RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4414 locations in the last 30 days (4568 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

56,073 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/30/20268563 W WINONA STO'Hare41Completed20 daysMobile DeviceCity 311
7/30/20262025 E 93RD STCalumet Heights7Completed11 daysMobile DeviceCity 311
7/30/20261835 S CARPENTER STLower West Side25Completed12 daysMobile DeviceCity 311
7/30/20264030 W 58TH PLWest Elsdon13Completed13 daysPhone CallCity 311
7/30/20261842 W BYRON STNorth Center47Completed12 daysMobile DeviceCity 311
7/30/20262322 W PETERSON AVEWest Ridge40Completed13 daysMobile DeviceCity 311
7/30/20261300 N HARDING AVEHumboldt Park36Completed18 daysPhone CallCity 311
7/30/20261200 N HARDING AVEHumboldt Park37Completed6 daysPhone CallCity 311
7/30/202611108 S GREEN STMorgan Park21Completed15 daysPhone CallCity 311
7/30/20262541 W 109TH STMorgan Park19Completed11 daysInternetCity 311
7/30/20264743 S AVERS AVEArcher Heights14Completed6 daysPhone CallCity 311
7/30/2026610 W BRIAR PLLake View44Completed13 daysMobile DeviceCity 311
7/30/20264020 S DREXEL AVEOakland4Completed6 daysPhone CallCity 311
7/30/20261812 S RIDGEWAY AVENorth Lawndale24Completed5 daysPhone CallCity 311
7/30/20262451 N GREENVIEW AVELincoln Park32Completed13 daysMobile DeviceCity 311
7/30/20264842 S KEATING AVEGarfield Ridge22Completed12 daysPhone CallCity 311
7/30/2026715 W 50TH STNew City20Completed11 daysPhone CallCity 311
7/30/2026139 E 107TH STRoseland9Completed6 daysPhone CallCity 311
7/30/2026215 E 107TH STRoseland9Completed6 daysPhone CallCity 311
7/30/20261954 S FAIRFIELD AVESouth Lawndale25Completed12 daysPhone CallCity 311
7/30/20265020 N MELVINA AVEJefferson Park45Completed15 daysAlderman's OfficeCity 311
7/30/20265960 W 60TH STClearing13Completed14 daysInternetCity 311
7/30/20266377 N PAULINA STEdgewater40Completed19 daysPhone CallCity 311
7/30/20261928 W BERENICE AVENorth Center47Completed12 daysMobile DeviceCity 311
7/30/20261150 W OHIO STWest Town27Completed13 daysMobile DeviceCity 311
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