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Population changes are a key factor affecting the volume of travel in the region. In addition, where and how people live greatly determines which transportation facilities and modes get used most and which warrant the greatest investment of transportation funding. For these reasons, the NJTPA maintains active programs to monitor and forecast demographic changes. The NJTPA uses several sources of data, including decennial census data (such as journey-to-work), intercensal surveys (such as the American Community Survey), and demographic forecasts.
Available data on NJTPA demographics have been divided into two sources: Forecasts and Census demographics.
Among the demographic trends described in the NJTPA Regional Transportation Plan, adopted in 2013, are the following:
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