Maine Census Blocks 2000 GeoLibrary

Identification Information:

Citation:

Citation Information:

Publication Date: 20050305

Title: Maine Census Blocks 2000 GeoLibrary

Geospatial Data Presentation Form: vector digital data

Description:

Abstract: BLKS00 contains Census 2000 Block boundaries and population by blocks for the state of Maine at 1:100,000 scale. Census Block boundaries are statistical subdivisions of counties for the reporting of decennial census data. The Census 2000 TIGER/Line Files are the primary source for this data set. BLKS00 is built to POLYGON topology and contains the attributes FIPSSTCO, COUNTY, COUSUB00, COUSUB00NA(ME), TRCT00, BLKGRP00, PLC00, PLC00NA(ME), BLK00, BLK00NUM, BLKNAME, STFIDBLK00, POP00, CENTAG, USDSTRCT03, SNDSTRCT03, and HSDSTRCT03. The item STFIDBLK00 is a calculated combination of these items that uniquely identifies a Census Block within the State of Maine. The item CENTAG was added for correct labeling and/or statistics where multiple polygons contain the same block number, as is the case in some coastal communities where islands are depicted. The numeric item POP00 was populated and proofed from the Census 2000 Redistricting Data (P.L. 94-171) Summary File. The item COUSUB00 contains the Federal Information Processing Standard (FIPS) code a single 5 character code field used by the Bureau of the Census to identify the Census County Division to which the block belongs. COUSUBNA has been added to improve convenience in labeling. Likewise TRCT00 (Tract), BLKGRP00 (Block Group), and PLC00 (Designated Place if applicable), and PLC00NA for Designated Place name labeling. All Census geographies, cross tabulated in the dataset, can be mapped using the ID included for each level, i.e. For Census County Subdivisions COUSUB00, Census Tracts STFIDTRCT00, Census Block Groups STFIDBLKGRP00, Census Designate Places PLC00 and Census Blocks STFIDBLK00. Unique-ids for each Census geographic unit can be used to relate or join these datasets to extended Census data files, counts, tabulations, and reference tables. For more information on related files that have been published at the Maine GIS Data Catalog see the "Tables" link at http://megis.maine.gov/catalog/

Purpose: BLKS00 was created to facilitate mapping, analysis, and use of Census 2000 data with other Maine GIS data layers. Other data layers for use with this Census geography data set will be published. Although Census boundaries represent real world features like rivers, lakes, railroads, political boundaries, etc., their primary purpose is for use in statistical analysis. As such, the features of the Census TIGER/Line Files from which this coverage was derived may not coincide with representations of these features drafted for other purposes or at other map scales.

Supplemental Information: CAUTION: BLOCK, BLOCK GROUP, TRACT numbers alone are not unique. The STFIDBLK00 is the unique reference for BLOCKS statewide. The item CENTAG applies only to multiple occurrences of STFIDBLK00. Beyond mapping, care must be taken to ensure referential integrity in relates and joins to the other IDs provided. There is often no direct 1:1 relationship between minor civil division boundaries and Census geographic units. The rural character of Maine, and especially northern Maine, requires the Census Bureau to report counts and tabulations over larger areas for statistical reasons and the Bureau of Census redefines these areas as population shifts. MCDCCD00 represents the closest correlation between Census geographic units and minor civil division boundaries. All other Census geographies represent areas either larger or smaller than town or township boundaries and often cross boundaries. In most cases additional analysis will be required to report Census counts and tabulations by town or township.

Status:

Progress: Complete

Maintenance and Update Frequency: None planned

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -71.167181

East Bounding Coordinate: -66.850067

North Bounding Coordinate: 47.459904

South Bounding Coordinate: 42.971362

Keywords:

Theme:

Theme Keyword Thesaurus: None

Theme Keyword: society

Theme Keyword: population

Theme Keyword: census blocks

Theme Keyword: counties

Theme Keyword: census geography

Theme Keyword: pattern

Theme Keyword: boundaries

Theme Keyword: fips

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories

Theme Keyword: boundaries

Theme Keyword: society

Place:

Place Keyword Thesaurus: None

Place Keyword: maine

Access Constraints: None

Use Constraints: Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS.

