In response to interest from the National Professional Development Center on Autism Spectrum Disorders (NPDC-ASD), NECTAC (National Early Childhood Technical Assistance Center) queried Part C and Section 619 Coordinators regarding screening measures, diagnostic instruments and procedures, and trends in identifying young children with ASD under the age of five years. NECTAC collaborated with the NPDC-ASD to develop and refine a series of questions and then to conduct an on-line survey during a two week period in November 2008. Individual states are not identified in this report. Responses were received from a total of 33 respondents in 27 states/jurisdictions scattered throughout the United States and the Pacific. Of these respondents, 14 were Part C program coordinators, 12 were Section 619 program coordinators, and 7 indicated that they represented both programs. Twelve states had respondents from both Part C and preschool coordinators. First, respondents were asked to identify the screening measures/tools that were being used within their states to screen young children for ASD. Respondents could select all that applied from a list of measures typically used for screening young children for ASD that are shown in Table 1. Respondents in 89% (n = 24) of the states that participated noted that the Ages & Stages Questionnaire: Social Emotional (ASQ-SE; Squires et al., 2002) was used to screen for ASD. Respondents in 81% (n = 22) of the states that participated used the Modified Checklist for Autism in Toddlers (M-CHAT; Robins et al., 2001). Most respondents (n = 25, 93%) indicated that more than one screening tool is being used in their states. (Contains 2 tables and 2 figures.)