Metadata: 1990 to 2000 Census Tract Correspondence and Combined Tracts

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1990 to 2000 Census Tract Correspondence and Combined Tracts

This page last updated: 01/30/2003
Metadata created using Minnesota Geographic Metadata Guidelines

Metadata Summary

Originator	Metropolitan Council
Abstract	This dataset consists of a correspondence table and shape file of the combined 1990 and 2000 Census tracts. Note: Census tracts from 1990 and 2000 do not match in all areas. This dataset is an attempt to match them. Some combining and splitting of tracts was necessary. See the Lineage in Section 2 of the metadata for more information.
Browse Graphic	View a sample of the data.
Time Period of Content Date	2000
Currentness Reference	The 2000 Census
Access Constraints	None
Use Constraints	None
Distributor Organization	Metropolitan Council
Ordering Instructions	This dataset is distributed on the internet by clicking below after 'Online Linkage'. Doing so will tell your browser to download a 'ZIP' file which will contain the following: - ArcView shape file - dBase table (.dbf) - metadata for the dataset (.htm) - NOTICE.RTF, an important notice about this dataset that can be read by any word processing software.
Distribution Liability	NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Metropolitan Council for its own internal business purposes. The Metropolitan Council does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, it is recommended that the GIS Data include a copy of this disclaimer and this metadata.
Online Linkage	I AGREE to the notice in "Distribution Liability" above. Clicking to agree will begin the download process (See Ordering Instructions above for details.)

Full Metadata

1990 to 2000 Census Tract Correspondence and Combined Tracts

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information


Section 1	Identification Information		Top of page
Originator	Metropolitan Council
Title	1990 to 2000 Census Tract Correspondence and Combined Tracts
Abstract	This dataset consists of a correspondence table and shape file of the combined 1990 and 2000 Census tracts. Note: Census tracts from 1990 and 2000 do not match in all areas. This dataset is an attempt to match them. Some combining and splitting of tracts was necessary. See the Lineage in Section 2 of the metadata for more information.
Purpose	The correspondence table and subsequent shape file allow for the comparison of 1990 and 2000 Census tract data by designating 1 new 'combined' tract number that accounts for each 1990 and 2000 Census tract.
Time Period of Content Date	2000
Currentness Reference	The 2000 Census
Progress	Complete
Maintenance and Update Frequency	None planned
Spatial Extent of Data	Twin Cities 7 County Metropolitan Area. This includes the counties of Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington in Minnesota.
Bounding Coordinates	-94.012 -92.732 45.415 44.471
Place Keywords	Twin Cities, Anoka County, Carver County, Dakota County, Hennepin County, Ramsey County, Scott County, Washington County
Theme Keywords	census, demographics, census tracts, tract correspondence
Theme Keyword Thesaurus	None
Access Constraints	None
Use Constraints	None
Contact Person Information	Todd Graham, Research Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651.602.1322 FAX: 651.602.1674 E-mail: todd.graham@metc.state.mn.us
Browse Graphic	View a sample of the data.
Browse Graphic File Description	Sample map showing the combined tracts shape file.
Associated Data Sets	1990 Census Tracts, 2000 Census Tracts, TIGER

Section 2	Data Quality Information	Top of full metadata	Top of page
Attribute Accuracy	Unknown
Logical Consistency	The dataset is topologically 'clean'.
Completeness	Entire seven county geographic area is covered.
Horizontal Positional Accuracy	The positional accuracy of the dataset has not been tested under the National Standards for Spatial Data Accuracy.
Lineage	1990 and 2000 Census tracts were plotted on a map. In order to compare 1990 with 2000 data, the geographic areas need to be the same. A new 'combined' tract number was created using that map. For tracts that did not change between 1990 and 2000, no change was made in their tract number. Where boundaries differed, one of the following prefixes was added, (6) 2 or more 1990 tracts were merged in to 1 2000 tract; (7) only minor differences between 1990 and 2000, no changes made except to note difference; (8) 2 or more 1990 tracts were combined with 2 or more 2000 tracts; or (9) a 1990 tract was split in to 2 or more 2000 tracts. Relating the table to the 2000 Census Tract coverage (TIGER/Line file based) on tract00, a dissolve on the combined item created the combined coverage. In AV 3.2, the coverage was converted to a shape file.
Source Scale Denominator

Section 3	Spatial Data Organization Information	Top of full metadata	Top of page
Native Data Set Environment	ArcGIS 8
Geographic Reference for Tabular Data	Tract number
Spatial Object Type	Vector
Vendor Specific Object Types	Polygon shapes
Tiling Scheme	One layer for entire seven county region.

