RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4332 locations in the last 30 days (4496 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

57,500 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/4/20252378 N ELSTON AVELogan Square32Completed10 daysInternetCity 311
8/17/20262378 N ELSTON CTLogan Square32Completed14 daysInternetCity 311
10/28/2025237 N ABERDEEN STNear West Side27Completed2 daysInternetCity 311
4/6/2026237 W 109TH PLRoseland9Completed1 dayPhone CallCity 311
5/27/2026237 W 109TH PLRoseland9Completed2 daysPhone CallCity 311
7/9/2026237 W 109TH PLRoseland9Completed12 daysPhone CallCity 311
8/31/2025237 W 109TH PLRoseland9Completed10 daysPhone CallCity 311
10/4/2026238 E ONTARIO STNear North Side2Completed2 daysMobile DeviceCity 311
10/18/2025238 W 19TH STArmour Square11Completed6 daysMobile DeviceCity 311
6/3/2026238 W 22ND PLArmour Square11Completed1 dayAlderman's OfficeCity 311
7/9/2026238 W 22ND PLArmour Square11Completed6 daysAlderman's OfficeCity 311
10/9/2026238 W 22ND PLArmour Square11Completed14 daysAlderman's OfficeCity 311
4/29/2026238 W 22ND PLArmour Square11Completed1 dayAlderman's OfficeCity 311
8/12/2026238 W 22ND PLArmour Square11Completed13 daysAlderman's OfficeCity 311
9/2/2026238 W 22ND PLArmour Square11Completed13 daysAlderman's OfficeCity 311
8/31/2025238 W 28TH PLArmour Square11Completed11 daysPhone CallCity 311
4/16/20262392 N MILWAUKEE AVELogan Square1Completed1 dayInternetCity 311
10/30/20252392 N MILWAUKEE AVELogan Square1Completed5 daysInternetCity 311
9/10/20262398 N ELSTON AVELogan Square32Completed11 daysPhone CallCity 311
9/2/2026239 W 22ND PLArmour Square11Completed13 daysAlderman's OfficeCity 311
6/3/2026239 W 22ND PLArmour Square11Completed1 dayAlderman's OfficeCity 311
10/9/2026239 W 22ND PLArmour Square11Completed14 daysAlderman's OfficeCity 311
4/29/2026239 W 22ND PLArmour Square11Completed1 dayAlderman's OfficeCity 311
8/28/2025239 W 95TH STRoseland9Completed13 daysInternetCity 311
5/13/202623 E 113TH PLRoseland9Completed1 dayPhone CallCity 311
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