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 Census Bureau. See also active governmental unit, administrative entity, functioning governmental unit, functional status (governmental), governmental unit, inactive governmental unit.

Nonmetropolitan The area and population not located in any MA.

Nonphysical feature See nonvisible feature.

Nonresidential urban land use Any type of cultural land use, such as parks, transportation facilities (airports and railyards), factories, and office and industrial parks, that generally are not populated, but are considered to be integral parts of the urban landscape. When calculating the population density of a census block or AU to define a UA or extended city, the Census Bureau disregards the land area occupied by such land uses; the resultant population density figure more accurately reflects the residential density of the census block or AU. See also population density.

Nonstreet feature A map feature that is not a street, but for which records exist on a map or in a geographic base file. Nonstreet features include pipelines, governmental unit boundaries, power lines, railroads, and water features. See also nonvisible feature, visible feature.

Nonvisible feature A map feature that is not visible, such as a city or county boundary, a property line, a short imaginary extension of a street or road, or a point-to-point line. See also visible feature.

OA See Outlying Area.

Off-reservation A subreservation entity, or tribal or individual trust land, that is located entirely outside the boundaries of an American Indian reservation. See also American Indian subreservation area, American Indian trust land.

Office of Management and Budget (OMB) The OMB (formerly the Bureau of the Budget) is that part of the Executive Branch responsible for evaluating, formulating, and coordinating management procedures and program G-36Glossary