RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4612 locations in the last 30 days (4764 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

1,102 reports match your filters.

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DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/6/20267000 S CALIFORNIA AVEChicago Lawn17Open—Phone CallCity 311
10/6/20261959 N SEMINARY AVELincoln Park43Open—InternetCity 311
10/6/20265036 N LOCKWOOD AVEJefferson Park45Open—Mobile DeviceCity 311
10/6/20265311 S BLACKSTONE AVEHyde Park5Open—Phone CallCity 311
10/6/20264435 S WALLACE STNew City15Open—InternetCity 311
10/6/20265040 N NEWLAND AVENorwood Park41Open—Mobile DeviceCity 311
10/6/20261046 N ST LOUIS AVEHumboldt Park36Open—Phone CallCity 311
10/6/20265040 N NEWLAND AVENorwood Park41Open—Phone CallCity 311
10/6/20264634 W 79TH STAshburn18Open—Phone CallCity 311
10/6/20268858 S CALUMET AVEChatham6Open—Phone CallCity 311
10/6/20267801 S WABASH AVEGreater Grand Crossing6Open—Phone CallCity 311
10/6/202612139 S LOWE AVEWest Pullman21Open—Mobile DeviceCity 311
10/6/20267748 S ESSEX AVESouth Shore7Open—Phone CallCity 311
10/6/20263436 N ASHLAND AVELake View47Open—InternetCity 311
10/6/20263421 W FULLERTON AVELogan Square35Open—InternetCity 311
10/6/20262919 W SHERWIN AVEWest Ridge50Open—Mobile DeviceCity 311
10/6/20265151 N MELVINA AVEJefferson Park45Open—InternetCity 311
10/6/20261037 W 97TH PLWashington Heights21Open—Phone CallCity 311
10/6/20267636 S DAMEN AVEAuburn Gresham18Open—Phone CallCity 311
10/6/20263218 W 84TH STAshburn18Open—Phone CallCity 311
10/6/20267830 S BENNETT AVESouth Shore8Open—Phone CallCity 311
10/6/20261634 N AVERS AVEHumboldt Park26Open—Phone CallCity 311
10/6/20265412 N KIMBALL AVENorth Park39Open—InternetCity 311
10/6/20265536 S WOOD STWest Englewood16Open—InternetCity 311
10/6/20265453 N LINDER AVEJefferson Park45Open—Mobile DeviceCity 311
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