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Maine Office of Geographic Information Systems (MEGIS)

Contact Position: GIS Coordinator

Contact Address:

Address Type: mailing

Address: State House Station #145

City: Augusta

State or Province: Maine

Postal Code: 04333

Country: US

Contact Voice Telephone: 207-624-7700

Contact Electronic Mail Address: OIT.Customer-Support@maine.gov

Hours: 9 am to 5 pm EST

Contact Instructions: Monday through Friday

Data Set Credit: U.S. Department of Commerce (USDOC), Bureau of the Census (USCB), Maine Office of Geographic Information Systems (MEGIS) (comp., ed.)

Native Data Set Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.0.6491

Spatial Data Organization Information:

Direct Spatial Reference Method: Vector

Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: GT-polygon composed of chains

Point and Vector Object Count: 55226

Entity and Attribute Information:

Detailed Description:

Entity Type:

Entity Type Label: BLKS00

Entity Type Definition: polygon feature class

Entity Type Definition Source: Environmental Systems Research Institute, Inc, (ESRI)

Attribute:

Attribute Label: GlobalID

Attribute:

Attribute Label: CNTYCODE

Attribute:

Attribute Label: SHAPE

Attribute Definition: Feature geometry.

Attribute Definition Source: ESRI

Attribute Domain Values:

Unrepresentable Domain: Coordinates defining the features.

Attribute:

Attribute Label: STFIDBLKGRP00

Attribute Definition: The item STFIDBLKGRP00 is a calculated combination of state, county, census tract, and block group number (the items FIPSSTCO, TRCT00, BLKGRP00) that identifies the Census Block Group to which a BLOCK belongs.

Attribute:

Attribute Label: STFIDBLK00

Attribute Definition: The item STFIDBLK00 is a calculated combination of state, county, census tract, block group, and block number (the items FIPSSTCO, TRCT00, BLKGRP00, BLK00) that uniquely identifies a Census Block within the State of Maine. The STFIDBLK00 can be used to relate other data, available from the Census Bureau by Census Block.

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: POP00

Attribute Definition: population by Census Block (BLK00) from Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: PLC00NA

Attribute Definition: Census Designated Place name

Attribute Definition Source: Bureau of the Census Bureau, in cooperation with State officials and local census statistical areas committees

Attribute:

Attribute Label: PLC00

Attribute Definition: Place (FIPS)

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: SHAPE.AREA

Attribute:

Attribute Label: USDSTRCT03

Attribute Definition: Maine US Congressional District number

Attribute Definition Source: Office of the Secretary of State, US Congressional Districts for Maine established by apportionment July 2, 2003, Final Order Maine Supreme Judicial Court

Attribute:

Attribute Label: STFIDTRCT00

Attribute Definition: The item STFIDTRCT00 is a calculated combination of state, county, and census tract number (the items FIPSSTCO, TRCT00) that identifies the Census Tract to which a BLOCK belongs.

Attribute:

Attribute Label: BLK00

Attribute Definition: Census Block

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: OBJECTID

Attribute Definition: Internal feature number.

Attribute Definition Source: ESRI

Attribute Domain Values:

Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute Label: FIPSSTCO

Attribute Definition: A county identifier that consists of the three-digit Federal Information Processing Standard (FIPS) county code which represents each Maine county preceded by the number 23 which is the FIPS code for the State of Maine

Attribute Definition Source: FIPSPUB5-2 CODES FOR THE IDENTIFICATION OF THE STATES ... and FIPSPUB6-4 COUNTIES AND EQUIVALENT ENTITIES OF THE UNITED STATES ... , Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: COUSUB00

Attribute Definition: Federal Information Processing Standard (FIPS) code a single 5 character code field used by the Bureau of the Census to identify Minor Civil Divisions(MCDs)/Census County Divisions (CCDs). MCDs are legally defined county subdivisions such as towns and townships. In 21 states [including Maine] where MCDs do not exist or are not adequate for reporting subcounty statistics, the Census Bureau, in cooperation with the state and local officials, delineates county subdivisions known as Census County Divisions (CCDs). The COUSUB00 identifies the Census County Division to which a BLOCK belongs.

