In preparation for Mother’s Day, the U.S. Census Bureau has presented us with its annual gift: a bonanza of information (pdf) about mothering in the United States.

Fascinating portrait we mothers make. Among the stats:

85.4 million: Estimated number of mothers in 2008.

54%: Proportion of 15- to 44-year-old women who were mothers in 2008.

82%: Proportion of women ages 40 to 44 who had given birth as of 2008. In 1976, 90 percent of women in that age group had given birth.

5 million: Number of stay-at-home moms in 2010. This is down from 5.1 million in 2009 and 5.3 million in 2008.

61%: Proportion of mothers who recently gave birth and were in the labor force in 2008, up from 57 percent in 2006.

2: The number of births per woman in 2009, a decline of 4 percent from 2008.

Jacob and Isabella: The most popular baby names for boys and girls in 2009.

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