RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4422 locations in the last 30 days (4583 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

56,907 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/2/20264536 N MULLIGAN AVEPortage Park38Completed16 daysMobile DeviceCity 311
9/6/20264821 W NEWPORT AVEPortage Park31Completed12 daysMobile DeviceCity 311
9/23/20264913 W DAKIN STPortage Park45Completed12 daysMobile DeviceCity 311
9/6/20264807 W NEWPORT AVEPortage Park31Completed12 daysMobile DeviceCity 311
8/4/20255223 W ADDISON STPortage Park31Completed11 daysMobile DeviceCity 311
8/31/20265657 W GUNNISONPortage Park45Completed14 daysSalesforce Mobile AppCity 311
7/16/20265327 W WARNER AVEPortage Park38Completed15 daysPhone CallCity 311
10/2/20265541 W HUTCHINSON STPortage Park38Completed3 daysPhone CallCity 311
8/2/20263752 N CENTRAL AVEPortage Park38Completed16 daysMobile DeviceCity 311
8/2/20265700 W SCHOOL STPortage Park30Completed10 daysPhone CallCity 311
8/2/20265828 W HENDERSON STPortage Park30Completed10 daysInternetCity 311
9/22/20265653 W GUNNISON STPortage Park45Completed13 daysInternetCity 311
8/10/20264440 N MERRIMAC AVEPortage Park38Completed14 daysMobile DeviceCity 311
7/31/20255100 W DAKIN STPortage Park45Completed6 daysAlderman's OfficeCity 311
8/3/20254918 W ROSCOE STPortage Park31Completed12 daysMobile DeviceCity 311
10/5/20265242 W MONTROSE AVEPortage Park45Completed15 daysMobile DeviceCity 311
7/31/20255100 W BYRON STPortage Park45Completed6 daysAlderman's OfficeCity 311
9/22/20264141 N LONG AVEPortage Park38Completed13 daysPhone CallCity 311
9/21/20264047 N MELVINA AVEPortage Park38Completed14 daysPhone CallCity 311
9/14/20265649 W PATTERSON AVEPortage Park38Completed11 daysMobile DeviceCity 311
10/12/20265510 W BERTEAU AVEPortage Park38Open—Mobile DeviceCity 311
9/1/20265229 W NEWPORT AVEPortage Park31Completed13 daysInternetCity 311
8/30/20265224 W ROSCOE STPortage Park31Completed15 daysInternetCity 311
8/10/20264431 N MERRIMAC AVEPortage Park38Completed14 daysAlderman's OfficeCity 311
9/22/20264021 N MELVINA AVEPortage Park38Completed13 daysPhone CallCity 311
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