Attribute Definition Source: FIPS55-3 CODES FOR NAMED POPULATED PLACES, PRIMARY COUNTY DIVISIONS... ,Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: COUNTY

Attribute Definition: Maine county name

Attribute:

Attribute Label: CENTAG

Attribute Definition: item used to select a single feature for labeling and statistical purposes

Attribute:

Attribute Label: LAND

Attribute Definition: identifies Census Blocks that represent land and non-land areas

Attribute:

Attribute Label: COUSUB00NA

Attribute Definition: Bureau of the Census name, for statistical purposes, of each CCD based on a place, county, or other well-known local name that identifies its location (Each unorganized territory is given a descriptive name, followed by the designation "unorg".)

Attribute Definition Source: Bureau of the Census Bureau, in cooperation with State officials and local census statistical areas committees

Attribute:

Attribute Label: HSDSTRCT03

Attribute Definition: Maine State House of Representatives district number

Attribute Definition Source: Office of the Secretary of State, Maine House of Representative Districts established by the Maine Legislature. Legislation, Chapter 289 of the Public Laws of 2003, was enacted by the 121st Legislature and signed by the Governor on May 23, 2003

Attribute:

Attribute Label: BLKNAME

Attribute Definition: Census Block (Title case)

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: BLKGRP00

Attribute Definition: Block Group

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: TRCT00

Attribute Definition: Census Tract

Attribute Definition Source: Census 2000 Redistricting Data (P.L.94-171) Summary File

Attribute:

Attribute Label: SHAPE.LEN

Attribute:

Attribute Label: SNDSTRCT03

Attribute Definition: Maine State Senate district number

Attribute Definition Source: Office of the Secretary of State, Maine State Senate Districts established by apportionment July 2, 2003, Final Order Maine Supreme Judicial Court

Overview Description:

Entity and Attribute Overview:

BLKS00 was created from Census 2000 TIGER/Line File data and built to POLYGON topology. The coverage contains the attributes FIPSSTCO, COUNTY, COUSUB00, COUSUB00NA TRCT00, BLKGRP00, PLC00, PLC00NA, BLK00, BLK00NUM, BLKNAME, STFIDBLK00, POP00, CENTAG, USDSTRCT03, SNDSTRCT03, HSDSTRCT03. The item STFIDBLK00 is a calculated combination of these items that uniquely identifies a Census Block within the State of Maine. The item CENTAG may be used to select a single feature for labeling and statistical purposes. The item COUSUB00 contains the Federal Information Processing Standard (FIPS) code a single 5 character code field used by the Bureau of the Census to identify the Census County Division to which the block belongs. Likewise TRCT00 (Tract), BLKGRP00 (Block Group), and PLC00 (Designated Place if applicable). All Census geographies, cross tabulated in the dataset, can be mapped using the ID included for each level of census geography, i.e. for Census County Subdivisions COUSUB00, Census Tracts STFIDTRCT00, Census Block Groups STFIDBLKGRP00, Census Designate Places PLC00, Census Blocks STFIDBLK00. CAUTION: care must be taken to ensure referential integrity in relates and joins to IDs provided.

Entity and Attribute Detail Citation: The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.

Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Maine Office of Geographic Information Systems (MEGIS)

Contact Position: GIS Coordinator

Contact Address:

Address Type: mailing

Address: State House Station #145

City: Augusta

State or Province: Maine

Postal Code: 04333

Country: US

Contact Voice Telephone: 207-624-7700

Contact Electronic Mail Address: OIT.Customer-Support@maine.gov

Hours: 9 am to 5 pm EST

Contact Instructions: Monday through Friday

Distribution Liability: Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: SDE Feature Class

Metadata Reference Information:

Metadata Date: 20171016

Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Maine Office of Geographic Information Systems (MEGIS)

Contact Position: GIS Coordinator

Contact Address:

Address Type: mailing

Address: State House Station #145

City: Augusta

State or Province: Maine

Postal Code: 04333

Country: US

Contact Voice Telephone: 207-624-7700

Contact Electronic Mail Address: OIT.Customer-Support@maine.gov

Hours: 9 am to 5 pm EST

Contact Instructions: Monday through Friday

Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata Standard Version: FGDC-STD-001-1998

Metadata Time Convention: local time