In 2002, 2 percent of adults aged 18-44 years had adopted children, approximately 2 million people. Significantly more adopters are men, over age 30, are ever married, have biological children, and have ever used infertility services. Women who have adopted are older than women who have given birth to a child. Significantly more ever-married men have adopted children compared with never-married men or women in either marital status. Women who have ever used infertility services are more likely to have adopted compared with women who have not used these services. Men who have adopted are more likely than men who have not adopted to have also fathered a child. Hispanic women are significantly less likely than non-Hispanic women or men of any race or ethnicity to have adopted children. Women with incomes below 150% of the poverty level are significantly less likely than women with higher incomes or men, irrespective of poverty status, to have adopted children. The percentage of infants relinquished by never-married mothers has declined to 1.0%, or fewer than 7,000 infants annually.