This study reports the nutritional status of children attending daycare centers in the Municipality of São Paulo, Brazil. A representative sample of 827 children under 84 months of age was evaluated. Anthropometric measurements and information on socioeconomic characteristics and morbidity were collected. The most prevalent nutritional deficit was stunting (7.0%; 95%CI: 3.60-10.40). Univariate analysis showed a significant association between stunting and age (< 24 months), OR = 2.10 (95%CI: 1.11-3.98); diarrhea one month prior to the data collection, OR = 2.84 (95%CI: 1.42-5.66); mother's or caregiver's schooling (< 3 years), OR = 3.87 (95%CI: 1.10-13.68); number of household members (> 7), OR = 3.02(95%CI: 1.46-6.22); and number of siblings (> 2) OR = 4.81 (95%CI: 1.72-13.44). In the multivariate analysis, only diarrhea one month prior to the data collection, OR = 2.54 (95%CI: 1.20-5.38) and > 2 siblings, OR = 7.40 (95%CI: 2.20-24.93), remained associated with stunting.