What is the total number of immigrants who came to United States from 1820 2010?

The total number of immigrants who came to the United States from 1820 to 2010 is approximately 62.4 million. This number includes both legal and illegal immigrants, as well as refugees and asylum seekers. The vast majority of immigrants during this period came from Europe, with the largest numbers coming from Germany, Italy, Ireland, and the United Kingdom. However, there was also a significant number of immigrants from Asia, Latin America, and Africa.