Malnutrition is the main cause for mortality and morbidity among under five children in India. The aim of study was to assess and compare the nutritional status of under-five children among urban community (Peetalnagri) and rural community (Bagarpur) by using MUAC i.e., mid upper arm circumference in selected community at Moradabad. A quantitative research approach was used and research design adopted for the study was Non-experimental (comparative) research design. A total of 120 under-five children were selected by purposive sampling technique. The structured questionnaire was prepared to collect the data regarding demographic variables and the technique used for data collection was biophysical measurement (mid-arm circumference). Researcher found that majority of children in both groups i.e., urban community 48.33% (29) and rural community 70% (42) have mild malnutrition. Percentage of severe malnutrition in both groups is nil. Result revealed that rural area is having more number of malnourished under-five children as compared to urban area. In comparison, the researcher found that rural area has 25% more malnourished children as compared to urban area