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News Release Information

18-1442-CHI
Thursday, September 13, 2018

Contacts

Technical information:
Media contact:
  • (312) 353-1138

Consumer Price Index, Chicago-Naperville-Elgin — August 2018

Local prices up 1.7 percent over the year

The Consumer Price Index for All Urban Consumers (CPI-U) in the Chicago-Naperville-Elgin area edged up 0.1 percent in August, the U.S. Bureau of Labor Statistics reported today. Assistant Commissioner for Regional Operations Charlene Peiffer noted that the energy index increased 0.2 percent while food prices fell 0.4 percent in August. The all items less food and energy index increased 0.2 percent over the month. Within the all items less food and energy category, prices were higher for apparel, recreation, and medical care over the month, but fell for shelter and alcoholic beverages. (Data in this report are not seasonally adjusted. Accordingly, month-to-month changes may reflect the impact of seasonal influences.)

Over the last 12 months, the Chicago area all items CPI-U increased 1.7 percent. (See chart 1 and table A.) Over the year, the energy index rose 8.3 percent. The rise in the energy index was primarily due to higher gasoline prices. The food index and the all items less food and energy index rose 0.8 percent and 1.2 percent, respectively, over the year. (See table 1.)

Food

Food prices fell 0.4 percent in August. Of the two components within the food index, prices for food at home (groceries) fell 0.8 percent and prices for food away from home (restaurant, cafeteria, and vending purchases) were unchanged. Within the food at home group, indexes were lower in August for other meats; frozen and freeze dried prepared foods; and other fresh vegetables. Prices were higher for carbonated drinks.

From August 2017 to August 2018, the food index increased 0.8 percent. Over the year, costs for food away from home rose 3.6 percent, while grocery prices were 1.5 percent lower.

Energy

The energy index increased 0.2 percent in August, largely due increases in the utility (piped) gas service index (2.6 percent) and the electricity index (1.2 percent). During the same period, gasoline prices fell 0.9 percent.

Over the year, the Chicago area energy index rose 8.3 percent. From August 2017 to August 2018, gasoline prices rose 17.4 percent. The electricity index and utility (piped) gas index declined 0.7 percent and 0.8 percent, respectively, over the year.

All items less food and energy

The index for all items less food and energy increased 0.2 percent in August. Among the index’s components, prices were higher for apparel (2.1 percent), recreation (0.6 percent), and medical care (0.2 percent), but lower for shelter (-0.1 percent) and alcoholic beverages (-1.4 percent).

Over the year, the index for all items less food and energy rose 1.2 percent. A 3.3-percent increase in the index for shelter was the major contributing factor.

Table A. Chicago-Naperville-Elgin, IL-IN-WI, CPI-U 1-month and 12-month percent changes, all items index, not seasonally adjusted
Month20142015201620172018
1-month12-month1-month12-month1-month12-month1-month12-month1-month12-month

January

0.91.2-0.20.40.80.90.71.80.81.8

February

0.50.70.0-0.2-0.20.70.12.20.01.6

March

1.11.90.7-0.60.10.2-0.12.00.01.8

April

0.52.40.1-0.90.60.70.41.70.72.1

May

-0.11.80.3-0.50.00.30.21.80.42.3

June

0.42.00.2-0.70.50.70.01.3-0.22.2

July

-0.41.9-0.1-0.5-0.8-0.10.02.2-0.31.9

August

0.11.90.4-0.10.2-0.20.32.30.11.7

September

0.02.1-0.3-0.40.60.60.42.1

October

-0.42.0-0.1-0.20.10.8-0.41.6

November

-0.81.6-0.40.20.21.50.41.8

December

-0.41.5-0.60.0-0.21.9-0.41.7

The September 2018 Consumer Price Index for Chicago is scheduled to be released on Thursday, October 11, 2018.


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 population and (2) a CPI for Urban Wage Earners and Clerical Workers (CPI-W) which covers approximately 29 percent of the total 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 5,000 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 (1982-84) that equals 100.0. An increase of 16.5 percent, for example, is shown as 116.5. This change can also be expressed in dollars as follows: the price of a base period "market basket" of goods and services in the CPI has risen from $10 in 1982-84 to $11.65. For further details see the CPI home page on the Internet at www.bls.gov/cpi and the BLS Handbook of Methods, Chapter 17, The Consumer Price Index, available on the Internet at www.bls.gov/opub/hom/pdf/homch17.pdf.

