TAZ layer for extended region, aligned with MCDs in DVRPC region using Census block boundaries to divide zones within municipalities (updated in July 2023)Data originated from 2010 Census file and modified over the years for DVRPC travel demand model purposes.A travel analysis zone (TAZ) is a special area delineated by state and/or local transportation officials for tabulating travel-related data-especially journey-to-work and place-of-work statistics. A TAZ usually consists of one or more census blocks, block groups, or census tracts.