This scholarly paper investigates urbanization and its environmental consequences in Nigeria. Urbanization deals with the mass movement of people especially potential jobs candidates from countryside to urban area due to high demand of labour at the place of destination. It is also population shift from rural area to urban area. This kind of movement often results to food insecurity from both the place of origin and the place of destination. Population growth is one of the impetuses of environmental deterioration due to the high influx of people to the urban areas from the rural areas as a result of higher employment opportunities in the urban areas, quality education, and advanced technology for communication and transportation systems, medical facilities among others. Urbanization leads to rapid sprawl, pollution, and environmental degradation. Data of the study were generated through content analysis from the findings of the previous works of other reputable scholars on the impacts of urbanization. Amongst other recommendations, the study recommends that government should accord serious attention on the agricultural sector in the rural areas so that it can serve as source of employment opportunities to the rural dwellers, entrepreneurship centres should also be built in the rural areas in order to absorb the available unemployed youths in the rural areas, there should also be planned and well managed urban expansion blueprints in order to curb environmental problems that spurred by urbanization.