Output port that contains a United States census block group number.
The Census Bureau uses census tracts and census blocks to organize census data. A census tract is composed of census block groups. A census block group is composed of census blocks.
The Census Bureau uses demographic data to define census tracts so that the inhabitants of each tract have a common economic status and population profile. The Census Bureau does not use demographic data to define census blocks.
A census block group contains an average of 39 census block. Each census block group has a maximum of 3,000 inhabitants. A census tract can contain between one and nine census block groups.
Census Block Group Usage
Select Census Block Group to identify the census block group that an address belongs to.
Use census tract and census block data to analyze the distribution of your mail items. For example, before you run a direct mail campaign, you can use census tract and census block data to verify that mail items are distributed evenly across a city or region.
Port Location
The following table provides the location and default precision of the Census Block Group port:
Port Type
Port Group
Template Model
Precision
Output
US Supplementary
Basic
1
Census Block Group Output Codes
Census block groups use a single digit in the range from one through nine. A block group consists of all census blocks that begin with same digit.