March is Women’s History Month and to commemorate it, the Census Bureau has again released their “Facts for Features” page that contains various demographic and socioeconomic data and statistics about women in the U.S.. Here are some of the more notable figures:

153.6 million: The number of females in the United States as of Oct. 1, 2007. The number of males is 149.4 million.

$32,649: The median annual earnings of women 16 or older who worked year-round, full time, in 2006. Women earned 77 cents for every $1 earned by men.

98 cents: The amount women ($48,586) in the District of Columbia, who worked year-round, full time, earned for every $1 their male counterparts earned ($49,544) in 2006. Among all states or state equivalents, the district was where women were closest to earnings parity with men. Connecticut, Maryland and New Jersey were the only states where median earnings for women were greater than $40,000.

32%: Percent of women 25 to 29 who had attained a bachelor’s degree or higher in 2006, which exceeded that of men in this age range (25 percent). Eighty-eight percent of women and 84 percent of men in this same age range had completed high school.

894,000: The projected number of bachelor’s degrees that will be awarded to women in the 2007-08 school year, who are also projected to earn 380,000 master’s degrees during this period. Women would, therefore, earn 59 percent of the bachelor’s and 61 percent of the master’s degrees awarded during this school year. In addition, women would earn a majority (52 percent) of first-professional degrees, such as law and medical.

More than $939 billion: Revenue for women-owned businesses in 2002. There were 116,985 women-owned firms with receipts of $1 million or more.

Nearly 6.5 million: The number of women-owned businesses in 2002. Women owned 28 percent of all nonfarm businesses. Nearly one in three women-owned firms operated in health care and social assistance, and other services, such as personal services, and repair and maintenance. Women owned 72 percent of social assistance businesses and just over half of nursing and residential care facilities.

37%: Percent of females 16 or older who work in management, professional and related occupations, compared with 31 percent of males.

22 million: Number of female workers in educational services, health care and social assistance industries. More women work in this industry group than in any other. Within this industry group, 11 million work in the health care industry and 8.4 million in educational services.

62.4 million: Number of married women (including those who are separated or have an absent spouse) in 2006. There were 59.8 million unmarried (widowed, divorced or never married) women.

5.6 million: Number of stay-at-home mothers nationwide in 2006, up from 4.6 million a decade earlier.