest Town36Completed1 dayMobile DeviceCity 311
2/11/20262019 W OHIO STWest Town36Completed1 dayPhone CallCity 311
6/17/2026853 N FRANCISCO AVEWest Town36Completed5 daysInternetCity 311
1/7/2026864 N FRANCISCO AVEWest Town36Completed2 daysPhone CallCity 311
5/22/2026735 N WOOD STWest Town36Completed6 daysInternetCity 311
5/21/20263339 N NAGLE AVEDunning36Completed1 dayPhone CallCity 311
5/21/20262135 N MULLIGAN AVEBelmont Cragin36Completed1 dayPhone CallCity 311
2/11/2026829 N WESTERN AVEWest Town36Completed1 dayMobile DeviceCity 311
10/8/20252436 W CORTEZ STWest Town36Completed7 daysPhone CallCity 311
6/3/20263109 N NAGLE AVEBelmont Cragin36Completed5 daysPhone CallCity 311
7/18/20262332 W AUGUSTA BLVDWest Town36Completed11 daysInternetCity 311
6/1/20261432 N KEDVALE AVEHumboldt Park36Completed4 daysPhone CallCity 311
6/16/20262341 N MELVINA AVEBelmont Cragin36Completed6 daysMobile DeviceCity 311
9/19/20252323 N MERRIMAC AVEBelmont Cragin36Completed12 daysPhone CallCity 311
5/20/20263035 N NATCHEZ AVEBelmont Cragin36Completed6 daysInternetCity 311
1/16/20261117 N CENTRAL PARK AVEHumboldt Park36Completed5 daysPhone CallCity 311
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