View In:   ArcGIS Online Map Viewer

Name: Vulnerable Populations (by Age)

Display Field: Tract_1

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset comprises polygons of census tracts for San Diego County. A census tract is a geographic region defined for the purpose of taking a census. Usually these coincide with the limits of cities, towns or other administrative areas and several tracts commonly exist within a county. In unincorporated areas, these are often arbitrary, except for coinciding with political lines. Census tracts are subdivided into block groups and census blocks.</SPAN></P><P><SPAN>The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Census Blocks are statistical areas bounded on all sides by visible features, such as streets, roads, streams, and railroad tracks, and/or by nonvisible boundaries such as city, town, township, and county limits, and short line-of-sight extensions of streets and roads. Census blocks are relatively small in area; for example, a block in a city bounded by streets. However, census blocks in remote areas are often large and irregular and may even be many square miles in area. A common misunderstanding is that data users think census blocks are used geographically to build all other census geographic areas, rather all other census geographic areas are updated and then used as the primary constraints, along with roads and water features, to delineate the tabulation blocks. As a result, all 2020 Census blocks nest within every other 2020 Census geographic area, so that Census Bureau statistical data can be tabulated at the block level and aggregated up to the appropriate geographic areas. Census blocks cover all territory in the United States, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial census. A block may consist of one or more faces.</SPAN></P><P><SPAN>The Census Tracts dataset is based on the TIGER dataset and may be edited by SANDAG and further edited by SanGIS to reflect local boundary datasets. However, SanGIS edits the CENSUS_BLOCK layer and then derives the CENSUS_TRACT layer from the blocks.</SPAN></P></DIV></DIV></DIV>

Service Item Id: c60b8b4e43f84b48979fa7914c444f50

Copyright Text: SANDAG and SANGIS using data provided by the United States Census Bureau (TIGER).

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Supported Query Formats: JSON, geoJSON, PBF

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Supports Statistics: true

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Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

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Spatial Reference: 103008  (6426)  LatestVCSWkid(0)

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Labeling Info:

Advanced Query Capabilities:

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• TRACT ( type: esriFieldTypeDouble, alias: TRACT, editable: true, nullable: true, defaultValue: null, modelName: TRACT )
• Tract_1 ( type: esriFieldTypeString, alias: Tract, editable: true, nullable: true, length: 1073741822, defaultValue: null, modelName: Tract_1 )
• Trct ( type: esriFieldTypeInteger, alias: Trct, editable: true, nullable: true, defaultValue: null, modelName: Trct )
• Total_population ( type: esriFieldTypeInteger, alias: Total population, editable: true, nullable: true, defaultValue: null, modelName: Total_population )
• Under_5_years ( type: esriFieldTypeInteger, alias: Under 5 years, editable: true, nullable: true, defaultValue: null, modelName: Under_5_years )
• F5_to_9_years ( type: esriFieldTypeInteger, alias: 5 to 9 years, editable: true, nullable: true, defaultValue: null, modelName: F5_to_9_years )
• F10_to_14_years ( type: esriFieldTypeInteger, alias: 10 to 14 years, editable: true, nullable: true, defaultValue: null, modelName: F10_to_14_years )
• Under_15_years__Youth_ ( type: esriFieldTypeInteger, alias: Under 15 years (Youth), editable: true, nullable: true, defaultValue: null, modelName: Under_15_years__Youth_ )
• F65_years_and_over ( type: esriFieldTypeInteger, alias: 65 years and over, editable: true, nullable: true, defaultValue: null, modelName: F65_years_and_over )
• YouthSeniorPop ( type: esriFieldTypeInteger, alias: YouthSeniorPop, editable: true, nullable: true, defaultValue: null, modelName: YouthSeniorPop )
• PercentYouthSenior ( type: esriFieldTypeDouble, alias: PercentYouthSenior, editable: true, nullable: true, defaultValue: null, modelName: PercentYouthSenior )
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Templates:

• Name: Vulnerable Populations (by Age)
  Description:
  Prototype:
  PercentYouthSenior: null
  TRACT: null
  Tract_1: null
  Trct: null
  Total_population: null
  Under_5_years: null
  F5_to_9_years: null
  F10_to_14_years: null
  Under_15_years__Youth_: null
  F65_years_and_over: null
  YouthSeniorPop: null
  
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Child Resources:

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