GIS Data Catalog
2010 Census Blocks for King County - Conflated to Parcels
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Summary
In order for others to use the information in the Census MAF/TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line Shapefiles.
Description
The TIGER/Line Files are shapefiles and related database files (.dbf) that 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).
The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.
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 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.
Census blocks cover all territory in the United States, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands).
Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial A block may consist of one or more faces.
Layer information
| Layer Name | blkgrp10_area |
| Subject Category | Census |
| Title | 2010 Census Blocks for King County - Conflated to Parcels |
| Feature Count | 1422 |
| Feature Type | Polygon |
| Next Update | None planned |
| Spatial reference | EPSG:2926 |
| Control ID | 859 |
| Place Keywords | 53033, Washington State, King County, WA, Pacific NW |
| Theme Keywords | Census, Census Block, Demographic, Block, Polygon |
| Supplemental Information |
http://www5.kingcounty.gov/sdc/addl_doc/CustomizedJoinDetail_Blocks.htm |
Table Preview
Attribute information
|
OBJECTID
From ESRI |
Description
Internal feature number. DomainSequential unique whole numbers that are automatically generated. |
|
SHAPE
From ESRI |
Description
Feature Geometry DomainCoordinates defining the features |
|
GEO_ID_GRP
No Source Noted |
Description
Not Found DomainNot Found |
|
FEATURE_ID
No Source Noted |
Description
Not Found DomainNot Found |
|
BLKGRP_LBL
No Source Noted |
Description
Not Found DomainNot Found |
|
BLKGRP_STR
No Source Noted |
Description
Not Found DomainNot Found |
|
BLKGRP_INT
No Source Noted |
Description
Not Found DomainNot Found |
|
GRPLABEL_FULL
No Source Noted |
Description
Not Found DomainNot Found |
|
GRPLABEL_COMP
No Source Noted |
Description
Not Found DomainNot Found |
|
GRPLABEL_TRIM
No Source Noted |
Description
Not Found DomainNot Found |
|
TRACT_LBL
No Source Noted |
Description
Not Found DomainNot Found |
|
TRACT_STR
No Source Noted |
Description
Not Found DomainNot Found |
|
TRACT_INT
No Source Noted |
Description
Not Found DomainNot Found |
|
TRACT_FLT
No Source Noted |
Description
Not Found DomainNot Found |
|
TRACT_DEL
No Source Noted |
Description
Not Found DomainNot Found |
|
TRTLABEL_FULL
No Source Noted |
Description
Not Found DomainNot Found |
|
TRTLABEL_COMP
No Source Noted |
Description
Not Found DomainNot Found |
|
TRTLABEL_TRIM
No Source Noted |
Description
Not Found DomainNot Found |
|
COUNTY_STR
No Source Noted |
Description
Not Found DomainNot Found |
|
COUNTY_INT
No Source Noted |
Description
Not Found DomainNot Found |
|
STATE_STR
No Source Noted |
Description
Not Found DomainNot Found |
|
STATE_INT
No Source Noted |
Description
Not Found DomainNot Found |
|
LEVEL_1
No Source Noted |
Description
Not Found DomainNot Found |
|
LEVEL_2
No Source Noted |
Description
Not Found DomainNot Found |
|
LEVEL_3
No Source Noted |
Description
Not Found DomainNot Found |
|
LEVEL_4
No Source Noted |
Description
Not Found DomainNot Found |
|
GROUP_AREA
No Source Noted |
Description
Not Found DomainNot Found |
|
GROUP_PERI
No Source Noted |
Description
Not Found DomainNot Found |
|
Shape.STArea()
From SQL Server |
Description
Returns the area of a geometry instance in square units, based on the spatial reference identifier (SRID) of the geometry. DomainDouble |
|
Shape.STLength()
From SQL Server |
Description
Returns the total length of the elements in a geometry instance. DomainDouble |
Contact information
| Maintained by | KCGIS Center |
| Primary |
KCGIS Center
giscenter@kingcounty.gov |
Terms of Use
| License | Terms of use and copyright |
Use this Data
|
Links
How to use in ArcGIS Pro |
|
| Sharing Status | Public |
Summary
In order for others to use the information in the Census MAF/TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line Shapefiles.
Description
The TIGER/Line Files are shapefiles and related database files (.dbf) that 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).
The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.
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 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.
Census blocks cover all territory in the United States, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands).
Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial A block may consist of one or more faces.
Contact information
| Maintained by | KCGIS Center |
| Primary |
KCGIS Center
giscenter@kingcounty.gov |
Terms of use and copyright
| License | Terms of use and copyright |
Change history
| 1/1/2010 |
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for all of the aforementioned geographic entities are then distributed among the shapefiles each containing attributes for line, polygon, or landmark geographic data. |
| Update 2 |
Parcels were unioned with the census blocks and an algorithm based on majority area was applied to conflate those boundaries that crossed parcels to the edge of the majority parcel. Inspection and additional manual cleanup of multi-part polygons and slivers was performed. |
| Update 3 |
Attributes in original Census data were reformatted to a series of map label and join items, both as string and integer. |
| Update 4 |
All multipart polygons were devolved to single part. |