RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4547 locations in the last 30 days (4694 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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/29/20251049 N RIDGEWAY AVEHumboldt Park27Completed11 daysMobile DeviceCity 311
8/29/20251027 N RIDGEWAY AVEHumboldt Park27Completed11 daysMobile DeviceCity 311
8/18/20255551 S NATCHEZ AVEGarfield Ridge13Completed11 daysInternetCity 311
9/18/20255243 W BERENICE AVEPortage Park30Completed11 daysMobile DeviceCity 311
9/25/20256323 S CALIFORNIA AVEChicago Lawn16Completed11 daysAlderman's OfficeCity 311
9/12/20251412 W 18TH STLower West Side25Completed11 daysAlderman's OfficeCity 311
9/12/20251646 W 18TH STLower West Side25Completed11 daysPhone CallCity 311
9/21/20267944 S INDIANA AVEChatham6Completed11 daysInternetCity 311
8/7/20264344 W HIGHLAND AVEForest Glen39Completed11 daysMobile DeviceCity 311
8/28/2026600 W FULLERTONLincoln Park43Completed11 daysSalesforce Mobile AppCity 311
7/20/20266116 W IRVING PARK RDPortage Park38Completed11 daysPhone CallCity 311
9/12/20251646 W 18TH STLower West Side25Completed11 daysPhone CallCity 311
9/12/20258945 S ESSEX AVECalumet Heights7Completed11 daysPhone CallCity 311
9/18/20251543 N CAMPBELL AVEWest Town1Completed11 daysMobile DeviceCity 311
9/28/20264551 W DEMING PLHermosa31Completed11 daysAlderman's OfficeCity 311
8/23/20262451 N ROCKWELL STLogan Square1Completed11 daysPhone CallCity 311
8/25/2025309 W 25TH PLArmour Square11Completed11 daysPhone CallCity 311
8/7/20252620 W 22ND PLSouth Lawndale25Completed11 daysPhone CallCity 311
8/28/2025736 N WOLCOTT AVEWest Town36Completed11 daysMobile DeviceCity 311
9/11/20263522 N OSCEOLA AVEDunning38Completed11 daysPhone CallCity 311
9/17/20262324 W HURON STWest Town36Completed11 daysInternetCity 311
8/4/20251436 W MONTROSE AVEUptown47Completed11 daysInternetCity 311
8/7/20252627 W CERMAK RDSouth Lawndale25Completed11 daysPhone CallCity 311
8/7/20252624 W 22ND PLSouth Lawndale25Completed11 daysPhone CallCity 311
9/12/20256243 W GRACE STDunning38Completed11 daysAlderman's OfficeCity 311
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