geography update u. s. census bureau sdc/bidc midyear meeting new york city march 27, 2007
TRANSCRIPT
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Geography Update
U. S. Census Bureau
SDC/BIDC Midyear MeetingNew York CityMarch 27, 2007
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Topics
•Update on TIGER Realignment
•Boundary and Annexation Survey
•ANSI Code Transition
•Statistical Areas Program
•Geographic Products
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MTAIP
• 700 Counties Completed in GFY 2006• Goal was 700
• Harris is obtaining source material this year for balance of nation and a small number of “second cycle”
• Harris will deliver last “initial enhancement” counties by April 1, 2008.
• Expect to receive over 700 counties this Fiscal Year based on recently passed budget• Will exceed goal of 690 counties
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MTAIP
• 2484 Counties delivered to date – 77%• 2041 local sources used (includes
partials)• 1815 counties met 7.6 meters or better• 419 needed “enhancement”
• Status Maps:
• http://ftp2.census.gov/geo/maps/mtaip_status/
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Boundary and Annexation Survey
• Obtains information on legal boundaries and corporate status
• Where states have legislative authority, working to establish a state-level BAS
• Survey universe varies by year– CY2007 – places of 2,500+
• Response rate currently over 71%
– CY2008 – All places/MCDs/American Indian areas • Will be coordinated with LUCA
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Boundary and Annexation Survey
• Decennial Census Support– Includes a Boundary Validation • Early Summer 2010• Based on responses by April 1, 2010 to 2010
BAS
• ACS/Population Estimates– Based on boundaries as of January 1
and received by April 1 of each year
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Transition from FIPS to ANSI
In 2005, NIST announced withdrawal of the following FIPS geographic entity codes:
• FIPS 5-2: states and equivalent entities; • FIPS 6-4: counties and equivalent entities;• FIPS 8-6: metropolitan areas; • FIPS 9-1: congressional districts;• FIPS 55-3: places, county subdivisions, and
other locational entities
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Transition from FIPS to ANSI
The Census Bureau is the maintenance agency for codes for:
• States and equivalent entities;• Counties and equivalent entities;• Congressional districts; and• (on behalf of OMB) metropolitan and
micropolitan statistical areas and related statistical areas
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Transition from FIPS to ANSI
No changes in codes or code structure for the following geographic areas:
• States• Counties• Congressional Districts• Metropolitan and Micropolitan Statistical
Areas and related statistical areas
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Transition from FIPS to ANSI
Geographic Entity Length Range
States and Equivalent Entities 2 digits 01-78
Counties and Equivalent Entities 3 digits 001-507,
510-840
Congressional Districts 2 digits 00 (at large),01-57, 98 (non-voting),99 (no rep.)
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Transition from FIPS to ANSIGeographic Entity Length Range
Metropolitan Statistical Areas 5 digits 10000-59999Micropolitan Statistical Areas 5 digits 10000-59999Metropolitan Divisions 5 digits 10004-59994* New England City
and Town Areas 5 digits 70000-79999NECTA Divisions 5 digits 70004-79994* Combined Statistical Areas 3 digits 100-599Combined NECTAs 3 digits 700-799
*Metropolitan divisions and NECTA divisions are distinguished from metropolitan and micropolitan statistical areas and NECTAs by codes that end in “4.”
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Transition from FIPS to ANSI
The U.S. Geological Survey is the maintenance agency for codes for:
• named populated places;• primary divisions of counties;• and other locational entities.
(All covered under the former FIPS 55)
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Transition from FIPS to ANSI
U.S. Geological Survey has proposed adoption of the Geographic Names Information System (GNIS) identifier as the standard code for places and county subdivisions
GNIS ID characteristics:• Up to 8 digits in length;• Permanent (will not change if place name
changes)• Unique within nation;• Will not sort alphabetically
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Transition from FIPS to ANSI
Examples of Places and GNIS IDs:
Alexandria, VA…...................1492456Baltimore, MD….............……..597040Seattle, WA……….............….1512651Tacoma, WA…….............…...1512713Takoma Park, MD…............….598146Washington, DC………….……531871
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Transition from FIPS to ANSI
Geography Division will store and provide GNIS ID codes for the following entities:
• States and equivalent areas*• Counties and equivalent areas*• County subdivisions• Sub-minor civil divisions (Puerto Rico only)• Incorporated places and census designated places• American Indian/Alaska Native/Native Hawaiian areas• Alaska Native Regional Corporations• American Indian tribal subdivisions
*The GNIS ID for states and counties and equivalent areas is a supplemental code that does not replace the 2-digit state and 3-digit county codes.
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Transition from FIPS to ANSI
The Census Bureau’s plans currently call for:
• Including the GNIS ID in the MAF/TIGER database;
• Including the GNIS ID in demographic, economic, and geographic data products as soon as possible;
• Continuing to issue 5-digit codes for places, county subdivisions, and other geographic entities through at least 2012 to support 2010 Census and other tabulation program processing and products.
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Transition from FIPS to ANSI
Example layout of codes for Takoma Park, MD as they might appear in future Census Bureau products :
STATEFP..................24COUNTYFP…………031COUSUBNS………...1929469COUSUBFP…………91160PLACENS……………598146PLACEFP……………76650Name…………………Takoma Park
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Participant Statistical Areas
• Federal Register Notices with Proposed Criteria– Should be VERY soon–Will post on Census Web site–Will notify SDC List-Serv
• Electronic-only program– Use MAF/TIGER Partnership Software or
own GIS that provides specified output in accordance with specified business rules
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Other “Geographic” Programs
• Redistricting Data Program – Phase 2– Early 2008 – one county– Work with designated State liaison
• School Districts– Funded by NCES– Work with State Title 1 Mapping Coordinator
• Traffic Analysis Zones (TAZ)– Discussions with FHWA to fund and schedule– Work with MPOs/DOTs
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Geographic Products
• TIGER/Line Files– Last Edition Available • Second Edition 2006 TIGER/Line
• EVENTUALLY– TIGER will be Available over the Internet
• Web Feature Server• Web Map Server
– TIGER/GML
• Public TIGER Product – (What do we call it?)– First Edition 2007– Available late Summer/Fall 2007