RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4504 locations in the last 30 days (4667 reports) · Last sighting 14 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

57,079 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/9/20265829 W LAWRENCE AVEPortage Park45Open—Phone CallCity 311
8/12/20255727 W MELROSE STPortage Park30Completed3 daysPhone CallCity 311
10/10/20263500 N KILPATRICK AVEPortage Park30Open—Alderman's OfficeCity 311
10/10/20263400 N KILPATRICK AVEPortage Park30Open—Alderman's OfficeCity 311
10/10/20263400 N KNOX AVEPortage Park30Open—Phone CallCity 311
10/5/20264116 N MENARD AVEPortage Park38Open—Phone CallCity 311
7/31/20255104 W MELROSE STPortage Park31Completed12 daysAlderman's OfficeCity 311
7/27/20265309 W ADDISON STPortage Park30Completed9 daysMobile DeviceCity 311
9/22/20264021 N MELVINA AVEPortage Park38Completed13 daysPhone CallCity 311
9/14/20265415 W WAVELAND AVEPortage Park30Completed14 daysMobile DeviceCity 311
7/25/20263319 N CICERO AVEPortage Park30Completed11 daysMobile DeviceCity 311
9/21/20264047 N MELVINA AVEPortage Park38Completed14 daysPhone CallCity 311
7/28/20263415 N LARAMIE AVEPortage Park31Completed10 daysMobile DeviceCity 311
9/14/20263609 N AUSTIN AVEPortage Park38Completed1 dayPhone CallCity 311
7/27/20264910 W NEWPORT AVEPortage Park31Completed11 daysPhone CallCity 311
7/27/20264910 W NEWPORT AVEPortage Park31Completed11 daysPhone CallCity 311
9/14/20265746 W WAVELAND AVEPortage Park38Completed1 dayPhone CallCity 311
9/22/20264141 N LONG AVEPortage Park38Completed13 daysPhone CallCity 311
7/21/20265011 W BYRON STPortage Park30Completed9 daysPhone CallCity 311
9/16/20265146 W HUTCHINSON STPortage Park45Completed15 daysMobile DeviceCity 311
9/14/20265637 W CORNELIA AVEPortage Park30Completed1 dayPhone CallCity 311
7/21/20264056 N MENARD AVEPortage Park38Completed14 daysPhone CallCity 311
7/20/20265316 W BELLE PLAINE AVEPortage Park38Completed15 daysPhone CallCity 311
7/21/20265140 W HUTCHINSON STPortage Park45Completed14 daysInternetCity 311
9/21/20264345 N MONITOR AVEPortage Park38Completed14 daysMobile DeviceCity 311
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