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For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

SOI Tax Stats - County-to-County Migration Data Files

The 2010–2011 migration data have now been released. SOI will release migration data for 2011–2012 as soon as feasible. Information on the release schedule is forthcoming.

Data files are available for download in two formats:

• Generic ASCII data files (.dat file extension) - These require a record layout below to read.
• Comma Separated Values files (.csv file extension) - Data items are separated by commas, where each new line represents a new row.



Migration Data Users Guide

Database Record Layout—required for .dat files

County-to-County Inflow

.dat File
2010-2011     2009-2010     2008-2009     2007-2008     2006-2007     2005-2006     2004-2005

.csv File
2010-2011     2009-2010     2008-2009     2007-2008     2006-2007     2005-2006     2004-2005

County to County Outflow

.dat File
2010-2011     2009-2010     2008-2009     2007-2008     2006-2007     2005-2006     2004-2005

.csv File
2010-2011     2009-2010     2008-2009     2007-2008     2006-2007     2005-2006     2004-2005


Return to Free Migration Data Downloads

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