This app shows the inbound and outbound flow of population to and from every state in the U.S., between 2015 and 2016. This is based on tax returns filed through the IRS. Click on any state to see information about population flows. The brightest, thickest lines have the most population moving along that flow line. The circles indicate the total population inbound or outbound. The chart is sorted by distance to the state, and lets you instantly compare the inflow and outflow of population between 2015 and 2016. The visualization was created from the Distributive Flow Lines tool to depict the flow of population in different directions throughout the country. To see your state or other states, click here. The data comes from the Internal Revenue Service (IRS) migration data based on tax stats. According to the U.S. Population Migration Data: Strengths and Limitations, if a state had less than 3 tax returns from another state, the value is suppressed. This is stated within the pop-up for these cases.

In 2021, Germany, Spain, and France were the countries which saw the highest immigration in the European Union. Germany alone say over 870,000 immigrants entering the country in that year, with a majority coming from non-EU countries. There is significant variation in the make-up of the inflows of migrants in different EU member states, with countries such as Spain and Italy seeing large majorities coming from outside the EU, while France and Germany saw roughly an equal number of migrants coming from other EU countries or being returning citizens of those countries. The Netherlands and Belgium stand out as countries which saw more intra-EU migrants than non-EU migrants, with approximately 90,000 and 63,000 moving to these countries respectively from within the EU. Several EU member states saw the greatest share of migrants being citizens of the country themselves, with Romania, Ireland, Greece, and Portugal being notable in this respect. These countries have all seen large flows of people working in other EU member states in recent years, who in many case return to their country of origin within a couple of years.