You can find the population of Pennsylvania on the official website of the U.S. Census Bureau or the Pennsylvania State Data Center. These sources provide up-to-date and accurate population data for Pennsylvania.
According to the City-Data website; July 2007: 51,645
Data is neither sample nor population. Data are collected for attributes. These can be for a sample or a population.
The population of First Data is 27,000.
The population of First Data is 2,008.
The population of WM-data is 9,000.
The population of Alliance Data is 9,000.
The population of NTT Data is 57,800.
The population of Alpha Data is 600.
The population of Tandberg Data is 2,012.
The population of Tandberg Data is 350.
The population of Alpha Data is 2,008.