Prices in the Chicago-Naperville-Elgin area, as measured by the Consumer Price Index for All Urban Consumers (CPI-U), increased 0.1 percent in October, the U.S. Bureau of Labor Statistics reported today. (See table A.) Regional Commissioner Jason Palmer noted that the energy index was down 0.6 percent, while the food index was unchanged in October. The all items less food and energy index rose 0.2 percent. (Data in this report are not seasonally adjusted. Accordingly, month-to-month changes may reflect seasonal influences.)

Over the last 12 months, the CPI-U increased 7.7 percent. (See chart 1 and table A.) The index for all items less food and energy increased 6.1 percent over the year. Energy prices rose 21.4 percent, largely the result of an increase in the price of utility (piped) gas service. Food prices rose 9.3 percent. (See table 1.)

Food

Food prices were unchanged for the month of October. Prices for food at home (groceries) declined 0.1 percent, and prices for food away from home (restaurant, cafeteria, and vending purchases) rose 0.1 percent for the same period.

Over the year, food prices rose 9.3 percent. Prices for food at home rose 10.0 percent since a year ago, and prices for food away from home rose 7.8 percent.

Energy

The energy index declined 0.6 percent over the month The decrease was mainly due to lower prices for electricity (-11.6 percent). Prices for gasoline increased 4.5 percent, while prices for utility (piped) gas service decreased 0.7 percent for the same period.

Energy prices increased 21.4 percent over the year, largely due to higher prices for utility (piped) gas service (44.3 percent). Prices paid for gasoline increased 24.1 percent, while prices for electricity decreased 7.7 percent during the past year.

All items less food and energy

The index for all items less food and energy increased 0.2 percent in October. Higher prices for shelter (1.0 percent) and recreation (1.4 percent) were partially offset by lower prices for apparel (-2.7 percent) and education and communication (-1.0 percent).

Over the year, the index for all items less food and energy increased 6.1 percent. Components contributing to the increase included shelter (6.2 percent), new and used motor vehicles (9.2 percent), and recreation (10.3 percent). Partly offsetting the increases was a price decrease in education and communication (-1.8 percent).

Table A. Chicago-Naperville-Elgin, IL-IN-WI, CPI-U 1-month and 12-month percent changes, all items index, not seasonally adjusted

Month	2018		2019		2020		2021		2022
	1-month	12-month	1-month	12-month	1-month	12-month	1-month	12-month	1-month	12-month
January	0.8	1.8	0.6	0.8	0.9	2.6	0.7	0.7	0.9	6.8
February	0.0	1.6	0.6	1.4	0.0	2.0	0.6	1.2	0.8	7.1
March	0.0	1.8	0.1	1.5	-0.7	1.1	0.6	2.6	1.4	7.8
April	0.7	2.1	-0.1	0.8	-0.9	0.3	1.0	4.6	0.4	7.2
May	0.4	2.3	0.8	1.2	1.0	0.4	1.0	4.7	1.8	8.0
June	-0.2	2.2	-0.4	1.0	0.3	1.1	0.4	4.7	1.3(r)	8.9(r)
July	-0.3	1.9	0.3	1.6	0.2	1.0	0.4	4.9	-0.2(r)	8.4(r)
August	0.1	1.7	0.2	1.6	0.1	1.0	0.1	4.8	0.1(r)	8.3(r)
September	0.4	1.6	0.2	1.4	0.6	1.4	0.3	4.5	0.2(r)	8.2(r)
October	0.0	2.0	0.3	1.8	-0.1	1.0	0.7	5.3	0.1(r)	7.7(r)
November	-0.6	1.0	-0.2	2.2	-0.4	0.8	0.2	6.0
December	-0.3	1.1	-0.2	2.2	-0.2	0.9	0.4	6.6
Footnotes: (r) Revised

The November 2022 Consumer Price Index for the Chicago-Naperville-Elgin area is scheduled to be released on Tuesday, December 13, 2022.

