RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4531 locations in the last 30 days (4686 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

54,257 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/5/2025713 S LOOMIS STNear West Side34Completed2 daysPhone CallCity 311
4/9/2026713 S LOOMIS STNear West Side34Completed1 dayPhone CallCity 311
12/1/2025713 S LOOMIS STNear West Side34Completed2 daysPhone CallCity 311
9/16/2025713 N CHRISTIANA AVEHumboldt Park27Completed13 daysPhone CallCity 311
10/16/20257139 W HIGGINS AVENorwood Park41Completed7 daysPhone CallCity 311
4/19/20267139 W 63RD PLClearing13Completed1 dayInternetCity 311
8/8/20267139 S SAWYER AVEChicago Lawn17Completed6 daysPhone CallCity 311
9/24/20257139 S HARDING AVEWest Lawn23Completed8 daysAlderman's OfficeCity 311
9/23/20257139 S HARDING AVEWest Lawn23Completed9 daysAlderman's OfficeCity 311
9/2/20257139 S HARDING AVEWest Lawn23Completed13 daysPhone CallCity 311
9/2/20257139 S HARDING AVEWest Lawn23Completed13 daysPhone CallCity 311
2/26/20267139 S EGGLESTON AVEEnglewood6Completed1 dayPhone CallCity 311
4/16/20267138 W 64TH PLClearing13Completed1 dayAlderman's OfficeCity 311
5/4/20267138 W 64TH PLClearing13Completed2 daysInternetCity 311
5/21/20267138 S EUCLID AVESouth Shore5Completed5 daysPhone CallCity 311
8/5/20267138 S AVERS AVEWest Lawn23Completed9 daysPhone CallCity 311
10/24/20257138 S AVERS AVEWest Lawn23Completed3 daysPhone CallCity 311
7/22/20267138 S AVERS AVEWest Lawn23Completed9 daysAlderman's OfficeCity 311
8/13/20267137 W SUMMERDALE AVENorwood Park41Completed13 daysPhone CallCity 311
8/26/20257137 W SUMMERDALE AVENorwood Park41Completed10 daysAlderman's OfficeCity 311
9/23/20267137 S VERNON AVEGreater Grand Crossing6Open—Mobile DeviceCity 311
9/25/20257137 S MAY STEnglewood17Completed11 daysPhone CallCity 311
9/17/20267137 S DR MARTIN LUTHER KING JR DRGreater Grand Crossing6Completed13 daysPhone CallCity 311
8/24/20267137 S DR MARTIN LUTHER KING JR DRGreater Grand Crossing6Completed8 daysInternetCity 311
10/7/20257136 S PEORIA STEnglewood17Completed13 daysAlderman's OfficeCity 311
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