The construct of belonging has been studied in many marginalised student groups yet has been understudied among students with intellectual disability. The present study used a large dataset from the United States to quantitatively investigate the construct of belonging among 7th to 12th grade students with the educational classification of "intellectual disability" (n = 670) who responded to a set of questions related to belonging in a nationally representative survey. The purpose of the study was twofold: (1) to identify the latent factors of belonging among students with intellectual disability to create a preliminary model and (2) use the preliminary model to compare belonging among students with intellectual disability with different demographic factors (e.g., race, sex, English proficiency). Exploratory factor analysis revealed a four-factor model of belonging and confirmatory factor analysis suggested the model was a good fit for the data, X[superscript 2] = 622.81, p < 0.001, RMSEA = 0.049, CFI = 0.879, TLI = 0.868. The study has implications for future avenues of research, including measurement development, exploring the developmental pathway of belonging, and the consequences of not belonging.