This proposed rule would adopt the 2020 Core Based Statistical Area CBSA standards as determined by the Office of Management and Budget OMB. The Metropolitan Areas Protection and Standardization Act of 2021 MAPS Act requires agencies that propagate OMB's CBSA Standards for non-statistical use to seek public comment before determining that the propagation supports the purposes of the agency's programs and is in the public interest. This proposed rule describes HUD's use of CBSAs how CBSA standards support relevant programs and how HUD believes the adoption of updated standards ensures accuracy of data and program administration.