ObjectiveTo investigate the impact of neighborhood‐level social vulnerability on pediatric tonsillectomy outcomes.MethodsThis single‐center retrospective cohort study included tonsillectomies performed on children aged 1 to 18 between August 2019 and August 2020. Geographic information systems were used to geocode addresses, and spatial overlays were used to assign census‐tract level social vulnerability index (SVI) scores to each patient. For categorical variables, two‐sided Pearson chi‐square tests were used, whereas for continuous variables, paired t‐tests, means, and standard deviations were calculated. SVI and its four subthemes were investigated using binomial logistic regressions to determine their impact on post‐T&A complications and readmissions.ResultsThe study included 397 patients, with 52 having complications (13.1%) and 33 (8.3%) requiring readmissions due to their complications. Controlling for age, gender, race, insurance status, surgical indication, comorbidities, obesity, and obstructive sleep apnea, postoperative complications were associated with high overall SVI (odds ratio [OR] 5.086, 95% confidence interval [CI] 1.128–22.938), high socioeconomic vulnerability (SVI theme 1, OR 6.003, 95% CI 1.270–28.385), and high house composition vulnerability (SVI theme 2, OR 6.340, 95% CI 1.275–31.525). Readmissions were also associated with high overall SVI (10.149, 95% CI 1.293–79.647) and high housing/transportation vulnerability (SVI theme 4, OR 5.657, 95% CI 1.089–29.396).ConclusionSocial vulnerability at the neighborhood level is linked to poorer surgical outcomes in otherwise healthy children, suggesting a target for community‐based interventions. Because of the increased risk, it may have implications for preoperative decision‐making, treatment plans, and clinic follow‐ups.Level of evidenceIII. Laryngoscope, 2023