The Census Bureau recognizes a range of sociodemographic and other groups as hard-to-count. The following persons, many served or engaged by nonprofits, are at risk of being undercounted in the 2020 census. These individuals are considered hard-to-locate; hard-to-contact; hard-to-persuade; and/or hard-to-interview.
- Complex households including those with blended families, multi-generations, or non-relatives
- Cultural and linguistic minorities
- Displaced persons affected by a disaster
- Lesbian gay bisexual transgender queer/questioning persons
- Low income persons
- Persons experiencing homelessness
- Persons less likely to use the Internet and others without Internet access
- Persons residing in places difficult for enumerators to access, such as buildings with strict doormen, gated communities, and basement apartments
- Persons residing in rural or geographically isolated areas
- Persons who do not live in traditional housing
- Persons who do not speak English fluently (or have limited English proficiency)
- Persons who have distrust in the government
- Persons with mental and/or physical disabilities
- Persons without a high school diploma
- Racial and ethnic minorities
- Renters
- Undocumented immigrants (or recent immigrants)
- Young children
- Young, mobile persons
