Migration
Two factors influence population growth—natural increase and migration and are generally described as the components of population change.
Natural increase occurs when there are more births than deaths (conversely, natural decrease occurs when there are more deaths than births).
Migration is shown in the data as a net figure, the calculation of gross in-migration (people moving into an area) and gross out-migration (people moving out of that area). If net migration is positive, there are more people moving into an area than moving out.
Census Migration Estimates
The Census Bureau tracks domestic migration (from other places within the United States) and international migration. Their estimates of international migration are comprised of: legal immigration from abroad; net undocumented immigration from abroad; emigration; and net movement between Puerto Rico and the U.S. mainland.
Indiana County Migration & Natural Increase
- Overview | Timeseries
- 1990s data (CSV file)
- 1980s data (Text file)
National/State Migration & Natural Increase
- Overview | Timeseries
- 1990s data (CSV file)
- 1980s data (Text file)
Census 2000 County-to-County Migration
These migration data come from Census 2000 and indicate the number of people (age 5 and older) in a county and where that person lived in 1995. The Excel files below contain information on the inflows and outflows for Indiana from counties across the nation.
Detailed data on other states, as well as additional documentation, can be accessed at www.census.gov/population/www/cen2000/ctytoctyflow.html
IRS Nationwide Migration Flow Files
The State-to-State and County-to-County migration data are updated annually and based on the year-to-year changes in the addresses shown on the population of returns from the IRS Master File system. Excel files present data on migration patterns by state for the entire United States, including inflows and outflows. Aggregate money amounts are in thousands of dollars and median money amounts are in whole dollars.
County-to-County flows
- Tax year 2005 filing year 2006
- Tax year 2004 filing year 2005
- Tax year 2003 filing year 2004
- Data are unavailable
- Tax year 2002 filing year 2003
- Tax year 2001 filing year 2002
- Tax year 2000 filing year 2001
State-to-State flows
IRS example on how to use these data files (.xls)
- Tax year 2005 filing year 2006
- Tax year 2004 filing year 2005
- Data are unavailable
- Tax year 2003 filing year 2004
- Data are unavailable
- Tax year 2002 filing year 2003
- Tax year 2001 filing year 2002
- Tax year 2000 filing year 2001
Related Links
