Here is a sample of what can be found at the Migration Policy Institute website -- check it out lots more interesting information about New Hampshire and all of the states.
1. This table describes the entire population of New Hampshire.
2. For 1990, 2000, and 2011, the total for the region of birth of the foreign born is different from
the total foreign born. This is because the 1990 total excludes those who did not report a country of birth and those born at sea, while the 2000 and 2011 totals exclude those born at sea. In 2000 and 2011, individuals who did not report a country of birth were allocated a country (and region) based on various characteristics. Because of this allocation in 2000 and 2011, but not in 1990, the increase for a specific region between 1990 and
2000 is overstated by a small, but unknown, amount.
Sources: US Census Bureau, 2011 American Community Survey (ACS); US Census Bureau, 1990 Census of
Population and Housing and Census 2000,
For information about ACS methodology, sampling error, and nonsampling
Characteristics of the Foreign-Born Population in New Hampshire,