Section 4	Spatial Reference Information	Top of full metadata	Top of page
Horizontal Coordinate Scheme	UTM
Ellipsoid	GRS80
Horizontal Datum	NAD83
Horizontal Units	Meters
Distance Resolution
UTM Zone Number	15

Section 5	Entity and Attribute Information	Top of full metadata	Top of page

Entity and Attribute Overview

Attributes for COMBINED_TRACTS_1990-2000.SHP polygon shape file 
 
AREA:       The area of the polygon in square meters 
 
 
 
COMBINED:   2000 Combined Tract 
 
 
Attributes for TRACT_CORRESPONDANCE_1990-2000.DBF Table 
 
STATE:      2 digit FIPS state code 
 
CO:         3 digit FIPS county code 
 
TRACT_1990: 6 digit 1990 tract code 
 
TRACT_2000: 6 digit 2000 tract code 
 
TRACT90:    11 digit FIPS state and county codes, and 1990 tract code 
 
TRACT00:    11 digit FIPS state and county codes, and 2000 tract code 
 
COMBINED:   7 digit combined tract code 
 
PREFIX:     1 digit prefix used for COMBINED code to identify differences  
            between 1990 and 2000 tract codes 
 
NO:         unique number scheme identifying all the 1990 and 2000 tracts 
 
 
Table field definitions in ArcInfo terminology 
 
   10 ITEMS: STARTING IN POSITION    1 
  COL  ITEM NAME         WDTH OPUT TYP N.DEC  ALTERNATE NAME 
    1  STATE               2    2  I    - 
    3  CO                  3    3  C    - 
    6  TRACT_1990          6    6  I    - 
   12  TRACT_2000          6    6  I    - 
   18  TRACT90            11   11  i    - 
   29  TRACT00            11   11  I    - 
   40  COMBINED            7    7  C    - 
   47  PREFIX              1    1  I    - 
   48  DESCRIPTION        10   10  C    - 
   58  NO                  3    3  I    -

Entity and Attribute Detailed Citation	None

Section 6	Distribution Information	Top of full metadata	Top of page
Publisher	Metropolitan Council
Publication Date	Unpublished material
Contact Person Information	Mark Kotz GIS Database Administrator Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651.602.1644 FAX: 651.602.1674 E-mail: mark.kotz@metc.state.mn.us
Distributor's Data Set Identifier	Census2000TigerCombinedTracts1990_2000
Transfer Format Name	Shape file
Transfer Format Version Number	ArcGIS 8x
Transfer Size
Ordering Instructions	This dataset is distributed on the internet by clicking below after 'Online Linkage'. Doing so will tell your browser to download a 'ZIP' file which will contain the following: - ArcView shape file - dBase table (.dbf) - metadata for the dataset (.htm) - NOTICE.RTF, an important notice about this dataset that can be read by any word processing software.
Distribution Liability	NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Metropolitan Council for its own internal business purposes. The Metropolitan Council does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, it is recommended that the GIS Data include a copy of this disclaimer and this metadata.
Online Linkage	I AGREE to the notice in "Distribution Liability" above. Clicking to agree will begin the download process (See Ordering Instructions above for details.)

Section 7	Metadata Reference Information	Top of full metadata	Top of page
Metadata Date	01/30/2003
Contact Person Information	Tanya Mayer, GIS Coordinator Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651.602.1604 FAX: 651.602.1674 E-mail: tanya.mayer@metc.state.mn.us
Metadata Standard Name	Minnesota Geographic Metadata Guidelines
Metadata Standard Version	1.2
Metadata Standard Online Linkage	http://www.gis.state.mn.us/stds/metadata.htm

This page last updated: 01/30/2003