Malaria has continued to be a major public health challenge in Nigeria with the under-five aged- children and pregnant women being the most affected. The recent epidemiological profile of the disease is vigorous owing to the continuous variant in various determinants however, there is need for periodic re-evaluation. The study aimed to determine the frequency of malaria infection among under-five age children and the effect of various determinants. In this cross-sectional study, 160 in and outpatients aged below 5 years with fever or history of fever within 72hours were enrolled. Relevant information was obtained and recorded using a questionnaire. Thick blood films were prepared from a finger or heel prick for each of the patients and subjected to microscopy. The frequency of malaria infection was 119(74.4 %.) Age, sex, socioeconomic class, temperature at presentation as well as ownership of insecticide treated nets had a significant effect on the frequency of malaria infection. Only P. falciparum was seen in all the positive slides. The parasite density was generally high with 67(56.3%) having parasite densities <100/μl and only 8.4% had a parasite density of ≥1000/μl. Parasite density increased meaningfully with increasing age as well as other studied factors had significant effect on parasite density. A Prevalence of malaria infection was high in the population studied. It is characterized by high density parasitaemia and hence the need to interpret positive results with carefulness. There is need to toughen and scale up countless malaria control programs while ensuring proper implementations of programs and activities through active monitoring and assessment.