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

53,552 reports match your filters.

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
8/26/2026	6524 W BELMONT AVE	Belmont Cragin	38	Completed	14 days	Internet	City 311
8/29/2025	5249 N CANFIELD AVE	Norwood Park	41	Completed	14 days	Internet	City 311
8/12/2026	16 N LOCKWOOD AVE	Austin	37	Completed	14 days	Phone Call	City 311
9/4/2026	1907 W BELLE PLAINE AVE	North Center	47	Completed	14 days	Internet	City 311
9/14/2026	2924 W MARQUETTE RD	Chicago Lawn	15	Completed	14 days	Internet	City 311
7/29/2026	3438 N TRIPP AVE	Irving Park	30	Completed	14 days	Phone Call	City 311
9/9/2026	4901 W MONTANA ST	Belmont Cragin	31	Completed	14 days	Internet	City 311
7/30/2025	8304 W ADDISON ST	Dunning	38	Completed	14 days	Phone Call	City 311
8/21/2026	2422 S MILLARD AVE	South Lawndale	22	Completed	14 days	Phone Call	City 311
8/19/2026	2438 W BRADLEY PL	North Center	47	Completed	14 days	Internet	City 311
8/3/2026	3729 W EASTWOOD AVE	Albany Park	33	Completed	14 days	Phone Call	City 311
8/7/2025	5223 W DAKIN ST	Portage Park	45	Completed	14 days	Phone Call	City 311
8/28/2026	2434 W MONTROSE AVE	Lincoln Square	47	Completed	14 days	Phone Call	City 311
8/14/2026	7846 S CARPENTER ST	Auburn Gresham	17	Completed	14 days	Phone Call	City 311
9/14/2026	8024 S ABERDEEN ST	Auburn Gresham	17	Completed	14 days	Phone Call	City 311
8/25/2025	4932 W CORTEZ ST	Austin	37	Completed	14 days	Phone Call	City 311
7/21/2026	3602 N ARTESIAN AVE	North Center	47	Completed	14 days	Mobile Device	City 311
9/2/2025	5625 S KILDARE AVE	West Elsdon	13	Completed	14 days	Alderman's Office	City 311
8/26/2025	8500 S BUFFALO AVE	South Chicago	10	Completed	14 days	Alderman's Office	City 311
9/8/2026	5818 S MERRIMAC AVE	Garfield Ridge	13	Completed	14 days	Internet	City 311
8/7/2025	5601 S NORMANDY AVE	Garfield Ridge	13	Completed	14 days	Alderman's Office	City 311
8/19/2026	4800 N DAMEN AVE	Lincoln Square	47	Completed	14 days	Mobile Device	City 311
8/6/2025	4337 S SAWYER AVE	Brighton Park	12	Completed	14 days	Alderman's Office	City 311
8/12/2026	2755 N KENMORE AVE	Lincoln Park	43	Completed	14 days	Phone Call	City 311
8/6/2025	4816 W BARRY AVE	Belmont Cragin	31	Completed	14 days	Alderman's Office	City 311

Page 159 of 2,143

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