Metadata for Montana Census Blocks with Population Data, 2010 Metadata for Montana Census Blocks with Population Data, 2010

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Identification Information:

Citation:

Originator:

U.S. Department of Commerce, U.S. Census Bureau, Geography Division

Originator: Montana State Library

Publication date: 2011

Title: Montana Census Blocks with Population Data, 2010

Edition: 2010

Publication place: Helena, MT
Publisher: Montana State Library

Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Census/cblock2010.zip

Larger Work Citation:

Title: Montana State Library Census Data Collection, 1990-2010
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={77211e26-cfa9-4a7b-b8f8-09d567c1d131}

Abstract:

Montana Census Blocks for the 2010 Census, with a subset of population data from the PL94-171 redistricting database.

The Census Block boundary TIGER/Line Shapefiles are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB).

Census Blocks are statistical areas bounded on all sides by visible features, such as streets, roads, streams, and railroad tracks, and/or by nonvisible boundaries such as city, town, township, and county limits, and short line-of-sight extensions of streets and roads. Census blocks are relatively small in area; for example, a block in a city bounded by streets. However, census blocks in remote areas are often large and irregular and may even be many square miles in area.

A common misunderstanding is that data users think census blocks are used geographically to build all other census geographic areas, rather all other census geographic areas are updated and then used as the primary constraints, along with roads and water features, to delineate the tabulation blocks. As a result, all 2010 Census blocks nest within every other 2010 Census geographic area, so that Census Bureau statistical data can be tabulated at the block level and aggregated up to the appropriate geographic areas. Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial census.

Time period of content:

Beginning date: 01/2010
Ending date: 07/2010
Currentness reference: publication date

Status:

Progress: Complete
Maintenance and update frequency:: TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database. No changes or updates will be made to this version of the TIGER/Line Shapefiles. Future releases of TIGER/Line Shapefiles will reflect updates made to the Census MAF/TIGER database.

Access constraints: None

Use constraints:

The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source.

The boundary information in the TIGER/Line Shapefiles are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.Coordinates in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest.

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Data Quality Information:

Lineage:

Source information:

Originator:: U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication date: Unpublished material
Title: Census MAF/TIGER database
Type of source media: online
Source contribution:: The selected geographic and cartographic information (line segments) are derived from the U.S. Census Bureau's Master Address File Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) database.
Beginning date: 01/2010
Ending date: 07/2010

Source information:

Originator: U.S. Census Bureau
Publication date: 2011
Title: 2010 TIGER/Line Montana Block Boundary Shapefile
Online linkage: ftp://ftp2.census.gov/geo/pvs/tiger2010st/30_Montana/30/tl_2010_30_tabblock10.zip
Type of source media: online
Source contribution: This is the source of the block boundary coordinates
Calendar date: 2010

Source information:

Originator: U.S. Census Bureau
Publication date: 2011
Title: Public Law 94-171 Redistricting File, Montana
Online linkage: http://www2.census.gov/census_2010/01-Redistricting_File--PL_94-171/Montana/mt2010.pl.zip
Type of source media: online
Source contribution: This is the source of the population count data
Calendar date: 2010

Source information:

Originator: U.S. Census Bureau
Publication date: 2011
Title: Public Law 94-171 Redistricting File Database Template
Online linkage: http://www2.census.gov/census_2010/01-Redistricting_File--PL_94-171/PL2010_Access2003.mdb
Source contribution:: This is the database template used to provice access to the population count data.
Calendar date: 2010

Process step:

Import the PL94-171 text files into the Microsoft Access database provided by the Census Bureau. Write a query to pull the desired fields from the Census table into a new table and create a GeoID10 field from the State, County, Tract, and block fields:

