1990 Blocks
GIS File Name
DEMOGRAPHICS_Blocks1990
Description
This polygon layer contains the 802 census blocks that make up the City of Cambridge for the 1990 Census.
Purpose
Created for spatial analysis of associated Census 1990 demographic data. Used for planning, mapping, and Community Development Block Grant (CBDG) purposes by the Community Development Department.
Download Layer Data
Attributes
| Name |
Type Details |
Description |
| TRACTBLK |
type: Integer
width: 4
precision: 10 |
Unique block ID, concatenated from Tract number and block ID |
| POP100 |
type: Double
width: 8
precision: 10 |
Census block population in 1990 |
Coordinate System
NAD 1983 StatePlane Massachusetts Mainland FIPS 2001 Feet