BOC PIK Crosswalk American Community Survey (ACS)

Description

The American Community Survey (ACS) Protected Identification Key (PIK) Crosswalks are used to link ACS microdata files to other microdata files with a Protected Identification Key (PIK) variable.

The ACS is part of the Decennial Census Program. This survey is sent to a random sample of households in the United States and Puerto Rico on a rotating basis. The ACS collects information from U.S. households similar to what was collected on the decennial census "long form."

Scope and Coverage

Smallest Geographic Unit

Census tract

Years Available

2001 - 2024

Universe

The universe for the American Community Survey (ACS) and the Decennial Censuses is the resident population. This universe includes all persons who are “usually resident” in a specified geographic area. For the United States, the resident population includes all persons who usually reside in the 50 states and the District of Columbia, but excludes residents of the Commonwealth of Puerto Rico and the Island areas under U.S. sovereignty or jurisdiction (principally American Samoa, Guam, United States Virgin Islands, and the Commonwealth of the Northern Mariana Islands). In addition, the U.S. resident population excludes U.S. Armed Forces overseas and civilian U.S. citizens whose usual place of residence is outside the United States.

Spatial Coverage

Not applicable

Unit of Observation

Classification(s)