View In:   ArcGIS Online Map Viewer

Name: Census Block Broadband Coverage (2025)

Display Field: census_block

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: A census block is the smallest geographic unit used by the United States Census Bureau for tabulation of 100-percent data (data collected from all houses, rather than a sample of houses). The number of blocks in the United States, including Puerto Rico, for the 2010 Census was 11,155,486.Census blocks are grouped into block groups, which are grouped into census tracts. There are on average about 39 blocks per block group. Blocks typically have a four-digit number; the first number indicates which block group the block is in. For example, census block 3019 would be in block group 3.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 of a census block varies greatly. As of the 2010 census, there were 4,871,270 blocks with a reported population of zero, while a block that is entirely occupied by an apartment complex might have several hundred inhabitants.Census blocks covering the entire country were introduced with the 1990 census. Before that, back to the 1940 census, only selected areas were divided into blocks.Census blocks are maintained within the Administration Feature and is dissolved out weekly.Administration is a polygon feature consisting of the smallest statistical areas bounded by visible features such as roads, streams, railroad tracks, and mountain ridges, as well as by nonvisible boundaries such as jurisdictional limits, school district, public safety boundaries, voting precincts, and census blocks. This methodology allows for single stream editing to move coincidental boundaries across many aggregate datasets simultaneously. Administration is maintained though an ArcGIS topology class in conjunction with County Parcels and Zoning. The topology prevents self-intersection and gaps, while ensuring complete coverage amongst the participating features.

Service Item Id: a2966ccbcebb4e918526426051c306ed

Copyright Text: Roanoke County, United States Census Bureau

Default Visibility: true

MaxRecordCount: 2000

MaxSelectionCount: 0

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

Extent:

XMin: 1.0970670040094912E7
YMin: 3567583.1099647284
XMax: 1.1093306670149252E7
YMax: 3681188.220024392
Spatial Reference: 102747  (2284)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: percentcoverage
Min. Value: 0.0
ClassBreakInfos:
• Class Maximum Value: 20
  Label: 0- 20
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [247, 251, 255, 255]
  Outline:
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• Class Maximum Value: 40
  Label: 21 - 40
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  Outline:
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• Class Maximum Value: 60
  Label: 41 - 60
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  Label: 81 - 100
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  Outline:
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  Width: 1
Transparency: 39
Labeling Info:
Label Placement: esriServerPolygonPlacementAlwaysHorizontal
Label Expression: N/A
Use Coded Values: true
Symbol:
Color: [0, 0, 0, 255]
Background Color: N/A
Outline Color: N/A
Vertical Alignment: bottom
Horizontal Alignment: left
Right to Left: false
Angle: 0
XOffset: 0
YOffset: 0
Size: 10
Font Family: Tahoma
Font Style: normal
Font Weight: normal
Font Decoration: none

Min. Scale: 30000.0
Max. Scale: NaN

Feature Draw Order:

N/A

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 )
• census_block ( modelName: CENSUS, nullable: true, editable: true, defaultValue: null, length: 20, alias: Census Block, type: esriFieldTypeString )
• census_tract ( modelName: Census_Tract, nullable: true, editable: true, defaultValue: null, length: 15, alias: Census Tract, type: esriFieldTypeString )
• census_block_group ( modelName: Census_Block_Group, nullable: true, editable: true, defaultValue: null, length: 15, alias: Census Block Group, type: esriFieldTypeString )
• addresspt_count ( modelName: addresspt_count, nullable: true, editable: true, defaultValue: null, alias: Address Point Count, type: esriFieldTypeInteger )
• broadbandpointcount ( modelName: broadbandpointcount, nullable: true, editable: true, defaultValue: null, alias: Broadband Point Count, type: esriFieldTypeInteger )
• percentcoverage ( modelName: percentcoverage, nullable: true, editable: true, defaultValue: null, alias: PercentCoverage, type: esriFieldTypeDouble )
• merge_src ( modelName: merge_src, nullable: true, editable: true, defaultValue: null, length: 255, alias: MERGE_SRC, type: esriFieldTypeString )
• 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: 0.000000 - 20.000000
  Description:
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  merge_src: null
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  broadbandpointcount: null
  
  Drawing Tool: esriFeatureEditToolPolygon
• Name: 20.000001 - 40.000000
  Description:
  Prototype:
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  percentcoverage: 30
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  Drawing Tool: esriFeatureEditToolPolygon
• Name: 40.000001 - 60.000000
  Description:
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  Drawing Tool: esriFeatureEditToolPolygon
• Name: 60.000001 - 80.000000
  Description:
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  Drawing Tool: esriFeatureEditToolPolygon
• Name: 80.000001 - 100.000000
  Description:
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  merge_src: null
  percentcoverage: 90
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  addresspt_count: null
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  broadbandpointcount: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:

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