RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4334 locations in the last 30 days (4493 reports) · Last sighting 2 days 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

1,215 reports match your filters.

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DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/18/20266119 N MASON AVEJefferson Park39Open—InternetCity 311
9/18/2026401 W BELDEN AVELincoln Park43Completed3 daysInternetCity 311
9/18/20263019 S PRINCETON AVEArmour Square11Open—Phone CallCity 311
9/18/20263822 W 83RD STAshburn18Open—Mobile DeviceCity 311
9/18/20265629 W MADISONAustin29Open—Salesforce Mobile AppCity 311
9/18/20266220 S PARKSIDE AVEClearing13Open—Mobile DeviceCity 311
9/18/20264517 N CLAREMONT AVELincoln Square47Open—Phone CallCity 311
9/18/20266609 S CALIFORNIA AVEChicago Lawn16Open—InternetCity 311
9/18/20261528 N CLEVELAND AVENear North Side2Open—Mobile DeviceCity 311
9/18/20267431 N DAMEN AVERogers Park49Open—Phone CallCity 311
9/18/20264167 S BERKELEY AVEOakland4Open—InternetCity 311
9/18/20269957 S CAMPBELL AVEBeverly19Open—Phone CallCity 311
9/18/2026824 W WEBSTER AVELincoln Park43Open—InternetCity 311
9/18/20262061 W JARVIS AVERogers Park49Open—Phone CallCity 311
9/18/20262247 N SPAULDING AVELogan Square35Open—Phone CallCity 311
9/18/20264336 W PARKER AVEHermosa31Open—Alderman's OfficeCity 311
9/18/20266183 N CALDWELL AVEForest Glen39Open—Phone CallCity 311
9/18/20264448 S ALBANY AVEBrighton Park12Open—Mobile DeviceCity 311
9/18/2026854 N OAKLEY BLVDWest Town36Open—InternetCity 311
9/18/20265541 W HIGGINS AVEJefferson Park45Open—Mobile DeviceCity 311
9/18/20263054 N RACINE AVELake View32Open—Phone CallCity 311
9/18/202611100 S INDIANA AVERoseland9Open—Phone CallCity 311
9/18/20261615 N NEWCASTLE AVEAustin29Open—Mobile DeviceCity 311
9/18/20262915 W RASCHER AVELincoln Square39Open—InternetCity 311
9/18/20267935 S PERRY AVEChatham17Open—Alderman's OfficeCity 311
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