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<br />" .' <br /> <br />.' <br /> <br />1\7~(, <br /> <br />2 <br /> <br />Standard metropolitan statistical areas,- The Bureau <br />of the Census rt:Cogmzes approximatelY 250 standard <br />metropolitan statistical areas (SMSA's) in the 1970 <br />census These include the 231 SMSA's (including <br />three in Puerto Rico) as defined and named in the <br />Bureau of the Budget publication, Stardard Metro. <br />politan Statistical Areas: 7961. U.S. Government <br />Printing Office, Washington, D.C. 20402. Also <br />included are two SMSA's as defined by the Bureau of <br />the Budget in January 196B. In addition, a number of <br />SMSA's are being defined on the basis of the results <br />from the 1970 census. <br /> <br />Except in the New England States, a standard <br />metropolitan statistical area is a countY or group of <br />contiguous counties which contains at least one city <br />of 50,000 inhabitants or more, or "twin cities" with a <br />combined population of at least 50,000. I n addition <br />to the county, or counties, containing such a city or <br />cities, contiguous counties are included in an SMSA <br />if, according to certain criteria, they are socially and <br />economically integrated with a central city. In a few <br />cities where portions of counties outside the SMSA as <br />defined in 1967 were annexed to the central city, the <br />population living in those counties is not considered <br />part of the central city. In the New England States, <br />SMSA's consist of towns and cities instead of <br />counties. For a complete description of the criteria <br />used in defining SMSA's, see the Bureau of the <br />Budget publication cited above. <br /> <br />Plac8S.- Two types of places oro recugnized in tho <br />census reports, incorporated places and unincorpo- <br />rated places. Incorporated places are political units <br />incorporated as cities, boroughs, towns, and villages <br />except for (a) boroughs in Alaska and (b) towns In <br />the New England States, New York, and Wisconsin. <br />Unincorporated places are closely settled population <br />centers without corporate limits for which the Census <br />Bureau has delineated boundaries Each place so <br />delineated possesses a definite nucleus of residences <br />and has its boundaries drawn to include, if feasible, <br />all the surrounding closely settled area. Unincorpo- <br />rated places are identified with the letter "U." <br /> <br />Towns.-I n this series of reports, data for towns of <br />10,000 inhabitants or more are shown in the reports <br />for the New England States I n these States, towns <br />are the primary political subdivision of the county, <br />unlike most other States where towns are generally <br />incorporated places <br /> <br />Housing units and group quarters,-AII living querters <br />are classified in the census as either housing units or <br />group quarters Usuallv, living quarters are in struc- <br />TUres intended for residential use (e.9., a one. family <br /> <br />home, apartment house, hotel or motel, boerding <br />house, mobile home or trailer, etc.). Livin9 quarters <br />may also be in structures intended for nonresidential <br />use (e.g., the rooms in a warehouse where a watch, <br />man lives), as well as in tents, caves, old railroad cars, <br />etc. <br /> <br />A housing unit is a house, an apartment, a group of <br />rooms, or a single rOOm occupied or intended for <br />occupancy as separate living quarters. Separate living <br />quarters are those in which the occupants do not live <br />and eat with any other persons in the structure and <br />which quarters have either (1) direct access from the <br />outside of the building or through a common hell or <br />(2) complete kitchen facilities for the exclusive use of <br />the occupants. The occupants may be a single family, <br />one person living alone, two or more families living <br />together, or any other group of related or non related <br />persons who share I iving arrangements (except as <br />described in the next paragraph on group quarters). <br />Both occupied and vacant housing units are included <br />in the housing inventory, except that mobile homes, <br />trailers, tents, etc., are included only if they are <br />occu pied. <br /> <br />Group quarters are living arrangements for institu- <br />tional inmates or for other groups containing five or <br />more persons not related to the person in charge. <br />Group quarters are located most frequently in institu. <br />tions, boarding houses, military barracks, collega <br />dormitories, fraternity end sorority houses, hospitals, <br />monasteries, convents, and ships. A house or epert. <br />ment is considered group quarters if it is shered by <br />the person in charge. and five or more persons <br />unrelated to him, or if there is no person in charge, <br />by six or more unrelated persons. I nformation on the <br />housing characteristics of group quarters is not <br />collected in the census. <br /> <br />Year.round housing units.-Data on housing charac. <br />teristics are limited to year-round hOUSing units-all <br />occupied units plus vacant units which are Intended <br />for year-round use-because it is difficult to obtain <br />reliable information for the remaining types of units, <br />i.e., units reported as vacant at the time of the census <br />and intended for seasonal occupancy or held for <br />migratory labor. <br /> <br />Occupied housing units,-A housing unit is classified <br />as occupied if a person or group of persons is living in <br />it at the time of enumeration or if the occupants are <br />only temporarily absent, for example, on vacation. <br />However, if the persons staying in the unit hove their <br />usual place of residence elsewhere, the unit is <br />classified as vacant <br />