Layer: MA Census Block Groups (ID:16)

View In: Map Viewer

Name: MA Census Block Groups

Display Field: NAMELSAD20

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 2020 Census block groups are clusters of blocks within the same census tract that have the same first digit of their 4-digit census block number; that first digit is the block group number. Block group numbers 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. A block group usually covers a contiguous area. Each census tract contains one or more block groups and block groups have unique numbers within a 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 delineated for the 2020 Census generally contain 600 to 3,000 people.

Copyright Text: US Census Bureau 2020 TIGER/Line data from MAF/TIGER database (MTDB). Massachusetts Bureau of Geographic Information (MassGIS), Executive Office of Technology Services and Security (EOTSS)

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Global ID Field:

Type ID Field: EJ_Status

Fields:

FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
STATEFP20 (type: esriFieldTypeString, alias: STATEFP20, SQL Type: sqlTypeOther, length: 2, nullable: true, editable: true)
COUNTYFP20 (type: esriFieldTypeString, alias: COUNTYFP20, SQL Type: sqlTypeOther, length: 3, nullable: true, editable: true)
TRACTCE20 (type: esriFieldTypeString, alias: TRACTCE20, SQL Type: sqlTypeOther, length: 6, nullable: true, editable: true)
BLKGRPCE20 (type: esriFieldTypeString, alias: BLKGRPCE20, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true)
GEOID20 (type: esriFieldTypeString, alias: GEOID20, SQL Type: sqlTypeOther, length: 12, nullable: true, editable: true)
NAMELSAD20 (type: esriFieldTypeString, alias: NAMELSAD20, SQL Type: sqlTypeOther, length: 13, nullable: true, editable: true)
MTFCC20 (type: esriFieldTypeString, alias: MTFCC20, SQL Type: sqlTypeOther, length: 5, nullable: true, editable: true)
ALAND20 (type: esriFieldTypeDouble, alias: ALAND20, SQL Type: sqlTypeOther, nullable: true, editable: true)
AWATER20 (type: esriFieldTypeDouble, alias: AWATER20, SQL Type: sqlTypeOther, nullable: true, editable: true)
INTPTLAT20 (type: esriFieldTypeString, alias: INTPTLAT20, SQL Type: sqlTypeOther, length: 11, nullable: true, editable: true)
INTPTLON20 (type: esriFieldTypeString, alias: INTPTLON20, SQL Type: sqlTypeOther, length: 12, nullable: true, editable: true)
AREA_SQFT (type: esriFieldTypeDouble, alias: AREA_SQFT, SQL Type: sqlTypeOther, nullable: true, editable: true)
AREA_ACRES (type: esriFieldTypeDouble, alias: AREA_ACRES, SQL Type: sqlTypeOther, nullable: true, editable: true)
TRACT20 (type: esriFieldTypeString, alias: TRACT20, SQL Type: sqlTypeOther, length: 11, nullable: true, editable: true)
HOUSING20 (type: esriFieldTypeInteger, alias: HOUSING20, SQL Type: sqlTypeOther, nullable: true, editable: true)
POP20 (type: esriFieldTypeInteger, alias: POP20, SQL Type: sqlTypeOther, nullable: true, editable: true)
BLK20_CNT (type: esriFieldTypeInteger, alias: BLK20_CNT, SQL Type: sqlTypeOther, nullable: true, editable: true)
EJ_Status (type: esriFieldTypeString, alias: EJ_Status, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

EJ_Status: No

EJ_Status: Yes

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 12/9/2025 6:30:03 PM

Schema Last Edit Date: 12/9/2025 6:30:03 PM

Data Last Edit Date: 12/9/2025 6:30:03 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat