Name: Census Tracts

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: e1448789d21347209eab074deb33dbd1

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

Default Visibility: false

MaxRecordCount: 2000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

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YMin: 1992674.3506749205
XMax: 6269936.591639052
YMax: 2029882.9022444654
Spatial Reference: 103008  (6426)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
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Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
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Supports Pagination: true
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Supports Query With Distance: true
Supports Sql Expression: true
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Supports Percentile Statistics: true
Supports Having Clause: true
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Supports Query Analytic: true
Supports Query With Current User: true

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape_Area )
• TRACT ( type: esriFieldTypeDouble, alias: TRACT )
• Tract_1 ( type: esriFieldTypeString, alias: Tract, length: 1073741822 )
• Trct ( type: esriFieldTypeInteger, alias: Trct )
• Total_population ( type: esriFieldTypeInteger, alias: Total Pop )
• Under_5_years ( type: esriFieldTypeInteger, alias: Pop under 5 )
• F5_to_9_years ( type: esriFieldTypeInteger, alias: Pop 5 to 9 )
• F10_to_14_years ( type: esriFieldTypeInteger, alias: Pop 10 to 14 )
• Under_15_years__Youth_ ( type: esriFieldTypeInteger, alias: Youth Pop (under 15) )
• F65_years_and_over ( type: esriFieldTypeInteger, alias: Senior Pop (65 and over) )
• YouthSeniorPop ( type: esriFieldTypeInteger, alias: Youth/Senior Pop )
• PercentYouthSenior ( type: esriFieldTypeDouble, alias: % Youth/Senior )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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