This brief presents select characteristics of children and families served by Migrant and Seasonal Head Start (MSHS) programs (see Box 1) using data from the MSHS Study 2017 (see Box 2). This brief highlights child and family characteristics such as race/ethnicity, nativity status, household composition, and language skills. This information may help Head Start better tailor services to the needs of MSHS children and their families and work collaboratively with MSHS programs around continuous program improvement. Understanding the characteristics of children and families participating in MSHS may also inform program decisions related to family needs, strengths, and resources as well as children's developmental contexts. This information may be important for MSHS programs to consider as they identify the best ways to serve their communities. For more information about the characteristics of MSHS children and families, see the MSHS Study 2017: Data Tables. (author abstract)