{ "currentVersion": 10.71, "id": 2, "name": "Archived Census Tracts 2010", "type": "Feature Layer", "description": "The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. Census tract boundaries generally follow visible and identifiable features. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances, a census tract may consist of noncontiguous areas. ", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102100, "latestWkid": 3857 }, "copyrightText": "MD iMap, MDP, Karen Maisenhalder, karen.maisenhalder@maryland.gov, U.S. Census", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "drawingInfo": { "renderer": { "type": "simple", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 0, 0, 0, 0 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 255, 170, 0, 255 ], "width": 0.4 } }, "label": "", "description": "" }, "transparency": 0, "labelingInfo": null }, "defaultVisibility": true, "extent": { "xmin": -8848524.8337, "ymin": 4567010.418899998, "xmax": -8354430.1568, "ymax": 4825776.0198, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "CT2010", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID_1", "type": "esriFieldTypeOID", "alias": "GIS Object ID", "domain": null }, { "name": "FID_tl_201", "type": "esriFieldTypeDouble", "alias": "FID_tl_201", "domain": null }, { "name": "ALAND10", "type": "esriFieldTypeDouble", "alias": "Census Land Area (m)", "domain": null }, { "name": "AWATER10", "type": "esriFieldTypeDouble", "alias": "Census Water Area (m)", "domain": null }, { "name": "CNTY2010", "type": "esriFieldTypeString", "alias": "Full FIPS County Code", "length": 5, "domain": null }, { "name": "CT10", "type": "esriFieldTypeString", "alias": "Census Tract ID", "length": 6, "domain": null }, { "name": "CT2010", "type": "esriFieldTypeString", "alias": "Full Census Tract ID", "length": 16, "domain": null }, { "name": "GEODESC", "type": "esriFieldTypeString", "alias": "GEODESC", "length": 7, "domain": null }, { "name": "ACRES", "type": "esriFieldTypeDouble", "alias": "Acres", "domain": null }, { "name": "SQ_MILES", "type": "esriFieldTypeDouble", "alias": "Square Miles", "domain": null }, { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "GIS Shape", "domain": null }, { "name": "Shape.STArea()", "type": "esriFieldTypeDouble", "alias": "Shape.STArea()", "domain": null }, { "name": "Shape.STLength()", "type": "esriFieldTypeDouble", "alias": "Shape.STLength()", "domain": null } ], "geometryField": { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "GIS Shape" }, "indexes": [ { "name": "R266_pk", "fields": "OBJECTID_1", "isAscending": true, "isUnique": true, "description": "" }, { "name": "S207_idx", "fields": "Shape", "isAscending": true, "isUnique": true, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 1000, "supportsStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsHavingClause": true, "supportsCountDistinct": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsPagination": true, "supportsTrueCurve": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true }, "supportsDatumTransformation": true, "supportsCoordinatesQuantization": true }