Name: Chicago Rat and Rodent Sightings
Creator: RatCity

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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.

32080fewer → more

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

52,998 reports match your filters.

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
8/1/2025	7405 S INDIANA AVE	Greater Grand Crossing	6	Completed	3 days	Phone Call	City 311
8/1/2025	7529 S MICHIGAN AVE	Greater Grand Crossing	6	Completed	3 days	Phone Call	City 311
8/1/2025	8213 S MARSHFIELD AVE	Auburn Gresham	17	Completed	10 days	Phone Call	City 311
8/1/2025	3051 N NORDICA AVE	Montclare	29	Completed	7 days	Mobile Device	City 311
8/1/2025	7816 S EMERALD AVE	Auburn Gresham	17	Completed	12 days	Phone Call	City 311
8/1/2025	3918 W 101ST PL	Mount Greenwood	19	Completed	3 days	Phone Call	City 311
8/1/2025	10228 S HARDING AVE	Mount Greenwood	19	Completed	3 days	Phone Call	City 311
8/1/2025	10624 S HAMLIN AVE	Mount Greenwood	19	Completed	3 days	Phone Call	City 311
8/1/2025	1847 N SEDGWICK ST	Lincoln Park	43	Completed	3 days	Phone Call	City 311
8/1/2025	665 W SHERIDAN RD	Lake View	46	Completed	11 days	Phone Call	City 311
8/1/2025	824 W DAKIN ST	Lake View	46	Completed	11 days	Phone Call	City 311
8/1/2025	5046 W FLETCHER ST	Belmont Cragin	31	Completed	17 days	Mobile Device	City 311
8/1/2025	3831 N LAKEWOOD AVE	Lake View	44	Completed	4 days	Phone Call	City 311
8/1/2025	1934 W EDDY ST	North Center	47	Completed	11 days	Internet	City 311
8/1/2025	5000 N NASHVILLE AVE	Norwood Park	41	Completed	6 days	Mobile Device	City 311
8/1/2025	5001 N NATOMA AVE	Norwood Park	41	Completed	6 days	Mobile Device	City 311
8/1/2025	2307 N ROCKWELL ST	Logan Square	1	Completed	11 days	Mobile Device	City 311
8/1/2025	401 W BELDEN AVE	Lincoln Park	43	Completed	6 days	Internet	City 311
8/1/2025	3500 N ORIOLE AVE	Dunning	38	Completed	10 days	Phone Call	City 311
8/1/2025	4058 W VAN BUREN ST	West Garfield Park	28	Completed	3 days	Mobile Device	City 311
8/1/2025	2049 N AVERS AVE	Logan Square	26	Completed	6 days	Phone Call	City 311
8/1/2025	3124 S PARNELL AVE	Bridgeport	11	Completed	6 days	Phone Call	City 311
8/1/2025	2646 W WILCOX ST	East Garfield Park	27	Completed	10 days	Phone Call	City 311
8/1/2025	3408 N KILDARE AVE	Irving Park	30	Completed	18 days	Internet	City 311
8/1/2025	5019 W IRVING PARK RD	Portage Park	45	Completed	5 days	Internet	City 311