RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4587 locations in the last 30 days (4735 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

55,547 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/29/20254929 S HERMITAGE AVENew City20Completed12 daysInternetCity 311
12/29/20251634 W GARFIELD BLVDNew City16Completed1 dayInternetCity 311
8/29/20254849 S PAULINA STNew City20Completed12 daysInternetCity 311
8/16/2025605 W 46TH STNew City15Completed5 daysMobile DeviceCity 311
7/17/20264610 S WOOD STNew City15Completed3 daysPhone CallCity 311
9/24/2025539 W 45TH PLNew City15Completed7 daysMobile DeviceCity 311
4/30/20265402 S WOLCOTT AVENew City16Completed4 daysAlderman's OfficeCity 311
8/15/20254206 S UNION AVENew City11Completed10 daysMobile DeviceCity 311
9/2/20251255 W 51ST STNew City20Completed8 daysPhone CallCity 311
9/26/2025719 W 50TH STNew City20Completed7 daysPhone CallCity 311
9/3/20254436 S LOWE AVENew City15Completed7 daysPhone CallCity 311
10/6/20254714 S DAMEN AVENew City15Completed3 daysAlderman's OfficeCity 311
10/6/20254334 S HERMITAGE AVENew City15Completed3 daysPhone CallCity 311
8/18/2025539 W 43RD STNew City11Completed8 daysPhone CallCity 311
9/30/20254302 S HONORE STNew City15Completed1 dayPhone CallCity 311
8/19/20251850 W 45TH STNew City15Completed7 daysAlderman's OfficeCity 311
7/14/20265440 S LOOMIS STNew City20Completed3 daysPhone CallCity 311
7/10/2026730 W 50TH PLNew City20Completed7 daysPhone CallCity 311
8/19/20254510 S PAULINA STNew City15Completed6 daysInternetCity 311
12/30/20254336 S WOOD STNew City15Completed3 daysInternetCity 311
8/18/20254424 S UNION AVENew City15Completed7 daysPhone CallCity 311
8/17/2025626 W 47TH PLNew City15Completed8 daysPhone CallCity 311
10/3/20254531 S ASHLAND AVENew City15Completed5 daysAlderman's OfficeCity 311
12/31/2025540 W 43RD PLNew City11Completed2 daysInternetCity 311
9/24/2025605 W 46TH STNew City15Completed7 daysMobile DeviceCity 311
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