Limited research has looked at the distribution of multiple categories of children under the age of 18 residing in same-sex unmarried and same-sex spousal households. This paper specifically examines the socio-demographic characteristics of same-sex couple households with children, using the 2009 American Community Survey internal data files. We describe the distribution of type of children (biological, step, adopted, non-related, or a combination of types of children) across four household forms: married opposite-sex; unmarried opposite-sex; same-sex unmarried; and same-sex with a spouse. Then, we discuss the characteristics of the households containing each type of children. Our primary results show that a larger percentage of non-related children live in unmarried same-sex compared with married opposite-sex households. We also find that same-sex couples with only adopted or only step children have significantly higher incomes than both married and unmarried opposite-sex households.