Suburbs are independently incorporated municipalities or districts on the fringes or outskirts of cities, and industrial or manufacturing suburbs are a special type. Historically, industrial suburbs were classified separately from manufacturing suburbs. According to Victor Jones, communities were classified as industrial rather than manufacturing if more than 30 percent of local jobs are in retail trades—making industrial communities more diversified than manufacturing communities. The terms are now used interchangeably as industrial suburbs have evolved and changed since World War II.
Today, industrial suburbs are specialized places of employment that feature manufacturing or industrial jobs. Thus, all suburbs in which 50 percent or more of the local jobs are in manufacturing or industry are classified as either industrial or manufacturing suburbs. This is so even if the percentage of workers employed in retail trade exceeds 30 percent of all local employment. In whatever combination, manufacturing institutions must provide the majority of the employment opportunities. Additionally, the value added to the local economy from adjusted manufacturing value of product sales must exceed that of total retail sales and banking and finance.
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