Biggest seasonal rent swings in Illinois

How far typical asking rents move between the cheapest and priciest month in Illinois cities, from at least five years of Zillow data. Cities with 15,000+ residents.

Key findings

Westmont ranks first, with a swing of 4.9% between December and June.
Across all 38 cities on this list, the median rent is $2,039/mo.

Data as of September 2026. Gap between the cheapest and priciest calendar month, from Zillow's unadjusted and seasonally adjusted rent indexes over five or more years. Updated monthly. Download this list (CSV)

Best value (RRS)Overheated (RRS)Most affordable Most expensive Rent falling Rent rising Best rent/income Most rent-burdened Record-high rent Seasonal swings Rent vs. income

38 cities

Rank	City	Yearly swing	Cheapest month	Priciest month	Median rent
01	WestmontIL Pop. 24KCompare →	4.9%	December	June	$1,871/mo
02	Carol StreamIL Pop. 39KCompare →	4.1%	December	June	$1,844/mo
03	Vernon HillsIL Pop. 27KCompare →	4.0%	December	July	$2,587/mo
04	LockportIL Pop. 26KCompare →	4.0%	February	July	$2,213/mo
05	ElmhurstIL Pop. 46KCompare →	3.4%	December	July	$2,453/mo
06	ChicagoIL Pop. 2.7MCompare →	3.4%	December	July	$2,311/mo
07	WheelingIL Pop. 38KCompare →	3.4%	January	July	$2,009/mo
08	RomeovilleIL Pop. 41KCompare →	3.1%	December	August	$2,073/mo
09	Arlington HeightsIL Pop. 76KCompare →	3.0%	January	July	$1,999/mo
10	BolingbrookIL Pop. 74KCompare →	2.7%	February	August	$2,742/mo
11	Oak ParkIL Pop. 53KCompare →	2.5%	December	May	$2,044/mo
12	NapervilleIL Pop. 151KCompare →	2.4%	January	June	$2,236/mo
13	LombardIL Pop. 44KCompare →	2.3%	November	July	$2,094/mo
14	UrbanaIL Pop. 39KCompare →	2.3%	August	December	$1,348/mo
15	SchaumburgIL Pop. 77KCompare →	2.2%	January	July	$2,125/mo
16	Des PlainesIL Pop. 59KCompare →	2.2%	January	July	$2,079/mo
17	Mount ProspectIL Pop. 55KCompare →	2.2%	January	July	$1,835/mo
18	NorthbrookIL Pop. 35KCompare →	2.1%	March	August	$3,014/mo
19	PalatineIL Pop. 66KCompare →	2.1%	December	June	$1,895/mo
20	WheatonIL Pop. 54KCompare →	2.0%	December	June	$2,375/mo
21	GlenviewIL Pop. 48KCompare →	1.9%	October	May	$2,601/mo
22	LisleIL Pop. 23KCompare →	1.9%	December	August	$1,919/mo
23	SkokieIL Pop. 66KCompare →	1.7%	December	July	$2,371/mo
24	BerwynIL Pop. 56KCompare →	1.7%	November	May	$1,485/mo
25	RockfordIL Pop. 148KCompare →	1.7%	January	August	$1,227/mo
26	AuroraIL Pop. 180KCompare →	1.6%	December	July	$2,294/mo
27	BloomingtonIL Pop. 79KCompare →	1.5%	December	July	$1,270/mo
28	Glendale HeightsIL Pop. 33KCompare →	1.4%	December	September	$1,920/mo
29	JolietIL Pop. 150KCompare →	1.4%	February	May	$1,675/mo
30	SpringfieldIL Pop. 113KCompare →	1.4%	January	June	$1,178/mo
31	PlainfieldIL Pop. 47KCompare →	1.3%	January	July	$3,027/mo
32	PeoriaIL Pop. 112KCompare →	1.3%	December	July	$1,240/mo
33	ElginIL Pop. 115KCompare →	1.2%	November	August	$1,923/mo
34	BellevilleIL Pop. 41KCompare →	1.1%	February	May	$1,120/mo
35	Hoffman EstatesIL Pop. 51KCompare →	0.9%	November	June	$2,039/mo
36	ChampaignIL Pop. 90KCompare →	0.9%	January	June	$1,466/mo
37	EvanstonIL Pop. 76KCompare →	0.8%	December	July	$2,438/mo
38	WaukeganIL Pop. 89KCompare →	0.8%	January	April	$1,660/mo