Technical Note

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 Bureau of Labor Statistics publishes CPIs for two population groups: (1) a CPI for All Urban Consumers (CPI-U) which covers approximately 93 percent of the total U.S. population and (2) a CPI for Urban Wage Earners and Clerical Workers (CPI-W) which covers approximately 29 percent of the total U.S. population. The CPI-U includes, in addition to wage earners and clerical workers, groups such as professional, managerial, and technical workers, the self-employed, short-term workers, the unemployed, and retirees and others not in the labor force.

The CPI is based on prices of food, clothing, shelter, and fuels, transportation fares, charges for doctors' and dentists' services, drugs, and the other goods and services that people buy for day-to-day living. Each month, prices are collected in 75 urban areas across the country from about 6,000 housing units and approximately 22,000 retail establishments—department stores, supermarkets, hospitals, filling stations, and other types of stores and service establishments. All taxes directly associated with the purchase and use of items are included in the index.

The index measures price changes from a designated reference date; for most of the CPI-U the reference base is 1982-84 equals 100. An increase of 7 percent from the reference base, for example, is shown as 107.000.  Alternatively, that relationship can also be expressed as the price of a base period market basket of goods and services rising from $100 to $107. For further details see the CPI home page on the Internet at www.bls.gov/cpi and the CPI section of the BLS Handbook of Methods available on the internet at www.bls.gov/opub/hom/cpi/.

In calculating the index, price changes for the various items in each location are averaged together with weights that represent their importance in the spending of the appropriate population group. Local data are then combined to obtain a U.S. city average. Because the sample size of a local area is smaller, the local area index is subject to substantially more sampling and other measurement error than the national index. In addition, local indexes are not adjusted for seasonal influences. As a result, local area indexes show greater volatility than the national index, although their long-term trends are quite similar. 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 covered in this release is comprised of 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.

Information in this release will be made available to individuals with sensory impairments upon request. Voice phone: (202) 691-5200; Telecommunications Relay Service: 7-1-1.

Table 1. Consumer Price Index for All Urban Consumers (CPI-U): Indexes and percent changes for selected periods
Chicago-Naperville-Elgin, IL-IN-WI (1982-84=100 unless otherwise noted)

