|ZIP Plus 4 Elements
||ZIP PLUS 4 to Block Group Geographic Conversion File
- ZIP Code
- Plus 4
- Carrier Route
- State Abbreviation
- EASI Block Group
- Match Quality Code
- Average Delivery Count
EASI maintains information that relates each residential ZIP+4
to its appropriate Block Group. EASI also identifies the longitude
and latitude for the ZIP+4's.
This annual update is a key component in the EASI update methodology.
This file can be used by direct mailers and others who need to summarize their ZIP+4 information
into standard Census geographies such as Block Groups or Census Tracts. It can also be used to display
on a map of a ZIP+4 analysis. It is for residential ZIP+4s only; the business-to-business ZIP Codes without
population (population is 0) are not included in this file (call for more information).
These database files are both zipped into a single national file with all the ZIP +4's
AND provided as 10 separate zipped files, split by the first
ZIP Code digit.
EASI also offers ZIP4 level Demographic Estimates though the EASI ZIP4 Demographics Files