We examined association between late stage diagnosis and individual- and community-level characteristics among pediatric Hodgkin lymphoma (HL) and rhabdomyosarcoma (RMS) patients. We obtained Children's Oncology Group (COG) data from 1999-2021 including summary stage (local (L), regional (R), distant (D)), tumor subtype, demographics, and ZIP code at diagnosis. We linked ZIP codes to county-level redlining scores (C,D=greatest redlining), Child Opportunity Index (COI), and measures of segregation (racial dissimilarity indices (DI)). Logistic regressions calculated odds ratios for late stage diagnosis, and by race within tumor subtype. 5,933 HL and 2,800 RMS patients were included. Late stage diagnosis of HL was correlated with Black race (ORDistant(D) vs regional/local(R&L)=1.38 [1.13-1.68]), being uninsured (ORD vs R&L=1.38 [1.09-1.75]), and subtype (Nodular sclerosis vs Other HL: ORD vs R&L=1.64 [1.34-2.01], Untyped: ORD vs R&L=1.30 [1.04-1.63]). Late stage rhabdomyosarcoma was correlated with bilingual households (ORDistant/regional(D&R) vs local(L)=2.66 [1.03-6.91]) and tumor type (Alveolar vs Embryonal ORD vs R&L=6.16 [5.00-7.58]. Community-level factors associated with late stage HL were greater Black (OR80-100%=1.83; 95% CI=1.11-3.02) and Hispanic (OR60-79%=1.30; 95%CI=1.05-1.60) DI. Late stage diagnosis for RMS was associated with more redlined census tracts within counties (OR=1.54; 95% CI =1.02-2.35) and low/very low COI (OR=1.21; 95% CI=1.02-1.45). Novel markers of community deprivation, such as redlining and racial segregation, likely affect cancer outcomes for children with HL and RMS in this first disparities study using COG registries. The interplay of multilevel risk factors provides important consideration for efforts to improve early detection of pediatric cancer diagnosis.