Item and Group	Indexes			Percent change from-
	Aug. 2022	Sep. 2022	Oct. 2022	Oct. 2021	Aug. 2022	Sep. 2022
Expenditure category
All items	(r)277.454	(r)278.030	278.415	7.7	(r)0.3	(r)0.1
All items (1967=100)	(r)828.917	(r)830.638	831.789	-	-	-
Food and beverages	305.319	306.514	307.040	9.2	0.6	0.2
Food	306.927	307.977	307.947	9.3	0.3	0.0
Food at home	285.633	285.822	285.583	10.0	0.0	-0.1
Cereals and bakery products	319.626	319.882	320.577	12.4	0.3	0.2
Meats, poultry, fish and eggs	314.075	313.629	311.643	8.9	-0.8	-0.6
Dairy and related products	257.708	255.628	264.611	15.4	2.7	3.5
Fruits and vegetables	356.083	352.283	347.089	5.8	-2.5	-1.5
Nonalcoholic beverages and beverage materials(1)	237.260	242.010	240.129	9.6	1.2	-0.8
Other food at home	230.227	231.212	231.728	11.1	0.7	0.2
Food away from home	327.905	330.652	331.052	7.8	1.0	0.1
Alcoholic beverages	280.807	284.272	293.536	8.3	4.5	3.3
Housing	(r)291.956	(r)293.130	293.956	7.6	(r)0.7	(r)0.3
Shelter	356.626	359.095	362.707	6.2	1.7	1.0
Rent of primary residence(2)	377.091	379.085	383.055	5.9	1.6	1.0
Owners' equiv. rent of residences(2)(3)	366.013	368.438	372.871	6.4	1.9	1.2
Owners' equiv. rent of primary residence(2)(3)	366.013	368.438	372.871	6.4	1.9	1.2
Fuels and utilities	(r)292.466	(r)292.341	280.297	15.9	(r)-4.2	(r)-4.1
Household energy	(r)242.430	(r)241.570	229.268	19.1	(r)-5.4	(r)-5.1
Energy services(2)	(r)247.352	(r)246.452	233.854	19.1	(r)-5.5	(r)-5.1
Electricity(2)	(r)171.447	(r)171.507	151.598	-7.7	(r)-11.6	(r)-11.6
Utility (piped) gas service(2)	333.602	331.501	329.029	44.3	-1.4	-0.7
Household furnishings and operations	109.107	108.224	108.678	8.7	-0.4	0.4
Apparel	91.423	92.465	89.956	5.8	-1.6	-2.7
Transportation	239.716	236.086	237.823	13.1	-0.8	0.7
Private transportation	241.520	237.148	240.301	13.3	-0.5	1.3
New and used motor vehicles(4)	121.888	121.333	120.450	9.2	-1.2	-0.7
New vehicles(1)	210.580	211.861	212.529	13.0	0.9	0.3
Used cars and trucks(1)	409.782	393.330	384.673	2.4	-6.1	-2.2
Motor fuel	395.810	367.540	383.882	24.3	-3.0	4.4
Gasoline (all types)	391.615	363.541	379.784	24.1	-3.0	4.5
Gasoline, unleaded regular(5)	379.068	351.396	367.480	24.2	-3.1	4.6
Gasoline, unleaded midgrade(5)(6)	427.038	399.924	413.152	24.5	-3.3	3.3
Gasoline, unleaded premium(5)	406.275	383.288	395.975	22.9	-2.5	3.3
Medical care	540.531	546.894	544.424	3.0	0.7	-0.5
Recreation(4)	123.405	124.488	126.185	10.3	2.3	1.4
Education and communication(4)	140.838	140.525	139.080	-1.8	-1.2	-1.0
Tuition, other school fees, and childcare(1)	1,238.083	1,238.373	1,239.502	0.5	0.1	0.1
Other goods and services	434.817	442.807	441.302	6.1	1.5	-0.3
Commodity and service group
All items	(r)277.454	(r)278.030	278.415	7.7	(r)0.3	(r)0.1
Commodities	203.360	201.860	202.060	8.7	-0.6	0.1
Commodities less food and beverages	152.852	150.509	150.579	8.3	-1.5	0.0
Nondurables less food and beverages	206.671	202.934	204.747	10.9	-0.9	0.9
Durables	104.162	102.885	101.966	5.9	-2.1	-0.9
Services	(r)345.939	(r)348.895	349.472	7.0	(r)1.0	(r)0.2
Special aggregate indexes
All items less medical care	(r)266.439	(r)266.739	267.265	8.1	(r)0.3	(r)0.2
All items less shelter	(r)250.412	(r)250.380	249.732	8.4	(r)-0.3	(r)-0.3
Commodities less food	157.665	155.411	155.675	8.3	-1.3	0.2
Nondurables	256.150	254.739	255.954	9.9	-0.1	0.5
Nondurables less food	211.878	208.489	210.700	10.7	-0.6	1.1
Services less rent of shelter(3)	(r)351.797	(r)355.391	352.580	7.8	(r)0.2	(r)-0.8
Services less medical care services	(r)330.507	(r)333.075	333.933	7.4	(r)1.0	(r)0.3
Energy	(r)301.541	(r)290.506	288.717	21.4	(r)-4.3	(r)-0.6
All items less energy	278.257	279.823	280.397	6.6	0.8	0.2
All items less food and energy	273.983	275.652	276.341	6.1	0.9	0.2
Footnotes (1) Index on a December 1977=100 base. (2) This index series was calculated using a Laspeyres estimator. All other item stratum index series were calculated using a geometric means estimator. (3) Index on a December 1982=100 base. (4) Indexes on a December 1997=100 base. (5) Special index based on a substantially smaller sample. (6) Index on a December 1993=100 base. (r) Revised
- Data not available. Note: Index applies to a month as a whole, not to any specific date. Data not seasonally adjusted.