An independent federal contracting resource. Not affiliated with any U.S. government agency.

Data sourced from USASpending.gov and SAM.gov

51 Sector Code
47 Industry Codes
$19.1B Total Federal Spend

Understanding Sector 51

NAICS sector 51 is one of 20 industry sectors defined by the North American Industry Classification System. The federal government uses these codes to classify contract requirements, determine small business eligibility, and track procurement spending across industries. When a federal agency issues a solicitation, they assign a NAICS code that best describes the principal purpose of the acquisition — this determines the applicable size standard for small business participation.

The codes below are sorted by total federal spending, with the highest-spend industries at the top. Click any code to view detailed spending data, top contractors, and guidance on competing for contracts in that industry.

Six-Digit Codes in Sector 51

Code Industry Federal Spend
511210 Software Publishers $6.0B
518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services $3.3B
517110 Wired Telecommunications Carriers $2.2B
513210 Software Publishers $1.5B
517410 Satellite Telecommunications $1.3B
517310 Telecommunications Resellers $918.0M
517919 All Other Telecommunications $873.1M
517111 Wired Telecommunications Carriers $647.9M
517112 Wireless Telecommunications Carriers (except Satellite) $301.9M
511199 All Other Publishers $264.2M
519290 Web Search Portals and All Other Information Services $251.4M
517810 All Other Telecommunications $231.5M
517311 Wired Telecommunications Carriers $223.8M
517312 Wireless Telecommunications Carriers (except Satellite) $211.7M
517911 Telecommunications Resellers $202.8M
519130 Internet Publishing and Broadcasting and Web Search Portals $128.9M
519190 All Other Information Services $65.1M
512110 Motion Picture and Video Production $61.5M
513120 Periodical Publishers $53.9M
511130 Book Publishers $40.7M
511120 Periodical Publishers $37.6M
519210 Libraries and Archives $33.0M
517121 Telecommunications Resellers $29.8M
512290 Other Sound Recording Industries $25.4M
513130 Book Publishers $22.5M
519120 Libraries and Archives $19.5M
513199 All Other Publishers $18.4M
515120 Television Broadcasting $17.6M
516210 Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers $15.0M
518111 Internet Service Providers $10.6M
516110 Radio Broadcasting Stations $5.9M
511140 Directory and Mailing List Publishers $5.9M
519110 News Syndicates $4.7M
515210 Cable and Other Subscription Programming $4.5M
512120 Motion Picture and Video Distribution $4.5M
515111 Radio Networks $4.1M
513110 Newspaper Publishers $3.0M
512191 Teleproduction and Other Postproduction Services $2.3M
517122 Agents for Wireless Telecommunications Services $1.2M
516120 Television Broadcasting Stations $1.0M
511110 Newspaper Publishers $783K
513140 Directory and Mailing List Publishers $744K
512199 Other Motion Picture and Video Industries $678K
512230 Music Publishers $293K
517910 Other Telecommunications $135K
517211 Paging $110K
512240 Sound Recording Studios $73K
Spending data from USASpending.gov. SB% = percentage of contract dollars awarded to small businesses.
  • What is NAICS sector 51?

    NAICS sector 51 covers Information. Establishments engaged in producing and distributing information and cultural products, processing data, and transmitting information. It contains 47 six-digit industry codes used in federal procurement.

  • How much does the federal government spend in sector 51?

    Total federal contract spending across all codes in the Information sector is approximately $19,084,729,800. Individual codes within the sector range from the most active at $6.0B to smaller niche markets.

  • How do NAICS sectors relate to size standards?

    Each six-digit NAICS code has its own SBA size standard — sectors don't have a single standard. Size standards are expressed either as maximum average annual receipts (e.g., $41.5 million) or maximum number of employees (e.g., 500 employees). Click into any six-digit code to see its specific size standard.

Data sourced from USASpending.gov and Census Bureau . Federal contracting data is public domain.