2022 NAICS national industry in sector 48-49 Transportation and Warehousing
485112 Commuter Rail Systems
NAICS 485112 is the US industry code for commuter rail systems. This U.S.
- Code
- 485112 (2022 NAICS)
- Title
- Commuter Rail Systems
- Part of
- Urban Transit Systems
- SBA small business limit
- Average annual receipts up to $47 million
- Closest UK SIC
- 49200 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in operating local and suburban commuter rail systems over regular routes and on a regular schedule within a metropolitan area and its adjacent nonurban areas. Commuter rail is usually characterized by reduced fares, multiple ride and commutation tickets, and mostly used by passengers during the morning and evening peak periods.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Operating local and suburban mass passenger transit systems using both commuter rail and another mode of transport are classified in U.S. Industry 485111, Mixed Mode Transit Systems.
- Operating stand-alone subway or light rail systems are classified in U.S. Industry 485119, Other Urban Transit Systems.
- Providing scenic and sightseeing transportation on land are classified in Industry 487110, Scenic and Sightseeing Transportation, Land.
Activities listed under 485112
The Census index assigns these 6 activities to this code. If your business matches one, this is your code.
- Commuter rail systems (except mixed mode)
- Local passenger rail systems (except mixed mode)
- Rail transportation (except mixed mode), commuter
- Railway systems (except mixed mode), commuter
- Suburban commuter rail systems (except mixed mode)
- Urban commuter rail systems (except mixed mode)
SBA size standard for 485112
To count as a small business for SBA loans and federal contracts under NAICS 485112, your business (including affiliates) must not exceed $47 million in average annual receipts. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 4921), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.