Where are all the unmarried women?
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004243:Divorce; D005260:Female; D005843:Geography; D006801:Humans; D008393:Marriage; D008875:Middle Aged; D012847:Single Person; D013223:Statistics as Topic; D014481:United States