Never-married women were instructed to include all children born to them. Beginning in 1999, the item on the number of children ever born was deleted in the American Community Survey and replaced by a question asking if a woman has had a live birth in the 12-month period preceding the survey date. The universe for this item is all women 15 to 50 years of age, regardless of marital status. People who indicate that they are U.S. citizens through naturalization are also citizens. Naturalized citizens are foreign-born people who identify themselves as naturalized.
Naturalization is the conferring, by any means, of citizenship upon a person after birth.
Not a citizen People who indicate they are not U.S. citizens. All people over the age of 15 who have been employed at any time are asked to designate the type of work normally done or the work performed most regularly. Occupations and types of work are then broken down into the following 5 classes. Self-employed people whose business was incorporated are included with private wage and salary workers because they are paid employees of their own companies. For some tabulations, the data are presented separately for the three levels of government.