U.S. Department of Commerce, U.S. Census Bureau, Geography Division Montana State Library 2011 2010 vector digital data Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Census/cblock2010.zip https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={77211e26-cfa9-4a7b-b8f8-09d567c1d131} 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. 201001 201007 publication date Complete 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. -116.050002 -104.039138 49.00139 44.358209 ISO 19115 Topic Category boundaries society Population Block Blocks Census Block Census Blocks Density 2010 Census Montana MT None 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. Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov U.S. Department of Commerce, U.S. Census Bureau, Geography Division Unpublished material online 201001 201007 publication date MAF/TIGER 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. U.S. Census Bureau 2011 Wasington, DC U.S. Census Bureau ftp://ftp2.census.gov/geo/pvs/tiger2010st/30_Montana/30/tl_2010_30_tabblock10.zip online 2010 ground condition This is the source of the block boundary coordinates U.S. Census Bureau 2011 Washington, DC U.S. Census Bureau http://www2.census.gov/census_2010/01-Redistricting_File--PL_94-171/Montana/mt2010.pl.zip online 2010 ground condition This is the source of the population count data U.S. Census Bureau 2011 Washington, DC U.S. Census Bureau http://www2.census.gov/census_2010/01-Redistricting_File--PL_94-171/PL2010_Access2003.mdb 2010 This is the database template used to provice access to the population count data. 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; 20100316 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. Federal Information Processing Standards (FIPS), ANSI, and feature names. Vector G-polygon 132288 State Plane Coordinate System 2500 45.000000 49.000000 -109.500000 44.250000 600000.000000 0.000000 meters 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. Geodetic Reference System 80 6378137 298257 cblock2010.dbf 2010 Census Blocks FID Shapefile sequence number Shape Feature geometry. STATEFP10 2010 Census state Federal Information Processing Standards (FIPS) code COUNTYFP10 2010 Census county Federal Information Processing Standards (FIPS) code TRACTCE10 2010 Census census tract code BLOCKCE10 2010 Census tabulation block number GEOID10 Block identifier; a concatenation of 2010 Census state Federal Information Processing Standards (FIPS) code, county FIPS code, census tract code, and tabulation block number LogRecNo PL 94-171 record number P0010001 Total population of the block, 2010 Census P0010002 Number of persons identified as belonging to one race only P0010003 Number of persons identified as White and one race only P0010004 Number of persons identified as Black or African American and one race only P0010005 Number of persons identified as American Indian or Alaska Native and one race only P0010006 Number of persons identified as Asian and one race only P0010007 Number of persons identified as Native Hawaiian or Other Pacific Islander and one race only P0010008 Number of persons identified as Some Other Race and one race only P0010009 Number of persons identified as belonging to two or more races P0020002 Number of persons identified as Hispanic or Latino P0030001 Number of persons of age 18 or over H0010001 Number of housing units H0010002 Number of occupied housing units Acres Area in acres Density Population density in persons per square mile Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov geoinfo@mt.gov Downloadable Data 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. ESRI shapefile https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Census/cblock2010.zip 20131204 20130417 20110316 Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {6874ffaa-1e8f-48e5-8029-bad7511ce710}