SIC 40-49

SIC Code 40-49: Transportation, Communications, Electric, Gas, And Sanitary Services

SIC codes 40-49 cover Transportation, Communications, Electric, Gas, And Sanitary Services.

covers railroads, trucking, airlines, pipelines, telephone and broadcast communications, electric utilities, gas distribution, and water and sanitation services. These infrastructure industries move people, goods, and information while delivering essential energy and utility services.

This is a top-level division in the SIC 1987 classification system, covering 10 major groups, 37 industry groups, and 67 4-digit industries.

Major Groups

Industry Groups

SIC Industries

Classification

Major Groups in This Division

SIC Code	Major Group Title	Industry Groups
40	SIC 40 — Railroads	1
41	SIC 41 — Local and Suburban Transit and Interurban Highway Passenger Transportation	6
42	SIC 42 — Motor Freight Transportation and Warehousing	3
43	SIC 43 — United States Postal Service	1
44	SIC 44 — Water Transportation	6
45	SIC 45 — Transportation by Air	3
46	SIC 46 — Pipelines, Except Natural Gas	1
47	SIC 47 — Transportation Services	4
48	SIC 48 — Communications	5
49	SIC 49 — Electric, Gas, and Sanitary Services	7

SIC 1987

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Other SIC Divisions

SIC 01-09 — Agriculture, Forestry, And Fishing5 major groups

SIC 10-14 — Mining4 major groups

SIC 15-17 — Construction3 major groups

SIC 20-39 — Manufacturing20 major groups

SIC 50-51 — Wholesale Trade2 major groups

SIC 52-59 — Retail Trade8 major groups

SIC 60-67 — Finance, Insurance, And Real Estate7 major groups

SIC 70-89 — Services16 major groups

SIC 91-97 — Public Administration7 major groups

SIC 99 — Nonclassifiable Establishments1 major groups

Need the NAICS equivalent? convert a SIC code to NAICS using the mapping table — SIC 1987 four-digit industries paired with NAICS 2022 at the five-digit industry level, with coverage gaps stated.