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, Ill.-Ind.-Wis., 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 sensory impaired individuals upon request. Voice phone: (202) 691-5200; Federal Relay Service: (800) 877-8339.

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

IndexesPercent change from-
Jun.
2018
Jul.
2018
Aug.
2018
Aug.
2017
Jun.
2018
Jul.
2018

Expenditure category

All items

238.540237.870238.0981.7-0.20.1

All items (1967=100)

712.659710.657711.338---

Food and beverages

248.382248.655247.4991.0-0.4-0.5

Food

247.656247.925246.9230.8-0.3-0.4

Food at home

233.784234.113232.336-1.5-0.6-0.8

Cereals and bakery products

260.217262.078258.303--0.7-1.4

Meats, poultry, fish and eggs

252.219256.225251.022--0.5-2.0

Dairy and related products

209.139209.072206.805--1.1-1.1

Fruits and vegetables

305.245300.063303.333--0.61.1

Nonalcoholic beverages and beverage materials(1)

187.684187.921188.900-0.60.5

Other food at home

189.310189.727187.449--1.0-1.2

Food away from home

262.010262.199262.1993.60.10.0

Alcoholic beverages

257.328257.659254.0683.4-1.3-1.4

Housing

248.791247.757247.9632.5-0.30.1

Shelter

314.264313.263312.8733.3-0.4-0.1

Rent of primary residence(2)

329.996330.920331.7712.80.50.3

Owners' equiv. rent of residences(2)(3)

318.995319.277319.9194.00.30.2

Owners' equiv. rent of primary residence(2)(3)

318.995319.277319.9194.00.30.2

Fuels and utilities

206.397206.301209.1090.21.31.4

Household energy

161.590161.383164.232-0.61.61.8

Energy services(2)

164.780164.557167.465-0.71.61.8

Electricity(2)

162.181160.005161.872-0.7-0.21.2

Utility (piped) gas service(2)

(r)154.953157.559161.726-0.8(r)4.42.6

Household furnishings and operations

90.49489.01089.460-0.8-1.10.5

Apparel

81.88280.63182.317-6.80.52.1

Transportation

189.782189.227189.3565.1-0.20.1

Private transportation

186.858186.290185.8034.4-0.6-0.3

New and used motor vehicles(4)

94.86495.71895.663-0.8-0.1

New vehicles(1)

170.326170.462171.057-0.40.3

Used cars and trucks(1)

266.633270.340270.646-1.50.1

Motor fuel

271.228265.202262.71717.4-3.1-0.9

Gasoline (all types)

268.535262.555260.09117.4-3.1-0.9

Gasoline, unleaded regular(5)

259.065253.093250.66018.0-3.2-1.0

Gasoline, unleaded midgrade(5)(6)

294.440288.335287.02415.6-2.5-0.5

Gasoline, unleaded premium(5)

289.615285.744283.02814.1-2.3-1.0

Motor vehicle insurance(1)

534.835534.835535.056-0.00.0

Medical care

507.411505.584506.7530.8-0.10.2

Recreation(4)

110.982110.575111.221-3.90.20.6

Education and communication(4)

143.375143.643143.7830.40.30.1

Tuition, other school fees, and childcare(1)

1,184.9381,192.0351,197.070-1.00.4

Other goods and services

393.863395.164394.0522.20.0-0.3

Commodity and service group

All items

238.540237.870238.0981.7-0.20.1

Commodities

168.380167.483167.4750.7-0.50.0

Commodities less food and beverages

128.013126.795127.1730.5-0.70.3

Nondurables less food and beverages

176.756174.592175.2583.1-0.80.4

Durables

84.34183.87084.021-3.1-0.40.2

Services

305.198304.759305.2172.20.00.2

Special aggregate indexes

All items less medical care

226.999226.379226.5651.8-0.20.1

All items less shelter

212.952212.395212.8400.9-0.10.2

Commodities less food

132.580131.373131.6780.6-0.70.2

Nondurables

213.491212.371212.2322.0-0.6-0.1

Nondurables less food

182.215180.139180.6213.2-0.90.3

Services less rent of shelter(3)

311.288311.431312.8261.10.50.4

Services less medical care services

290.662290.264290.7332.50.00.2

Energy

205.363202.665203.1698.3-1.10.2

All items less energy

243.653243.170243.3731.2-0.10.1

All items less food and energy

243.784243.178243.5771.2-0.10.2

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.

 

Last Modified Date: Thursday, September 13, 2018