Metadata for Other Populated Areas

Metadata for Other Populated Areas (OPAs). These are considered High Consequence Areas (HCAs) as defined in 49 CFR § 195.450. The OPA data is derived from the U.S. Census Bureau’s TIGER Census-Designated Places (CDP) and Incorporated Places geospatial data layers. OPAs are all CDP/Incorporated Places that are not already considered a High Population Area (HPA), i.e. that lie outside of the boundaries of Census Urban Areas that contain 50,000 or more people with a population density of at least 1,000 people per square mile.