The Annual Survey of Manufactures (ASM) provides key intercensal measures of manufacturing activity, products, and location for the public and private sectors. The ASM provides the best current measure of current U.S. manufacturing industry outputs, inputs, operating status, and is the primary basis for updates of the Longitudinal Research Database (LRD). Census Bureau staff and academic researchers with sworn agent status use the LRD for micro data analysis.

Statistics are available on a sample universe of manufacturing establishments with one or more paid employees at any time during the year for manufacturing classified in NAICS sectors 31-33. Employment, payroll, hours, cost of materials, operating expenses, shipments and receipts for services, value added, inventories, and relative standard errors data are available for the U.S. at the 2- through 6-digit NAICS levels.

The ASM is conducted annually, except for years ending in 2 and 7, at which time ASM data are included In the manufacturing sector of the Economic Census.

Read more information about the Annual Survey of Manufactures.

• API Call: api.census.gov/data/timeseries/asm/area2017?key=YOUR_KEY_GOES_HERE
• Examples: api.census.gov/data/timeseries/asm/area2017/examples.html?key=YOUR_KEY_GOES_HERE
• Geographies: api.census.gov/data/timeseries/asm/area2017/geography.html?key=YOUR_KEY_GOES_HERE
• Variables: api.census.gov/data/timeseries/asm/area2017/variables.html?key=YOUR_KEY_GOES_HERE
• Example Call: Shows the number of employees under Manufacturing, NAICS2017 31-33, for 2021
  
  api.census.gov/data/timeseries/asm/area2017?get=NAICS2017_LABEL,EMP&for=us:*&YEAR=2021&NAICS2017=31-33&key=YOUR_KEY_GOES_HERE

Please note that Symbols will show in the associated flag field for variables.  The data value shown will be zero.  The following abbreviations and symbols are used with these data:

A Standard error of 100 percent or more

D Withheld to avoid disclosing data of individual companies; data are included in higher level totals

N Not available or not comparable

S Withheld because estimates did not meet publication standards

X Not applicable

r Revised

s Sampling error exceeds 40 percent (represented as a superscript)