In this study, a numerical methodology based on combined finite element and finite difference is presented for realistically quantifying the non-uniform corrosion penetration depth along the perimeter of the rebar in concrete exposed to chloride environment. Moreover, two new non-uniform corrosion scenarios representing the spatial distribution of corrosion penetration depth along the rebar perimeter are also presented. The method comprises determination of spatial and temporal evolutions of total chloride content (TCC) and time-to-corrosion initiation on the surfaces of rebars and estimation of time-dependent corrosion penetration depth at locations where TCC has reached the threshold value. Spatial distributions of corrosion penetration depth along the perimeters of rebars are observed to be either complete or incomplete, and the spatial location of maximum corrosion penetration depth is found to be different for corner and middle bars. Keywords: Chloride Ingress, Corrosion, Finite Element Modeling, Steel Reinforced Concrete.