MFA is conducted to define the flow of aluminum with the following procedures: the definition of the system boundary, the determination of flow and stock, and the material flow illustration and interpretation. In the definition of system boundary, geographic boundary was set as Korea in the year 2007. In the determination of flow and stock, data are collected from different sources to calculate through the Aluminum cycle, which consists of five stages; material, semi-fabrication, industry, recycling, and disposal. The static data are collected primarily, in the case of lack of these data, related documents and the interviews of the experts are used. These collected data are calculated on the basis of mass balance principle. In the material flow illustration and interpretation, flow, process, and stock of Aluminum cycle are drawn. The flow of Aluminum in “material” entering the “semi-fabrication” is about 1,830 Kt/year with primary ingots (53%) and secondary ingots (47%). Counting in import and export, rolled (424 Kt/year), extruded (211 Kt/year), and casting process (965 Kt/year) in semi-fabrication flow into “industry”. It is retained as stock (288 Kt/year) excluding discard flow (657 Kt/year) of “industry”. The part of this discard flow (57%) is recycled as secondary ingot with imported Al scrap (467 Kt/year) in “recycling”. Finally, estimated 283 Kt/year is landfilled in “disposal”. To analyze the stock (ton) and stock density (ton/km²) of Aluminum in seven cities and nine provinces, allocation factors that are estimated considering characterization of each were used. The results of the stock is showed as follows; Gyeonggi-do(2,733Kt), Seoul(2,003Kt), Gyeongsangnam-do(720 Kt). However the stock density is identified to Seoul(3.31 Kt/ km²), Busan(0.93Kt/ km²) and Gwangju(0.58Kt/ km²) orderly. Therefore the waste management needs to focus on cities, in order to increase the recycling of end-of-life Al effectively.