Washington State Early Support for Infants and Toddlers (ESIT) program provides early intervention services to children birth to three who have disabilities or developmental delays. This Washington State Education Research and Data Center (ERDC) report profiled ESIT services recipients by demographic characteristics, eligible reason, services received and outcomes. Secondly, we captured the growing trends of participation of ESIT program over time. We also described the critical steps children go through in ESIT program, including referral, evaluation, service plan development and review, outcome and transition out of the program. At last, we identified multiple birth children as an important sample population of ESIT recipients and analyzed their characteristics.