Weekly Rat Trends — Nov 2–Nov 8, 2026

🐀 948 new reports — down 7% from the week before
👑 Lake View is Rat King with 67 reports
📈 Biggest jump: Logan Square, up 15 from last week
🏙️ The city took 9.7 days on average to resolve a complaint

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

59,882 reports match your filters.

NeighborhoodWardStatusZip codeFromTo

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
9/22/2026	217 W VAN BUREN ST	Loop	34	Completed	1 day	Mobile Device	City 311
7/31/2025	850 S STATE ST	Loop	4	Completed	8 days	Internet	City 311
11/4/2024	600 S WABASH AVE	Loop	4	Completed	1 day	Internet	City 311
7/25/2026	996 S PARK TER	Loop	4	Completed	11 days	Internet	City 311
8/22/2026	40 E 9TH ST	Loop	4	Completed	8 days	Phone Call	City 311
8/7/2025	401 S FINANCIAL PL	Loop	34	Completed	5 days	Internet	City 311
9/27/2023	740 S FEDERAL ST	Loop	4	Completed	15 days	Mobile Device	City 311
9/3/2026	98 S MCCORMICK PL BUSWAY	Loop	42	Completed	11 days	Internet	City 311
9/15/2026	525 S STATE ST	Loop	4	Completed	10 days	Internet	City 311
11/4/2024	600 S WABASH AVE	Loop	4	Completed	1 day	Internet	City 311
3/26/2024	1130 S MICHIGAN AVE	Loop	4	Completed	1 day	Mobile Device	City 311
8/3/2026	155 W VAN BUREN ST	Loop	34	Completed	9 days	Internet	City 311
8/5/2026	12 S MICHIGAN AVE	Loop	34	Completed	7 days	Internet	City 311
10/3/2026	98 S MCCORMICK PL BUSWAY	Loop	42	Completed	3 days	Internet	City 311
9/22/2026	600 S CLARK ST	Loop	34	Completed	1 day	Mobile Device	City 311
8/18/2026	450 E WATERSIDE DR	Loop	42	Completed	2 days	Phone Call	City 311
8/4/2025	180 N LASALLE ST	Loop	42	Completed	1 day	Internet	City 311
8/5/2026	321 S FRANKLIN ST	Loop	34	Completed	1 day	Internet	City 311
9/9/2026	201 N MICHIGAN AVE	Loop	42	Completed	4 days	Internet	City 311
7/28/2026	430 S CLARK ST	Loop	34	Completed	15 days	Phone Call	City 311
9/4/2026	300 S WABASH AVE	Loop	4	Completed	11 days	Mobile Device	City 311
10/5/2026	700 S FEDERAL ST	Loop	4	Completed	15 days	Internet	City 311
8/6/2024	410 S WABASH AVE	Loop	4	Completed	9 days	Internet	City 311
8/17/2026	416 S PLYMOUTH CT	Loop	34	Completed	14 days	Internet	City 311
10/18/2023	740 S FEDERAL ST	Loop	4	Completed	16 days	Mobile Device	City 311

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