Philadelphia, Pennsylvania Industries
According to allcitycodes, Philadelphia is one of the most important industrial and commercial centers in the United States. The 1920 census gave as many as 819,000 people (603,237 men and 215,763 women) employed in the various economic activities as follows: agriculture, 3595 individuals; extraction of minerals, 485 industries, 388,690; transport, 66,205; trade, 110,580; public services, 22,065; professions, 42,975; domestic services, 84,455; employees, 99,950. Industries still form the preponderant economic base of the city today. The number of workers employed in the various manufacturing industries was 251,294 in 1909; it was 251,286 in 1914; it rose to 281,105 in 1919, to gradually decrease to 274,319 in 1923 and to 244,655 in 1929. For the same years the number of plants was 8375, 8454, 9064, 6399, 5860 in 1927. The production value…