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UA
Urbanized area - An area consisting of a central place(s) and adjacent territory with a general population density of at least 1,000 people per square mile of land area that together have a minimum residential population of at least 50,000 people.
UC
Urban cluster - A densely settled territory that has at least 2,500 people but fewer than 50,000. New for Census 2000.
Unemployed
All civilians 16 years old and over are classified as unemployed if they (1) were neither "at work" nor "with a job but not at work" during the reference week, and (2) were actively looking for work during the last 4 weeks, and (3) were available to accept a job. Also included as unemployed are civilians who did not work at all during the reference week, were waiting to be called back to a job from which they had been laid off, and were available for work except for temporary illness.
Related terms: Employed, Labor Force
United States
The 50 states and the District of Columbia.
United States or American
Refers to people who identified their ancestry as "American," "United States," as a region such as "Southerner," or as a U.S. state such as "Texan."
Related term: Ancestry
Units in structure
A structure is a separate building that either has open spaces on all sides or is separated from other structures by dividing walls that extend from ground to roof. In determining the number of units in a structure, all housing units, both occupied and vacant, are counted.
Universe
The total number of units, e.g., individuals, households, businesses, in the population of interest.
Unmarried partner
A person who is not related to the householder, who shares living quarters with, and who has a close personal relationship with the householder.
Unmarried-partner household
Household in which the householder and his or her partner are not legally married or participating in a common law marriage.
Related terms: Household, Householder
Unorganized Territory
Occur in 10 minor civil division (MCD) states where portions of counties are not included in any legally established MCD or independent incorporated place. The pieces are recognized as one or more separate county subdivisions for statistical data presentation purposes.
Unrelated individual
Person, sharing a housing unit, who is not related to the householder by birth, marriage or adoption. Includes foster children.
Related terms: Foster children, Householder, Nonrelatives
Upper bound (American Community Survey)
Represents the high end of the 90 percent confidence interval of an estimate from a sample survey. Statisticians calculate that they are 90 percent confident that the true number falls between the upper and lower bounds.
Related terms: Confidence interval (American Community Survey), Estimates (American Community Survey and Census 2000 Supplementary Survey), Lower bound (American Community Survey), Sample data
Urban
All territory, population and housing units in urbanized areas and in places of more than 2,500 persons outside of urbanized areas. "Urban" classification cuts across other hierarchies and can be in metropolitan or non-metropolitan areas.
Related terms: Metropolitan, Rural
Urban Area
Collective term referring to all areas that are urban. For Census 2000, there are two types of urban areas: urban clusters and urbanized areas.
Urban Cluster
(UC) A densely settled territory that has at least 2,500 people but fewer than 50,000. New for Census 2000.
Urban Growth Area
Legally defined entity in Oregon. Defined around incorporated places and used to regulate urban growth. They are delineated cooperatively by state and local officials and then confirmed by state law. New for Census 2000.
Urbanized area
(UA) An area consisting of a central place(s) and adjacent territory with a general population density of at least 1,000 people per square mile of land area that together have a minimum residential population of at least 50,000 people. The Census Bureau uses published criteria to determine the qualification and boundaries of UAs.
Usual hours worked per week worked in (designated calendar year)
The data pertain to the number of hours a person usually worked during the weeks worked in the designated calendar year. The respondent was to report the number of hours worked per week in the majority of the weeks he or she worked in the designated calendar year. If the hours worked per week varied considerably during the designated calendar year, the respondent was asked to report an approximate average of the hours worked per week. People 16 years old and over who reported that they usually worked 35 or more hours each week during the weeks they worked are classified as "Usually worked full time"; people who reported that they usually worked 1 to 34 hours are classified as "Usually worked part time."
Related term: Employed
Usual hours worked per week worked in the past 12 months
The data pertain to the number of hours a person usually worked during the weeks worked in the past 12 months. The respondent was to report the number of hours worked per week in the majority of the weeks he or she worked in the past 12 months. If the hours worked per week varied considerably during the past 12 months, the respondent was asked to report an approximate average of the hours worked per week. People 16 years old and over who reported that they usually worked 35 or more hours each week during the weeks they worked are classified as "Usually worked full time"; people who reported that they usually worked 1 to 34 hours are classified as "Usually worked part time."
Related term: Employed
Usual residence
The living quarters where a person spends more nights during a year than any other place.
Related term: Living quarters
Usual residence elsewhere
A housing unit temporarily occupied at the time of enumeration entirely by people with a usual residence elsewhere is classified as vacant. The occupants are classified as having a "Usual residence elsewhere" and are counted at the address of their usual place of residence.
Related term: Housing unit
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