All Layers and Tables (Census_Block_Groups__

Layers:

Layer: Census Block Groups - 2020 (2)

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The United States Census Bureau reports data by various political and statistical geographic units. The top-to-bottom relationship shown here represents a statistical hierarchy of containment: the nation contains states, states contain counties, counties contain tracts, tracts contain block groups, and block groups contain blocks. Many other non-nesting reporting units are not shown.

Census tracts are statistical subdivisions of a county that aim to have roughly 4,000 inhabitants. Tract boundaries are usually visible features, such as roads or rivers, but they can also follow the boundaries of national parks, military reservations, or American Indian reservations. Tracts are designed to be fairly homogeneous with respect to demographic and economic conditions when they are first established. When a census tract experiences growth and the internal population grows beyond 8,000 persons, the tract is split up. This review and revision process is conducted every decade with collaboration from local planning agencies.

A block group is a subdivision of a census tract and contains a cluster of blocks. Block groups usually have between 250 and 550 housing units.

A census block is the smallest geographic census unit. Blocks can be bounded by visible features—such as streets—or by invisible boundaries, such as city limits. Census blocks are often the same as ordinary city blocks. Census blocks change every decade.

You can review the data directly from the US Census here.

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Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
STATEFP (type: esriFieldTypeString, alias: State FIPS Code, SQL Type: sqlTypeOther, length: 2, nullable: true, editable: true)
COUNTYFP (type: esriFieldTypeString, alias: County FIPS Code, SQL Type: sqlTypeOther, length: 3, nullable: true, editable: true)
TRACTCE (type: esriFieldTypeString, alias: Census Tract Code, SQL Type: sqlTypeOther, length: 6, nullable: true, editable: true)
BLKGRPCE (type: esriFieldTypeString, alias: Current Block Group Number, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true)
GEOID (type: esriFieldTypeString, alias: GEOID Code, SQL Type: sqlTypeOther, length: 12, nullable: true, editable: true)
NAMELSAD (type: esriFieldTypeString, alias: Legal/Statistical Area Description, SQL Type: sqlTypeOther, length: 13, nullable: true, editable: true)
MTFCC (type: esriFieldTypeString, alias: MAR/TIGER Feature Class Code, SQL Type: sqlTypeOther, length: 5, nullable: true, editable: true, Coded Values: [G5020: Census Tract], [G5030: Block Group], [G5040: Tabulation Block], ... 8 more ...)
FUNCSTAT (type: esriFieldTypeString, alias: Functional Status, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true, Coded Values: [A: Active government providing primary general-purpose functions], [B: Active government that is partially consolidated with another government but with separate officials providing primary general-purpose functions], [C: Active government consolidated with another government with a single set of officials], ... 9 more ...)
ALAND (type: esriFieldTypeDouble, alias: Area - Land, SQL Type: sqlTypeOther, nullable: true, editable: true)
AWATER (type: esriFieldTypeDouble, alias: Area - Water, SQL Type: sqlTypeOther, nullable: true, editable: true)
INTPTLAT (type: esriFieldTypeString, alias: Latitude, SQL Type: sqlTypeOther, length: 11, nullable: true, editable: true)
INTPTLON (type: esriFieldTypeString, alias: Longitude, SQL Type: sqlTypeOther, length: 12, nullable: true, editable: true)
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Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

Field Name: MTFCC
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Field Name: FUNCSTAT
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BLKGRPCE: 1

Field Name: MTFCC
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Field Name: FUNCSTAT
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BLKGRPCE: 2

Field Name: MTFCC
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Field Name: FUNCSTAT
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BLKGRPCE: 3

Field Name: MTFCC
Inherited
Field Name: FUNCSTAT
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BLKGRPCE: 4

Field Name: MTFCC
Inherited
Field Name: FUNCSTAT
Inherited

BLKGRPCE: 5

Field Name: MTFCC
Inherited
Field Name: FUNCSTAT
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BLKGRPCE: 6

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All Layers and Tables (Census_Block_Groups___2020)

Layers:

Layer: Census Block Groups - 2020 (2)