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errata

BLS identified errors in average price data for natural gas for Chicago from May 2018–July 2018. For more information on errors and correction plans, please visit: https://www.bls.gov/bls/errata/cpi-errata-08082018.htm

News Release Information

18-930-CHI
Tuesday, June 12, 2018

Contacts

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

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

Local prices up 2.3 percent over the year

The Consumer Price Index for All Urban Consumers (CPI-U) in the Chicago-Naperville-Elgin area rose 0.4 percent in May, the U.S. Bureau of Labor Statistics reported today. Assistant Commissioner for Regional Operations Charlene Peiffer noted that the energy index increased 4.9 percent while food prices were unchanged in May. The all items less food and energy index edged up 0.1 percent over the month. Within the all items less food and energy category, prices were higher for shelter and medical care. The apparel index was lower over the month. (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 2.3 percent. (See chart 1 and table A.) Over the year, the energy index rose 13.2 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 were up 1.0 percent and 1.6 percent, respectively, over the year. (See table 1.)

  Chart 1. Over-the-year percent change in CPI-U, Chicago-Naperville-Elgin, May 2015-May 2018

Food

Food prices were unchanged in May. The food at home index (groceries) fell 0.9 percent, while the food away from home (restaurant, cafeteria, and vending purchases) index increased 1.2 percent. Within the food at home group, indexes were higher in May for citrus fruits, lettuce, and pork chops. Prices were lower for frozen fruits and vegetables and tomatoes.

From May 2017 to May 2018, the food index increased 1.0 percent. Over the year, costs for food away from home rose 3.1 percent. Grocery prices were 0.7 percent lower.

Energy

The energy index increased 4.9 percent in May, primarily due to a 7.9-percent rise in gasoline prices. Utility (piped) gas service costs rose 1.9 percent, and electricity costs increased 0.6 percent in May.

Over the year, the Chicago area energy index rose 13.2 percent. From May 2017 to May 2018, gasoline prices rose 25.3 percent, and the electricity index was 3.8 percent higher. The index for utility (piped) gas service fell 4.1 percent.

All items less food and energy

The index for all items less food and energy edged up 0.1 percent in May. Among the index’s components, prices were higher for shelter (0.6 percent) and medical care (1.0 percent) but lower for apparel (-6.6 percent).

Over the year, the index for all items less food and energy rose 1.6 percent. A 3.6-percent increase in the index for owners’ equivalent rent of primary residence 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
Month 2014 2015 2016 2017 2018
1-month 12-month 1-month 12-month 1-month 12-month 1-month 12-month 1-month 12-month

January

0.9 1.2 -0.2 0.4 0.8 0.9 0.7 1.8 0.8 1.8

February

0.5 0.7 0.0 -0.2 -0.2 0.7 0.1 2.2 0.0 1.6

March

1.1 1.9 0.7 -0.6 0.1 0.2 -0.1 2.0 0.0 1.8

April

0.5 2.4 0.1 -0.9 0.6 0.7 0.4 1.7 0.7 2.1

May

-0.1 1.8 0.3 -0.5 0.0 0.3 0.2 1.8 0.4 2.3

June

0.4 2.0 0.2 -0.7 0.5 0.7 0.0 1.3

July

-0.4 1.9 -0.1 -0.5 -0.8 -0.1 0.0 2.2

August

0.1 1.9 0.4 -0.1 0.2 -0.2 0.3 2.3

September

0.0 2.1 -0.3 -0.4 0.6 0.6 0.4 2.1

October

-0.4 2.0 -0.1 -0.2 0.1 0.8 -0.4 1.6

November

-0.8 1.6 -0.4 0.2 0.2 1.5 0.4 1.8

December

-0.4 1.5 -0.6 0.0 -0.2 1.9 -0.4 1.7

The June 2018 Consumer Price Index for Chicago is scheduled to be released on Thursday, July 12, 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

Indexes Percent change from-
Mar.
2018
Apr.
2018
May
2018
May
2017
Mar.
2018
Apr.
2018

Expenditure category

All items

236.388 237.940 238.910 2.3 1.1 0.4

All items (1967=100)

706.230 710.864 713.762 - - -

Food and beverages

246.389 247.299 247.201 1.3 0.3 0.0

Food

245.333 246.231 246.349 1.0 0.4 0.0

Food at home

233.221 234.813 232.597 -0.7 -0.3 -0.9

Cereals and bakery products

258.379 262.073 258.122 - -0.1 -1.5

Meats, poultry, fish and eggs

250.666 255.205 251.629 - 0.4 -1.4

Dairy and related products

208.465 212.746 207.717 - -0.4 -2.4

Fruits and vegetables

306.194 301.709 303.282 - -1.0 0.5

Nonalcoholic beverages and beverage materials(1)

187.205 189.862 186.289 - -0.5 -1.9

Other food at home

189.092 189.662 188.707 - -0.2 -0.5

Food away from home

257.476 257.476 260.567 3.1 1.2 1.2

Alcoholic beverages

260.605 261.701 258.163 5.3 -0.9 -1.4

Housing

245.805 246.937 248.217 2.7 1.0 0.5

Shelter

309.865 311.516 313.371 3.4 1.1 0.6

Rent of primary residence(2)

328.539 329.294 329.299 2.9 0.2 0.0

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

314.822 316.604 317.477 3.6 0.8 0.3

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

314.822 316.604 317.477 3.6 0.8 0.3

Fuels and utilities

202.021 202.511 205.145 1.1 1.5 1.3

Household energy

158.903 158.886 160.711 0.6 1.1 1.1

Energy services(2)

162.063 162.010 163.875 0.6 1.1 1.2

Electricity(2)

159.071 157.335 158.295 3.8 -0.5 0.6

Utility (piped) gas service(2)

153.310 155.684 158.703 -4.1 3.5 1.9

Household furnishings and operations

91.844 91.920 91.061 -1.7 -0.9 -0.9

Apparel

85.785 89.128 83.216 -3.4 -3.0 -6.6

Transportation

184.853 188.765 192.761 4.8 4.3 2.1

Private transportation

181.092 185.010 188.742 4.9 4.2 2.0

New and used motor vehicles(4)

95.457 95.627 95.496 - 0.0 -0.1

New vehicles(1)

172.180 172.594 171.135 - -0.6 -0.8

Used cars and trucks(1)

269.682 268.349 266.244 - -1.3 -0.8

Motor fuel

239.157 256.938 277.250 25.2 15.9 7.9

Gasoline (all types)

236.672 254.381 274.555 25.3 16.0 7.9

Gasoline, unleaded regular(5)

227.343 245.126 264.978 26.2 16.6 8.1

Gasoline, unleaded midgrade(5)(6)

263.707 280.665 300.597 21.5 14.0 7.1

Gasoline, unleaded premium(5)

262.647 277.286 294.909 19.9 12.3 6.4

Motor vehicle insurance(1)

536.319 537.131 532.316 - -0.7 -0.9

Medical care

497.203 499.220 504.205 2.2 1.4 1.0

Recreation(4)

113.429 112.911 112.227 1.0 -1.1 -0.6

Education and communication(4)

143.666 143.655 143.566 0.5 -0.1 -0.1

Tuition, other school fees, and childcare(1)

1,183.808 1,184.870 1,184.870 - 0.1 0.0

Other goods and services

395.090 390.309 394.393 2.4 -0.2 1.0

Commodity and service group

All items

236.388 237.940 238.910 2.3 1.1 0.4

Commodities

166.674 168.517 168.856 2.0 1.3 0.2

Commodities less food and beverages

126.540 128.549 129.008 2.4 2.0 0.4

Nondurables less food and beverages

170.581 175.689 177.888 7.0 4.3 1.3

Durables

86.223 85.939 85.162 -3.6 -1.2 -0.9

Services

302.629 303.876 305.458 2.5 0.9 0.5

Special aggregate indexes

All items less medical care

225.198 226.731 227.525 2.4 1.0 0.4

All items less shelter

211.577 213.099 213.764 1.8 1.0 0.3

Commodities less food

131.178 133.200 133.586 2.5 1.8 0.3

Nondurables

209.046 212.389 213.609 3.9 2.2 0.6

Nondurables less food

176.399 181.380 183.345 6.9 3.9 1.1

Services less rent of shelter(3)

310.595 311.456 312.808 1.6 0.7 0.4

Services less medical care services

288.154 289.384 291.039 2.9 1.0 0.6

Energy

190.130 197.745 207.460 13.2 9.1 4.9

All items less energy

242.722 243.712 243.862 1.6 0.5 0.1

All items less food and energy

243.075 244.083 244.239 1.6 0.5 0.1

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.

- Data not available.
Note: Index applies to a month as a whole, not to any specific date. Data not seasonally adjusted.

 

Last Modified Date: Tuesday, June 12, 2018