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and housing counts, but a wide variety of socioeconomic characteristics. These gridded data sets transform irregularly shaped census block and block group boundaries into a regular surface \u2013 a raster grid \u2013 for faster and easier analysis. Data sets are available for 1990, 2000 and 2010.", "Subject": "To provide raster data sets of demographic data. ", "Category": "", "AntialiasingMode": "None", "TextAntialiasingMode": "Force", "Keywords": "population; usgrid-summary-file1-2010" }, "capabilities": "Map,Query,Data", "supportedQueryFormats": "JSON, AMF, geoJSON", "exportTilesAllowed": false, "supportsDatumTransformation": true, "maxRecordCount": 1000, "maxImageHeight": 4096, "maxImageWidth": 4096, "supportedExtensions": "WMSServer" }