The data given here are the percentages of state and city populations that are native-born citizens, naturalized citizens, foreign-born residents, and non-citizen residents.
Native-born person refers to someone who is a U.S. citizen at birth because he or she fulfilled one of the following conditions:
a) Born in the United States, Puerto Rico, or U.S. Island area, or
b) Born abroad to U.S. citizen parent(s)
Naturalized citizen refers to anyone born as a citizen of another country who fulfilled the requirements to become a United States citizen. We calculate the percentage of naturalized citizens by dividing the Census Bureau's number of foreign-born naturalized citizens by the total population in the state.
Foreign-born population refers to "anyone who is not a U.S. citizen at birth," including naturalized citizens and non-citizens.
Non-citizen refers to anyone residing in the United States who is not a citizen. We calculate the percentage of non-citizens by dividing the Census Bureau's number of foreign-born non-citizens by the total population in the state.
To calculate the percentage for this data series in the cities, the total number of people in the group was divided by the total population of the city.
Note: 2021 1-year estimates were incomplete for some states; in the case of missing data, figures from the 2021 5-yr estimates were used.