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The U.S. Census Bureau is the official source for U.S. export and import statistics and regulations governing the reporting of exports from the U.S.
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The Geographic Support System Initiative will integrate improved address coverage, spatial feature updates, and enhanced quality assessment and measurement.
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The Census Bureau's Director writes on how we measure America's people, places and economy.
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School district estimates posted on this site were revised May 16, 2003, to reflect corrected geographic boundaries for school districts in the following 14 states: Iowa, Kansas, Massachusetts, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, Oklahoma, Oregon, South Dakota, Texas, and Vermont. Only these states were affected by the revision; the date stamp in the FTP directory, and the date tag within the data files, identify the updated files. This link provides the list of school districts with a population or poverty estimate change.
Additionally, files for three states were updated for corrections to the following district name or ID number : North Carolina (37 37099 Eastern Cherokee Reservation Schools), Pennsylvania (42 15150 Meyersdale Area School District), and Virginia (51 04020 Williamsburg-James City County Public Schools). The population and poverty estimates remain unchanged.
School district population and poverty estimates for income year 1999 were initially released on this site in December, 2002. The school-age population figures in all files were replaced on February 27, 2003. The initial release contained only school-age children in families, instead of all school-age children. On average, the revised counts are larger than those they replace by 3 percent. The February 27, 2003 revision did not affect either the total population or the estimated number of poor school-age children related to the householder.
I. File Organization: The files in the FTP directory contain estimates of population and poverty. The school districts for which we have estimates were identified in the 2001 school district mapping project's survey which asked for all school districts as of July 15, 2001. Thus the 1999 estimates reflect poverty in 1999 of the population in 2000 for school district boundaries in the 2001-2002 school year. There is one file for each of the states, the District of Columbia, and the entire United States. Each file contains the FIPS state code, Department of Education Common Core of Data (CCD) ID numbers, District names, the total population, population of school-age children, and estimated number of poor school-age children related to the head of the household. II. File Names Two kinds of files are located here: 1) USSD99.dat (A large file containing the estimates for every school district in the Nation) 2) sd99_[STATE].dat (Smaller files containing estimates for every school district in an individual state) where [STATE] = standard two-letter postal abbreviations. III. Record Layout for Files Position Variable 1- 2 FIPS State code 4- 8 CCD District ID 10-74 District Name 76-83 Total Population 85-92 Population of Relevant Children 5 to 17 years of Age 94-101 Estimated Number of Relevant Poor Children 5 to 17 years of age who are Related to the Head of Household 103-122 A tag indicating the file name and date of creation