View In:   ArcGIS Online Map Viewer

Name: US Census Block Groups 2020

Display Field: NAMELSAD

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Standard block groups are clusters of blocks within the same census tract that have the same first digit of their 4-character census block number (e.g., Blocks 3001, 3002, 3003 to 3999 in census tract 1210.02 belong to block group 3). Current block groups do not always maintain these same block number to block group relationships due to boundary and feature changes that occur throughout the decade. For example, block 3001 might move due to a change in the census tract boundary. Even if the block is no longer in block group 3, the block number (3001) will not change. However, the GEOID for that block, identifying block group 3, would remain the same in the attribute information in the TIGER/Line Shapefiles because block GEOIDs are always built using the decennial geographic codes.Block groups delineated for the 2020 Census generally contain 600 to 3,000 people. Local participants delineated most block groups as part of the Census Bureau's PSAP. The Census Bureau delineated block groups only where a local or tribal government declined to participate or where the Census Bureau could not identify a potential local participant. A block group usually covers a contiguous area. Each census tract contains one or more block groupsand block groups have unique numbers within census tract. Within the standard census geographic hierarchy, block groups never cross county or census tract boundaries, but may cross the boundaries of county subdivisions, places, urban areas, voting districts, congressional districts, and AIANNH areas. Block groups have a valid range of zero (0) through nine (9). Block groups beginning with a zero generally are in coastal and Great Lakes water and territorial seas. Rather than extending a census tract boundary into the Great Lakes or out to the 3-mile territorial sea limit, the Census Bureau delineated some census tract boundaries along the shoreline or just offshore.

Copyright Text: 2021 TIGER - Line Shapefiles 2021 TIGER - Line Shapefiles Technical Documentation Prepared by the US Census Bureau, 2021

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: 6096181.634207636
YMin: 1788690.62667723
XMax: 6461636.062746137
YMax: 2074093.4426814765
Spatial Reference: 103004  (6418)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [226, 204, 252, 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: true
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: false
Supports Query With LOD Spatial Reference: false
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:

• GEOID ( type: esriFieldTypeString, alias: GEOID, editable: true, nullable: true, length: 12, defaultValue: null, modelName: GEOID )
• NAMELSAD ( type: esriFieldTypeString, alias: NAMELSAD, editable: true, nullable: true, length: 13, defaultValue: null, modelName: NAMELSAD )
• ALAND ( type: esriFieldTypeDouble, alias: ALAND, editable: true, nullable: true, defaultValue: null, modelName: ALAND )
• AWATER ( type: esriFieldTypeDouble, alias: AWATER, editable: true, nullable: true, defaultValue: null, modelName: AWATER )
• INTPTLAT ( type: esriFieldTypeString, alias: INTPTLAT, editable: true, nullable: true, length: 11, defaultValue: null, modelName: INTPTLAT )
• INTPTLON ( type: esriFieldTypeString, alias: INTPTLON, editable: true, nullable: true, length: 12, defaultValue: null, modelName: INTPTLON )
• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• Shape__Area ( type: esriFieldTypeDouble, alias: SHAPE.STArea(), editable: false, nullable: true, defaultValue: null, modelName: SHAPE.STArea(), required: true )
• Shape__Length ( type: esriFieldTypeDouble, alias: SHAPE.STLength(), editable: false, nullable: true, defaultValue: null, modelName: SHAPE.STLength(), required: true )

Templates:

• Name: US Census Block Groups 2020
  Description:
  Prototype:
  INTPTLON: null
  GEOID: null
  NAMELSAD: null
  ALAND: null
  AWATER: null
  INTPTLAT: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query,Extract

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Analytic   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata