|Number||Census Class & Code||Description|
|53||Incorporated Places - C5||An active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent.|
|1||American Indian Areas - D3||Legal federally recognized American Indian area consisting of off-reservation trust land only.|
|1||American Indian Areas - D4||Legal state-recognized American Indian area.|
|5||Counties and County Equivalents - H1||An active county or equivalent feature.|
|9||Counties and County Equivalents - H4||An inactive county or equivalent feature.|
|298||Active Minor Civil Divisions - T1||An active county subdivision that is not coextensive with an incorporated place.|
|8||Land Grants & Other - N/A||Land Grants and Other Unclassified Civil Features|
The Demographic Data for the 1,112 Massachusetts cities, towns, counties, ZIP Codes and Census Designated Places (CDPs) profiled in this gazetteer is updated annually. Last Update: July 1, 2014.
The ZIP Code maps and the data regarding the number of residential and business addresses in each ZIP Code are updated four times per year. Last Update: November 1, 2014.
The information on the 31,601 Massachusetts Physical, Cultural and Historic Features is updated six times per year. Last Update: October 5, 2014.
The School Attendance Zone Maps for 1,106 Massachusetts public schools are updated four times per year. Last Update: October 6, 2014.