Demographic Trends (1970-2010) for Coastal Geographies
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The Demographic Trends (1970-2010) were derived from Census Block Group Data for 13 different coastal geographies. For a full listing of the geographies available, see: http://www.coast.noaa.gov/htdata/SocioEconomic/DemographicTrends/DemographicTrends_DataDescription.pdf. The land area reported in the county and state file are the 2010 land areas reported in the attribute table of the shapefil...
本数据集的人口趋势（1970-2010年）系根据13个不同沿海地理区域的普查区块组数据推导而来。欲获取可用的地理区域完整列表，请参阅：http://www.coast.noaa.gov/htdata/SocioEconomic/DemographicTrends/DemographicTrends_DataDescription.pdf。县和州文件中报告的土地面积系2010年在要素表的属性中记录的面积...
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