The Consumer Price Index for All Urban Consumers (CPI-U) in the Chicago-Naperville-Elgin area declined 0.9 percent in June, the U.S. Bureau of Labor Statistics (BLS) reported today. Assistant Commissioner for Regional Operations Michael Hirniak noted that an 8.3-percent decrease in the energy index was the largest contributor to the monthly decline. The index for all items less food and energy was down 0.4 percent, while the index for food decreased 0.3 percent in June. (Data in this report are not seasonally adjusted. Accordingly, month-to-month changes may reflect seasonal influences.)

The Chicago-Naperville-Elgin area all items CPI-U increased 2.5 percent for the 12 months ending in June. The index for all items less food and energy increased 1.7 percent over the year. The energy index rose 12.5 percent, and the food index increased 2.5 percent.

  

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Chart 1. Over-the-year percent change in CPI-U, Chicago-Naperville-Elgin, IL-IN-WI, June 2023–June 2026

Month	All items	All items less food and energy
Jun 2023	2.1	5.1
Jul 2023	2.2	4.7
Aug 2023	2.3	4.0
Sep 2023	2.3	3.6
Oct 2023	2.4	4.1
Nov 2023	2.5	4.1
Dec 2023	3.3	4.1
Jan 2024	3.3	3.9
Feb 2024	3.4	3.8
Mar 2024	3.1	3.2
Apr 2024	3.0	3.3
May 2024	3.1	3.3
Jun 2024	3.0	3.4
Jul 2024	3.7	3.9
Aug 2024	3.8	4.3
Sep 2024	4.1	5.0
Oct 2024	3.5	4.1
Nov 2024	3.8	4.5
Dec 2024	3.9	4.4
Jan 2025	4.3	4.8
Feb 2025	3.8	4.6
Mar 2025	3.7	4.6
Apr 2025	3.1	3.7
May 2025	3.3	3.9
Jun 2025	3.5	3.8
Jul 2025	2.7	3.0
Aug 2025	3.1	3.2
Sep 2025	2.9	2.7
Oct 2025	-	-
Nov 2025	2.5	2.3
Dec 2025	2.2	1.9
Jan 2026	1.3	1.4
Feb 2026	2.0	1.8
Mar 2026	2.3	1.6
Apr 2026	3.1	2.2
May 2026	3.7	2.4
Jun 2026	2.5	1.7
Note: The October 2025 data values are not available due to the 2025 lapse in appropriations.

The index for food declined 0.3 percent for the month of June. The food at home (grocery store purchases) index decreased 0.4 percent, with lower prices seen in 3 of the 6 major grocery store food groups. The food away from home index (restaurant, cafeteria, and vending purchases) decreased by 0.2 percent for the same period.

The index for food advanced 2.5 percent over the year. The food at home index rose 0.8 percent. Grocery food categories increasing over the year included cereals and bakery products (+6.5 percent) and meats, poultry, fish, and eggs (+3.8 percent). The index for other food at home was down 2.4 percent over the year.

The energy index declined 8.3 percent over the month. Gasoline prices fell 13.4 percent from May to June.

From June 2025 to June 2026, the energy index rose 12.5 percent. The gasoline index was up 21.3 percent over the year.

The index for all items less food and energy declined 0.4 percent in June. Among the index’s components, prices were lower for apparel (-6.1 percent), public transportation, and other goods and services (-3.1 percent). In contrast, prices were higher for household furnishings and operations (+1.6 percent) and owners’ equivalent rent of residences (+0.2 percent).

The all items less food and energy index advanced 1.7 percent over the year. Components contributing to the increase included owners’ equivalent rent (+4.4 percent), public transportation, and rent of primary residence (+5.3 percent). In contrast, prices were lower for education and communication (-3.2 percent) and medical care services.

The July 2026 Consumer Price Index for the Chicago-Naperville-Elgin area is scheduled to be released on Wednesday, August 12, 2026.

The Consumer Price Index (CPI) is a measure of the average change in prices over time in a fixed market basket of goods and services. The Consumer Price Index for Chicago is published monthly. The set of components and sub-aggregates published for regional and metropolitan indexes is more limited than at the U.S. city average level; these indexes are byproducts of the national CPI program. Each local index has a much smaller sample size than the national or regional indexes and is, therefore, subject to substantially more sampling and other measurement error. As a result, local-area indexes are more volatile than the national or regional indexes. In addition, local indexes are not adjusted for seasonal influences. NOTE: Area indexes do not measure differences in the level of prices between cities; they only measure the average change in prices for each area since the base period.

The Chicago-Naperville-Elgin, IL-IN-WI Core Based Statistical Area includes Cook, DeKalb, DuPage, Grundy, Kane, Kendall, Lake, McHenry, and Will Counties in Illinois; Jasper, Lake, Newton, and Porter Counties in Indiana; and Kenosha County in Wisconsin.

Refer to the national CPI news release technical note or the Handbook of Methods for more information.

If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.

