View In:   ArcGIS Online Map Viewer

Name: Census_Blocks_2020

Display Field: block

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset comprises 2020 census blocks as polygons for the County of San Diego. A census block is the smallest geographic unit used by the United States Census Bureau for the tabulation of 100-percent data (data collected from all houses rather than a sample of houses). Census blocks are grouped into block groups, which are grouped into census tracts. There are on average about 39 blocks per block group. Blocks are typically bounded by streets, roads or creeks. In cities, a census block may correspond to a city block, but in rural areas where there are fewer roads, blocks may be limited by other features. The population by census blocks varies greatly.Topologically Integrated Geographic Encoding and Referencing (TIGER) is a format used by the US Census Bureau to describe land attributes such as roads, buildings, rivers, and lakes, as well as areas such as census tracts. TIGER was developed to support and improve the Census Bureau's process of taking the Decennial Census. 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.TIGER data was used as the basis for this Census Blocks dataset, which was then edited by SANDAG, and then further edited by SanGIS. TIGER blocks were adjusted to match local GIS data including parcels, municipal boundaries, and roads. Some blocks were merged with adjacent blocks. The ocean blocks were removed.

Service Item Id: b5bca515746c4d8381075cb1f5b1fa2c

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

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Extent:

XMin: 6150755.8223808855
YMin: 1775304.094061643
XMax: 6613431.712972134
YMax: 2129759.999977812
Spatial Reference: 102646  (2230)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [237, 252, 209, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: true
Supports Binning LOD: true
Supports Query With LOD Spatial Reference: true
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( nullable: false, defaultValue: null, editable: false, length: 4, type: esriFieldTypeOID, modelName: objectid, alias: OBJECTID )
• block ( modelName: BLOCK, nullable: true, editable: true, defaultValue: null, alias: BLOCK, type: esriFieldTypeSmallInteger )
• tract ( modelName: tract, nullable: true, editable: true, defaultValue: null, alias: TRACT, type: esriFieldTypeDouble )
• globalid ( nullable: false, editable: false, defaultValue: null, length: 38, type: esriFieldTypeGlobalID, modelName: globalid, alias: globalid )
• SHAPE__Length ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Length, type: esriFieldTypeDouble )
• SHAPE__Area ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Area, type: esriFieldTypeDouble )

Templates:

• Name: Census_Blocks_2020
  Description:
  Prototype:
  tract: null
  block: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query,Sync,Extract

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: true

Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Attachments   Query Analytic   Query Top Features   Query Bins   Append   Validate SQL   Generate Renderer   Return Updates   Metadata   Update Metadata