Chicago Basement Flooding Index by Neighborhood

Name: Chicago Basement Flooding Index by Neighborhood
Creator: Plumbers 911 Chicago
License: Free to reuse with attribution and a link

Between October 11, 2025 to October 11, 2026, Chicago logged 7,320 water-in-basement 311 complaints. Per 10,000 residents the hardest-hit community areas were Calumet Heights (242.6 per 10k), Pullman (122.6 per 10k) and Burnside (116.6 per 10k). The table updates from the City's open 311 data; figures lag events by a day or two.

Complaints by community area

Click a column header to sort.

Rank	Community area	Basement complaints	Street-flooding complaints	Population	Per 10k residents
1	Calumet Heights	293	78	12,078	242.6
2	Pullman	84	41	6,851	122.6
3	Burnside	26	7	2,229	116.6
4	West Pullman	253	166	25,159	100.6
5	Avalon Park	94	64	9,492	99.0
6	Washington Heights	235	163	26,310	89.3
7	Roseland	322	194	37,660	85.5
8	Ashburn	297	203	42,842	69.3
9	Greater Grand Crossing	183	198	29,052	63.0
10	South Deering	94	78	15,100	62.3
11	Norwood Park	241	184	40,074	60.1
12	Chatham	182	194	31,440	57.9
13	Morgan Park	118	167	21,288	55.4
14	Edison Park	62	52	11,398	54.4
15	North Park	104	48	19,259	54.0
16	Beverly	103	167	19,811	52.0
17	Auburn Gresham	239	218	46,483	51.4
18	West Englewood	128	144	25,971	49.3
19	South Chicago	135	134	29,072	46.4
20	Englewood	91	116	21,337	42.6
21	Chicago Lawn	217	265	52,245	41.5
22	West Lawn	131	125	32,451	40.4
23	Forest Glen	78	129	19,763	39.5
24	South Shore	178	239	46,276	38.5
25	Austin	356	332	100,278	35.5
26	Jefferson Park	95	125	26,991	35.2
27	Oakland	15	33	4,373	34.3
28	Fuller Park	7	29	2,186	32.0
29	Riverdale	24	20	7,740	31.0
30	Garfield Ridge	109	163	36,265	30.1
31	Mount Greenwood	54	218	19,107	28.3
32	Hegewisch	23	36	8,895	25.9
33	North Lawndale	78	147	30,355	25.7
34	Gage Park	89	132	34,650	25.7
35	Edgewater	119	279	47,484	25.1
36	East Side	57	73	23,629	24.1
37	Clearing	59	103	24,710	23.9
38	Portage Park	152	204	64,201	23.7
39	West Ridge	177	278	79,220	22.3
40	Woodlawn	54	149	24,437	22.1
41	Montclare	30	40	13,755	21.8
42	Archer Heights	30	57	13,875	21.6
43	Rogers Park	111	197	53,169	20.9
44	East Garfield Park	40	96	19,855	20.1
45	Dunning	84	131	42,548	19.7
46	Kenwood	28	65	14,368	19.5
47	Irving Park	104	272	53,535	19.4
48	Albany Park	91	212	47,830	19.0
49	Grand Boulevard	47	133	24,808	18.9
50	Belmont Cragin	139	228	73,988	18.8
51	West Elsdon	34	75	18,201	18.7
52	North Center	62	241	35,782	17.3
53	West Garfield Park	28	78	16,345	17.1
54	Humboldt Park	89	157	55,015	16.2
55	New City	63	149	40,843	15.4
56	Lincoln Park	92	452	62,067	14.8
57	Hermosa	34	79	23,200	14.7
58	Avondale	46	193	36,350	12.7
59	Lake View	114	506	90,652	12.6
60	Lower West Side	43	170	34,177	12.6
61	Hyde Park	30	172	24,092	12.5
62	Brighton Park	52	96	42,360	12.3
63	Lincoln Square	51	254	42,180	12.1
64	West Town	103	722	86,453	11.9
65	Uptown	62	324	52,674	11.8
66	Washington Park	14	65	12,362	11.3
67	Bridgeport	36	100	33,012	10.9
68	Logan Square	76	437	71,354	10.7
69	South Lawndale	73	147	69,554	10.5
70	Near West Side	61	375	65,370	9.3
71	Armour Square	9	68	13,149	6.8
72	McKinley Park	10	50	15,400	6.5
73	Douglas	11	52	18,629	5.9
74	Near South Side	15	78	26,307	5.7
75	Loop	17	101	38,284	4.4
76	Near North Side	32	229	91,635	3.5
77	Ohare	3	19	16,281	1.8

Methodology and limits

Counts come from City of Chicago 311 service requests with type codes AAF (water in basement) and AAE (street flooding).
Duplicate reports for the same address and type are excluded.
Population denominators are the ACS 2023 5-year estimates by community area.
A 311 complaint is a resident report, not verified damage — it measures where people call the city about water, not confirmed losses.
311 data lags events by roughly 1–2 days.

What this means for your basement

A working sump pump is the first line of defense in high-index areas.
A battery backup keeps it running when storms knock out power.
If water already came up through a floor drain, sewage backup cleanup covers sanitizing the space.
A sewer camera inspection finds roots, cracks, or bellies before the next big rain.

Have water in your basement? Call 833-758-6911.

Reuse this data

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Data: data.json · Chart: chart.svg

Attribution: “Chicago Basement Flooding Index, Plumbers 911 Chicago” with a link to this page.

Sources

Last updated October 11, 2026.