floating population
The floating population are people who reside in a given population for a certain amount of time and for various reasons, but are not generally considered part of the official census count.{{cite news|last=Francesco Sisci|title=China's Achilles' heel: The 'floating population'|url=http://www.atimes.com/atimes/China/EE17Ad01.html|archive-url=https://web.archive.org/web/20030601091159/http://www.atimes.com/atimes/China/EE17Ad01.html|url-status=unfit|archive-date=June 1, 2003|newspaper=Asia Times Online Co, Ltd.|date=May 17, 2003}}
A population is usually broken down into two categories—the residents, who permanently stay in an area for a considerable amount of time and are part of the official population count,{{cite book|last=Doris Fischer|title=China im Zeichen von Globalisierung und Entwicklung|year=2002|publisher=Duncker & Humblot|pages=100|isbn=9783428510320|url=https://books.google.com/books?id=qEIOIgl5GXUC&q=floating+population+definition&pg=PA54}} and the floating types, who are in the area but do not live there permanently and are not considered part of the official census count.{{cite web|title=Floating|url=http://www.encyclopedia.com/doc/1O999-floating.html|publisher=The Oxford Pocket Dictionary of Current English (2009)|access-date=31 October 2011}}
The residing population of a city can be sub-classified into two groups, one who permanently resides in a city for a considerably long duration of time like ten to fifteen years, and the others are those, like hostel students and transferable government servants, who might live for two to three years in a given area, as per their requirements, but are replaced by an equal number of new population for the same purpose after their departure.{{cite book|last=Shinichi Ichimura|title=Decentralization policies in Asian development|year=2009|publisher=World Scientific|pages=414|isbn=9789812818645|url=https://books.google.com/books?id=FS_C2RSKLPIC&q=floating+population+definition&pg=PA91}} Thus, at any given time the number of people under this category remains more or less the same. The floating population, on the other hand, of a city consists of two types.{{cite book|last=Xizhe Peng|title=The changing population of China|year=2000|publisher=Wiley-Blackwell|pages=180|isbn=9780631201922|url=https://books.google.com/books?id=iWiyiohL8_cC&q=floating+population+definition&pg=PA180}} The first category is those who visit a place regularly but do not stay in that area permanently or long enough to be considered official, like any person working in a city for a short time job. The second type consists of visitors or guests who might live for a small span of time, but their time of stay and their next visit are not predictable, like tourists and seasonal visitors.{{cite web|title=4.3 ANALYSIS OF FLOATING POPULATION|url=http://www.dudh.gov.bt/gelephu/part4/4.3.htm|publisher=Department of Urban Development & Engineering Services|access-date=31 October 2011|archive-url=https://web.archive.org/web/20120202103650/http://www.dudh.gov.bt/gelephu/part4/4.3.htm|archive-date=2 February 2012|url-status=dead}}