Soils are the basic and most important resources of any people. Differences in soil’s physical and
chemical properties are related to the spatial distribution of land uses. Most of these human activities generate toxic
substances that are transported considerable distances away from source and become accumulated in soils,
sediment, water bodies and fisheries. Urban soils are largely affected by impact of urbanization whose consumptive
pattern is related to the social and economic aspect of the society. The study deployed contaminant factor (CF) and
geo-accumulation index (Igeo) to examine the differences in the urban soils of Lagos Mainland Area due to human
activities. The topsoils of the predominant human activities identified in the area were sampled and analyzed to find
out the differences in the soils due to the concentration of heavy metals among six land use types. The coefficient of
variation and standard deviation techniques were deployed to study the degree of variation and compare the mean
values of soil physical and chemical properties of twelve representative topsoils collected from six locations. All
metals analyzed showed significant (p<0.05) variation in the concentration of heavy metals, CF and Igeo among
land uses. Spatial distribution of heavy metals indicates areas of potential risks of harmful heavy metals in the urban
environment which enhances action plan for remediation and protection of the urban environment.