Objectives: To examine the state of nutrition among fifth-grade students at primary schools in Požega-Slavonia County in the school year 2021/2022. Study Design: Cross-sectional survey Participants and Methods: The respondents are fifth-grade students at primary schools in Požega-Slavonia County. During physical examination in the outpatient clinics of school medicine, body weight and height measurements were taken, and body mass index was calculated. Nutrition status was determined based on BMI. Data on gender and age, place of residence, education and work status of parents, physical activity, and eating habits were taken from medical documentation. Results: The research included 551 students (308 boys and 243 girls) in the fifth grade, more from the countryside (314) than from the city (237). There were 27 malnourished (4.9 %), 360 (65.3 %) normal, 90 (16.3 %) overweight, and 74 (13.4 %) obese children. Out of a total of 278 (50.5 %) respondents who are physically inactive, there are significantly more, 50 of them (68 %), in the obese group and 47 of them (52 %) in the overweight group. Respondents who do have breakfast are significantly more in the obese group, 43 of them (58 %), or in the overweight group, 49 of them (54 %). The study did not find a significant difference in nutrition with regard to gender, nor did it establish a connection between the socio-economic status of parents and children’s nutrition. Conclusion: From the obtained results, it can be concluded that the largest number of respondents belongs to normal nutrition (65.3 %). The frequency of overweight and obesity in Požega-Slavonia County does not differ from other parts of Croatia and the world.