The percentage of women who cohabited as a first union increased for all races and ethnic groups, except Asian women.
Among Hispanics, the percentage increased 57%; for whites, 43%; for blacks, 39%.-- 22 months is the median duration of first cohabitation, up from 20 months in 2002 and 13 months in 1995.-- 19% of women became pregnant and gave birth in the first year of a first premarital cohabitation.-- Within three years of cohabiting, 40% of women had transitioned to marriage; 32% remained living together; 27% had broken up."The United States has long had the shortest cohabiting relationships of any wealthy nation and now these relationships are lengthening," says sociologist Andrew Cherlin of Johns Hopkins University in Baltimore.
The Census Bureau, currently describes an "unmarried partner" as a "person age 15 years and over, who is not related to the householder, who shares living quarters, and who has a close personal relationship with the householder." and the Bureau still report these numbers to show historical trends.
However, such measures should be taken loosely, as researchers report that cohabitation often does not have clear start and end dates, as people move in and out of each other's homes and sometimes do not agree on the definition of their living arrangement at a particular moment.
In 2005, the Census Bureau reported 4.85 million cohabiting couples, up more than ten times from 1960, when there were 439,000 such couples.
According to the 2003 American Family Survey: Couples cite many reasons for living together, including financial considerations and housing costs, as well as concerns over the high rate of divorce.
But men and women tend to view cohabiting arrangements differently.