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Updates and changes.

The MSA CBSA FIPS County crosswalk below is a merge of the individual CBSA and MSA files below.

Users should be aware that it appears that CMS did not update their SSA to FIPS county crosswalk to use 2010 Census definitions. It should be possible; however, to link the FIPS county codes in this file to those in Census' CBSA to FIPS County Crosswalk file to get more up to date CBSA definititions.

Some additional notes about the data are the following: Los Angeles FIPS 06037 can have two SSA county codes: 05210 and 05200. Los Angeles is the only FIPS county with multiple SSA codes. 2012-2016 files are identical. 2005 and 2011 file have 3,289 counties and 2012-2016 have 3,273 counties. A list of the counties present in 2011 and not in 2012 is in Updates and changes  

Combined MSA CBSA FIPS County Crosswalk 2005, 2011-2017

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CBSA to SSA and FIPS State and County Crosswalk

Fiscal Year

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2017

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2016

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2015

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Diff Year N-1

2014

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Diff Year N-1

CMS delivered the same source spreadsheet in the FY 2014 and FY 2013 deliveries. This could mean that CMS made no changes to the source file and reused the same file in the next year when the underlying data had no change..

2013

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2012

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2011

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Diff Year N+1

Diff Year N-1

CMS did not produce SSA to MSA or CBSA crosswalks between 2005-2011. This file is a crosswalk by county from the old MSA to the New MSA (under the CBSA definitions) and includes SSA state and county as well.

FY 2005

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Not Applicable

Contact data@nber.org with questions, comments, or suggestions.

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