RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4476 locations in the last 30 days (4637 reports) · Last sighting 22 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/27/2026846 N LAWNDALE AVEHumboldt Park27Completed4 daysPhone CallCity 311
9/29/2025846 N LAWNDALE AVEHumboldt Park27Completed7 daysPhone CallCity 311
9/1/2026846 N CALIFORNIA AVEWest Town36Completed9 daysInternetCity 311
3/2/2026846 N CALIFORNIA AVEWest Town36Completed1 dayInternetCity 311
7/25/2025845 W NEWPORT AVELake View44Completed11 daysMobile DeviceCity 311
8/18/2025845 W NEWPORT AVELake View44Completed15 daysMobile DeviceCity 311
8/17/2026845 W NEWPORT AVELake View44Completed10 daysInternetCity 311
5/4/2026845 W ADDISON STLake View44Completed2 daysMobile DeviceCity 311
9/1/2025845 N MOZART STWest Town36Completed11 daysMobile DeviceCity 311
8/1/2025845 N MONTICELLO AVEHumboldt Park27Completed10 daysMobile DeviceCity 311
7/17/2026845 N AVERS AVEHumboldt Park27Completed6 daysPhone CallCity 311
8/25/2026845 E DREXEL SQUARE DRHyde Park20Completed9 daysInternetCity 311
9/6/2026845 E DREXEL SQUARE DRHyde Park20Completed4 daysInternetCity 311
7/11/2026845 E 52ND STHyde Park20Completed6 daysMobile DeviceCity 311
8/10/20258457 S ABERDEEN STAuburn Gresham17Completed5 daysPhone CallCity 311
3/11/20268456 S RHODES AVEChatham6Completed2 daysMobile DeviceCity 311
11/18/20258455 S KEDVALE AVEAshburn18Completed1 dayAlderman's OfficeCity 311
3/10/20268454 S BENNETT AVEAvalon Park8Completed1 dayPhone CallCity 311
11/14/20258453 W GREGORY STO'Hare41Completed4 daysInternetCity 311
9/2/20258453 S MANISTEE AVESouth Chicago7Completed9 daysAlderman's OfficeCity 311
9/17/20258452 S MANISTEE AVESouth Chicago7Completed12 daysPhone CallCity 311
6/4/20268451 S KEDZIE AVEAshburn18Completed4 daysAlderman's OfficeCity 311
10/28/20258451 S ESSEX AVESouth Chicago7Completed2 daysPhone CallCity 311
9/25/20258451 S ESSEX AVESouth Chicago7Completed4 daysAlderman's OfficeCity 311
6/22/20268451 S BURNHAM AVESouth Chicago7Completed2 daysPhone CallCity 311
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