Table 1. Chicago-Naperville-Elgin, IL-IN-WI, CPI-U by expenditure category for June 2026, not seasonally adjusted (1982-84=100 unless otherwise noted)

Expenditure category	Indexes				Percent change from:
	Historical data	Apr. 2026	May 2026	Jun. 2026	Jun. 2025	Apr. 2026	May 2026
All items		309.364	312.867	309.915	2.5	0.2	-0.9
All items (1967=100)		924.251	934.718	925.898	-	-	-
Food and beverages		339.855	338.235	337.128	2.3	-0.8	-0.3
Food		340.839	339.404	338.225	2.5	-0.8	-0.3
Food at home		309.611	307.450	306.103	0.8	-1.1	-0.4
Cereals and bakery products		353.368	352.654	359.153	6.5	1.6	1.8
Meats, poultry, fish, and eggs		345.738	346.590	340.333	3.8	-1.6	-1.8
Dairy and related products		258.651	256.128	263.238	-2.1	1.8	2.8
Fruits and vegetables		368.502	361.514	345.579	0.5	-6.2	-4.4
Nonalcoholic beverages and beverage materials(1)		279.176	285.447	272.680	-1.5	-2.3	-4.5
Other food at home		247.598	241.723	249.199	-2.4	0.6	3.1
Food away from home		378.866	378.804	377.988	5.3	-0.2	-0.2
Alcoholic beverages		323.112	319.115	318.961	0.0	-1.3	0.0
Housing		336.871	339.819	340.427	3.6	1.1	0.2
Shelter		432.065	434.635	435.119	4.5	0.7	0.1
Rent of primary residence		464.262	466.072	467.954	5.3	0.8	0.4
Owners' equiv. rent of residences(2)		446.463	448.023	449.053	4.4	0.6	0.2
Owners' equiv. rent of primary residence(2)		446.463	448.023	449.053	4.4	0.6	0.2
Household furnishings and operations		106.480	104.808	106.489	-0.8	0.0	1.6
Apparel		97.156	101.937	95.759	4.2	-1.4	-6.1
Transportation		256.411	264.466	254.061	3.1	-0.9	-3.9
Private transportation		255.775	262.741	252.256	0.9	-1.4	-4.0
New and used motor vehicles(3)		117.346	117.709	118.205	0.3	0.7	0.4
New vehicles(1)		215.727	215.953	216.255	0.7	0.2	0.1
Used cars and trucks(1)		349.147	354.711	359.576	-1.2	3.0	1.4
Motor fuel		385.562	432.091	374.405	21.5	-2.9	-13.4
Gasoline (all types)		382.805	428.939	371.592	21.3	-2.9	-13.4
Gasoline, unleaded regular(4)		369.725	415.118	358.024	21.6	-3.2	-13.8
Gasoline, unleaded midgrade(4)(5)		425.249	473.022	419.575	20.3	-1.3	-11.3
Gasoline, unleaded premium(4)		412.403	453.994	408.654	18.9	-0.9	-10.0
Medical care		565.150	566.596	567.919	-0.9	0.5	0.2
Recreation(3)		143.900	143.261	143.266	2.5	-0.4	0.0
Education and communication(3)		138.426	140.376	139.681	-3.2	0.9	-0.5
Tuition, other school fees, and childcare(6)		95.383	95.383	95.786	-3.8	0.4	0.4
Other goods and services		528.548	543.923	527.303	-0.9	-0.2	-3.1
Footnotes (1) Indexes on a December 1977=100 base. (2) Indexes on a December 1982=100 base. (3) Indexes on a December 1997=100 base. (4) Special index based on a substantially smaller sample. (5) Indexes on a December 1993=100 base. (6) Indexes on a December 2024=100 base.
- Data not available. NOTE: Index applies to a month as a whole, not to any specific date.

Table 2. Chicago-Naperville-Elgin, IL-IN-WI, CPI-U by special aggregate index for June 2026, not seasonally adjusted (1982-84=100 unless otherwise noted)

Special aggregate index	Indexes				Percent change from:
	Historical data	Apr. 2026	May 2026	Jun. 2026	Jun. 2025	Apr. 2026	May 2026
All items		309.364	312.867	309.915	2.5	0.2	-0.9
Food		340.839	339.404	338.225	2.5	-0.8	-0.3
Energy		296.249	326.789	299.679	12.5	1.2	-8.3
All items less food and energy		310.086	312.199	310.953	1.7	0.3	-0.4
All items less energy		314.059	315.642	314.408	1.9	0.1	-0.4
All items less medical care		298.740	302.330	299.200	2.7	0.2	-1.0
All items less shelter		267.755	271.515	267.517	1.5	-0.1	-1.5
Commodities		210.354	213.518	209.212	3.1	-0.5	-2.0
Commodities less food		155.718	160.094	155.110	3.6	-0.4	-3.1
Commodities less food & beverages		149.921	154.451	149.406	3.8	-0.3	-3.3
Durables		93.285	93.053	93.631	-1.3	0.4	0.6
Nondurables		277.102	282.859	274.769	4.7	-0.8	-2.9
Nondurables less food		222.201	233.246	220.139	7.4	-0.9	-5.6
Nondurables less food & beverages		215.271	227.206	213.344	8.2	-0.9	-6.1
Services		402.702	406.374	405.144	2.0	0.6	-0.3
Services less rent of shelter(1)		392.037	397.004	393.946	-0.4	0.5	-0.8
Services less medical care services		389.008	392.976	391.639	2.4	0.7	-0.3
Footnotes (1) Indexes on a December 1982=100 base.
- Data not available. NOTE: Index applies to a month as a whole, not to any specific date.