FAZs are the units of the geographic boundary system used by the PSRC to model and report its small area Forecasts of Population, Households, and Employment. They are built up from traffic analysis zones (TAZs), with each FAZ containing between 1 to 20 TAZs. FAZboundaries generally, with few exceptions, also line up with census tract boundaries, with each FAZ containing between 1 to 9 census tracts. There are a total of 219 FAZs in the region.