SELECT geo.LogRecNo,
geo.[State] geo.[County] geo.[Tract] geo.[Block] AS GeoID10,
PL1.P0010001, PL1.P0010002, PL1.P0010003, PL1.P0010004, PL1.P0010005,
PL1.P0010006, PL1.P0010007, PL1.P0010008, PL1.P0010009, PL1.P0020002,
PL2.P0030001, PL2.H0010001, PL2.H0010002
INTO Census_Blocks
FROM (Mtgeo2010 as geo
INNER JOIN PL_Part1 as PL1 ON Mtgeo2010.LogRecNo = PL_Part1.LOGRECNO)
INNER JOIN PL_Part2 as PL2 ON Mtgeo2010.LogRecNo = PL_Part2.LOGRECNO
WHERE geo.SumLev = 750;


Process date: 03/16/2010

Process step:

Project the shapefile to Montana State Plane Coordinates. Load the shapefile and the new table from the Access database into ArcMap and join them on the GeoID10 field. Select the desired output fields and export the data to a new shapefile. Add the acres and density fields and calculate the acreage and population density.

Spatial Data Organization Information:

Indirect spatial reference method:

Federal Information Processing Standards (FIPS), ANSI, and feature names.

Point and vector object information:

SDTS object type: G-polygon

SDTS object count: 132288

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: meters

Geodetic model:

Horizontal datum name:: North American Datum of 1983 in the 48 contiguous states, the District of Columbia, Alaska, Hawaii, Puerto Rico, the Virgin Islands of the United States, and the Pacific Island Areas.
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137
Denominator of flattening ratio: 298257

Entity and Attribute Information:

Entity type label: cblock2010.dbf

Entity type definition: 2010 Census Blocks

Attribute label: FID

Attribute definition: Shapefile sequence number

Attribute label: Shape

Attribute definition: Feature geometry.

Attribute label: STATEFP10

Attribute definition:: 2010 Census state Federal Information Processing Standards (FIPS) code

Attribute label: COUNTYFP10

Attribute definition:: 2010 Census county Federal Information Processing Standards (FIPS) code

Attribute label: TRACTCE10

Attribute definition: 2010 Census census tract code

Attribute label: BLOCKCE10

Attribute definition: 2010 Census tabulation block number

Attribute label: GEOID10

Attribute definition:: Block identifier; a concatenation of 2010 Census state Federal Information Processing Standards (FIPS) code, county FIPS code, census tract code, and tabulation block number

Attribute label: LogRecNo

Attribute definition: PL 94-171 record number

Attribute label: P0010001

Attribute definition: Total population of the block, 2010 Census

Attribute label: P0010002

Attribute definition: Number of persons identified as belonging to one race only

Attribute label: P0010003

Attribute definition: Number of persons identified as White and one race only

Attribute label: P0010004

Attribute definition:: Number of persons identified as Black or African American and one race only

Attribute label: P0010005

Attribute definition:: Number of persons identified as American Indian or Alaska Native and one race only

Attribute label: P0010006

Attribute definition: Number of persons identified as Asian and one race only

Attribute label: P0010007

Attribute definition:: Number of persons identified as Native Hawaiian or Other Pacific Islander and one race only

Attribute label: P0010008

Attribute definition:: Number of persons identified as Some Other Race and one race only

Attribute label: P0010009

Attribute definition:: Number of persons identified as belonging to two or more races

Attribute label: P0020002

Attribute definition: Number of persons identified as Hispanic or Latino

Attribute label: P0030001

Attribute definition: Number of persons of age 18 or over

Attribute label: H0010001

Attribute definition: Number of housing units

Attribute label: H0010002

Attribute definition: Number of occupied housing units

Attribute label: Acres

Attribute definition: Area in acres

Attribute label: Density

Attribute definition: Population density in persons per square mile

Distribution Information:

Distributor:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov
E-Mail: geoinfo@mt.gov

Resource description: Downloadable Data

Distribution liability:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Standard order process:

Digital form:

Metadata Reference Information:

Metadata date: 12/04/2013

Metadata review date: 04/17/2013

Metadata review date: 03/16/2011

Metadata contact:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov