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 "description": "What is unique about LA County\u2019s data?It is clipped to the ocean boundary. Raw Census data includes a 3 mile buffer into the ocean, which impacts cartography.IMPORTANT! It has been updated to the 2012 Census Geography Update, which merged Tracts 1370.00 and 9304.01 into the combined tract 1370.00. So the CT10 field actually reflects the 2012 Census update, which is used for all population products 2012 and later.How was this data created?This data was downloaded from Census Bureau website: http://www.census.gov/cgi-bin/geo/shapefiles2010/file-download and clipped to the County Boundary using ESRI\u2019s ArcGIS Desktop. Two new fields were added in census tract data \u2013 area in square feet and shape length in feet. This dataset has unique identifier field \u201cGEOID10\u201d for each record and the census tract number fields \u201cCT10\u201d and \u201cLABEL\u201d (6-digit number and 6-digit number with decimal point, respectively).",
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