Address Count Listing Files Technical Documentation

This page describes the file naming convention and record layout for the Address Count Listing Files. The Address Count Listing Files are updated biannually and include total housing units (including transitory units) and total group quarters counts by current census block. These files are created for all 50 States, the District of Columbia, Puerto Rico, and the Island Areas. The total housing units in the 2023 and 2024 files do not include transitory units.

2020
  • 2026
  • 2025
  • 2024
  • 2023
  • 2020

2020

File Naming Convention for 2020 Address Count Listing Files

The Address Count Listing Files use the following naming convention: <st>_<name>_AddressBlockCountList_<mm><yyyy>.txt,  where:

  • <st> = Two-digit state FIPS code
  • <name> = Concatenated state (or equivalent) name
  • <mm> = Two-digit month the file was created
  • <yyyy> = Four-digit year the file was created 

An example file name is: 

44_RhodeIsland_AddressBlockCountList_062022.txt 

Record Layout for 2020 Address Count Listing Files

Field Name Field Description
STATE Two-digit state FIPS code.
COUNTY Three-digit county FIPS code.
TRACT Current census tract number. Consists of six digits with the first four digits being the basic census tract number and the fifth and sixth digits after the decimal being the tract suffix. If the census tract is not suffixed the fifth and sixth digits are filled with zeroes. It may differ from digits 6-11 of the BLOCK_GEOID.
BLOCK Four-digit census block number. Census blocks are numbered uniquely from 0000 to 9999 within census tract, which nest within state and county. The first digit of the census block number identifies the block group.
BLOCK_GEOID Concatenation of STATE, COUNTY, TRACT, and BLOCK fields, described above, for use in joining the census block-level feedback data to the census blocks in the partnership shapefiles.
TOTAL HOUSING UNITS Total number of addresses in the entity count list identified as housing units or transitory units by data in the Master Address File (MAF).
TOTAL GROUP QUARTERS Total number of addresses in the entity count list identified as group quarters by data in the MAF.
TOTAL CORRECTIONAL FACILITIES FOR ADULTS Total number of addresses in the entity count list identified as group quarters correctional facilities for adults by data in the MAF.
TOTAL FACILITIES FOR JUVENILES Total number of addresses in the entity count list identified as group quarters juvenile facilities by data in the MAF.
TOTAL NURSING FACILITIES/SKILLED-NURSING FACILITIES Total number of addresses in the entity count list identified as group quarters nursing facilities/skilled-nursing facilities by data in the MAF.
TOTAL OTHER INSTITUTIONAL FACILITIES Total number of addresses in the entity count list identified as group quarters other institutional facilities by data in the MAF.
TOTAL COLLEGE/UNIVERSITY STUDENT HOUSING Total number of addresses in the entity count list identified as group quarters college/university student housing by data in the MAF.
TOTAL MILITARY QUARTERS Total number of addresses in the entity count list identified as group quarters military quarters by data in the MAF.
TOTAL OTHER NONINSTITUTIONAL FACILITIES Total number of addresses in the entity count list identified as group quarters other noninstitutional facilities by data in the MAF.
Page Last Revised - July 28, 2026