About the S-DHC

The Supplemental Demographic and Housing Characteristics File (S-DHC) provides tables that combine the characteristics of households and the people living in them. These tables supplement the data about households and people released in the 2020 Census Demographic and Housing Characteristics File (DHC).

Combining details about the structure of households and the people living in them required stronger disclosure avoidance techniques. Therefore, S-DHC tables are only available at the nation and state levels to both protect respondent confidentiality and provide quality statistics.

Subjects: Average household size and counts of people living in certain types of households:

• Average household size by age.*
• Household type (e.g. family or nonfamily households for the population in households).
• Population under the age of 18 years, by relationship and household type.*
• Population in families by age.*
• Average family size by age.*
• Family type and age for own children under the age of 18 years.
• Total population in occupied housing units by tenure (e.g., whether the home is owned or rented).*
• Average household size of occupied housing units by tenure.*

Geographies: Nation and state, including District of Columbia and Puerto Rico.

Note: The tables marked with an asterisk (*) are also available by the following race and Hispanic origin groups: White alone; Black or African American alone; American Indian and Alaska Native alone; Asian alone; Native Hawaiian and Other Pacific Islander alone; Some Other Race alone; Two or More Races; Hispanic or Latino; White alone, not Hispanic or Latino.​

​Maryland (XLSX) 

Maryland (PDF)​​​​