1997 Manufacturing Sector

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SIC CodeIndustryEst(1)Total establishmentsEstablishments with 20 or more employeesNumber of employees (thousands)Payroll ($M)Number of production workers (thousands)Production worker hours (millions)Production worker wages ($M)Value added by manufacture ($M)Cost of materials ($M)Value of shipments ($M)New Capital Expenditures ($M)
31-33 AllManufacturing210642305098130170734134564935695421560658516019511
334Computer & Electronic Products82167492647816134056794296522939662762807


  1. Some payroll and sales data for small single establishment companies with up to 20 employees (cutoff varied by industry) were obtained from administrative records of other government agencies rather than from census report forms. These data were then used in conjunction with industry averages to estimate statistics for these small establishments. This technique was also used for a small number of other establishments whose reports were not received at the time data were tabulated. The following symbols are shown where estimated data based on administrative record data account for 10 percent or more of the figures shown:
    • 1: 10 to 19 percent
    • 2: 20 to 29 percent
    • 3: 30 to 39 percent
    • 4: 40 to 49 percent
    • 5: 50 to 59 percent
    • 6: 60 to 69 percent
    • 7: 70 to 79 percent
    • 8: 80 to 89 percent
    • 9: 90 percent or more
  2. Industries with 500 employees or more are shown. Some statistics are withheld to avoid disclosing data for individual companies. If employment is 500 or more, number of establishments is shown and employment size range is indicated by one of the following symbols:
    • a: 0 to 19 employees
    • b: 20 to 99 employees
    • c: 100 to 249 employees
    • e: 250 to 499 employees
    • f: 500 to 999 employees
    • g: 1,000 to 2,499 employees
    • h: 2,500 to 4,999 employees
    • i: 5,000 to 9,999 employees
    • j: 10,000 to 24,999 employees
    • k: 25,000 to 49,999 employees
    • l: 50,000 to 99,999 employees
    • m: 100,000 employees or more
  3. D: Withheld to avoid disclosing information about individual companies. Data is included in broader categories.

Source: U. S. Census Bureau, Massachusetts, 1997 Economic Census, Manufacturing, Geographic Area Series, May 2000.

For full documentation on the 1997 Economic Census, visit the Census Bureau's 1997 Economic Census home page. For more information about this industry sector in Cambridge, visit the report for Massachusetts Accommodation and Food Services. For more information about NAICS, visit the official NAICS web page maintained by the U. S. Census Bureau. For information about the comparability of NAICS and SIC codes, visit the Bridge Between 1997 NAICS and 1987 SIC Classification Systems.

The figures presented here should not compared to the employment by industry figures generated by the Massachusetts Executive Office of Labor and Workforce Development. The methodology and intended uses of the information differ, making direct comparisons impracticable.

For More Information

For more information about socioeconomic and demographic statistics about Cambridge, please contact Cliff Cook, ccook@cambridgema.gov, Planning Information Manager, at 617/349-4656.