The endemicity of schistosomiasis depends to a large extent on the presence of appropriate freshwater snail species with latent infection, and the quality of the microhabitat of the snails may favour or hinder their development and growth. Monthly in situ determinations of water temperature, pH, total dissolved solid (TDS), conductivity and dissolved oxygen were carried out. Monthly sampling of snails was also conducted. The planorbid snail species morphologically identified were Gyraulus costulatus, Biomphalaria pfeifferi, Bulinus globosus, B. senegalensis, B. jousseaumei, Segmentorbis augustus, Ferrisia sp and Lymnaea natalensis. The most abundant snail species was Gyraulus costulatus (62.2%). Snail density correlated positively with dissolved oxygen (r = 0.349; P = 0.266), while a negative relationship occurred between snail density and conductivity (r = −0.064; P = 0.843). None of the B. globosus examined shed cercariae, while 12.5% of B. jousseaumei shed cercariae. The occurrence of B. jousseaumei in this study proves its presence in Nigeria and suggests its combined roles with B. globosus in the transmission of urogenital schistosomiasis in the endemic rural communities of Yewa North Local Government Area of Ogun State, Nigeria. Further studies on the geographical distribution of B. jousseaumei are recommended for better understanding of its epidemiological contribution to schistosomiasis in Nigeria.