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Fifty faecal samples each were collected randomly from free range fowls of varied ages in five communities in Choba, Obio-Akpor, Local Government Area of Rivers State to determine the prevalence of coccidiosis in free range fowls. Samples were collected in sterile vials (between 6.00 and 7.00 a.m.) and analysed in the laboratory using the concentration (sedimentation) technique. Results obtained showed an overall prevalence (54.2%) of coccidiosis in the 1-6 weeks aged chicks (p0.05). On the community level; the prevalence of the infection showed relatively low; (4,0%), Okocha; (12%), Rumuchakara; (11.2%) Owhipa; (8%), Ndidor and (8%) for the University of Port Harcourt Community. Build-up of immunity in older fowls was attributable to exposure to repeated infections under natural conditions; thus the observed age-related decline in prevalence. The percentage of infected fowls compared to the uninfected was significantly different (p