Objective: To determine the prevalence of unmet social needs (USN) in a pediatric emergency department (PED) patient population and examine disparities in USN by self-selected language and patient demographics. Methods: We surveyed a convenience sample of English- and Spanish-speaking caregivers of patients <18-years-old presenting to a free-standing children's hospital in Salt Lake City, Utah. In the caregiver's self-selected language, the pediatric version of the Screener for Intensifying Community Referrals for Health (p-SINCERE) assessed patient demographics and 10 areas of social needs. The primary outcome was presence of USN. Descriptive statistics compared 1) self-selected languages and 2) absence vs presence of USN. Patient and caregiver-level risk factors associated with USN were identified using multivariable logistic regression. Results: Of the 10156 patients seen in our PED from 04/01/2021 to 08/03/2021, there were 9922 eligible, 5357 approached, and 3987 enrolled caregivers. Of the 3987 caregivers enrolled, self-selected language was English for 3662(91.8%) and Spanish for 325(8.2%). There were 1680 enrolled caregivers with ≥1 USN, representing 39.7% of English-speaking and 70.2% of Spanish-speaking caregivers(p<0.001). The odds of having ≥1 USN was more than 2 times higher in Spanish-speakers than in English-speakers after adjustment. Conclusion: Unmet social needs are common for families presenting for care to a PED, especially among Spanish-speaking caregivers. Furthermore, this study demonstrates disparities in limited English proficiency (LEP), race/ethnicity, and child insurance status. These findings support the practicality of utilizing the PED as an access point to initiate social need screening and referrals to address SDOH and health disparities.