U.S. Population Migration Data 

Migration data for the United States are based on year-to-year address changes reported on individual income tax returns filed with the IRS. They present migration patterns by State or by county for the entire United States and are available for inflows—the number of new residents who moved to a State or county and where they migrated from, and outflows—the number of residents leaving a State or county and where they went. The data include:

  • Number of returns filed, which approximates the number of households that migrated
  • Number of personal exemptions claimed, which approximates the number of individuals
  • Total adjusted gross income, starting with Filing Year 1995
  • Aggregate migration flows at the State level, by the size of adjusted gross income (AGI) and age of the primary taxpayer, starting with Filing Year 2011.

Individual Income Tax State Data

State data show selected income and tax items classified by State, size of adjusted gross income (AGI), and selected AGI percentiles. Data are based on individual income tax returns filed with the IRS. The data include items such as:

  • Number of returns, which approximates the number of households
  • Number of personal exemptions, which approximates the population
  • Adjusted gross income
  • Wages and salaries
  • Dividends before exclusion
  • Interest received 

Congressional District Data 

Congressional district data show selected income and tax items classified by State, congressional district, and size of adjusted gross income. Data are based on individual income tax returns filed with the IRS.

The data include items, such as:

  • Number of returns, which approximates the number of households
  • Number of personal exemptions, which approximates the population
  • Adjusted gross income
  • Wages and salaries
  • Dividends before exclusion
  • Interest received 

County, Metropolitan, and Micropolitan Data 

SOI bases its county income data on the addresses reported on individual income tax returns filed with the IRS. Data are presented by county (including State totals). The data include:

  • Number of returns, which approximates the number of households
  • Number of personal exemptions, which approximates the population
  • Adjusted gross income
  • Wages and salaries
  • Dividends before exclusion
  • Interest received

Individual Income Tax ZIP Code Data 

ZIP Code data show selected income and tax items classified by State, ZIP Code, and size of adjusted gross income. Data are based on individual income tax returns filed with the IRS. The data include items, such as:

  • Number of returns, which approximates the number of households
  • Number of personal exemptions, which approximates the population
  • Adjusted gross income 
  • Wages and salaries
  • Dividends before exclusion
  • Interest received