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A microzonation methodology is developed for Balıkesir based on available geological and geotechnical data and applied for microzonation of the areas defined as BPH (the area covering Bahcelievler, Plevne and Hasan Basri Cantay districts) and 18-02 in Balikesir. Acceleration records are simulated compatible with target acceleration spectra estimated for Balıkesir design earthquake. Representative soil profiles are modelled by a grid system for each cell based on geotechnical data. Spectral accelerations on the ground surface are calculated by two different approaches using site response analysis and NEHRP amplification factors. Microzonation maps are produced with respect to ground shaking intensity taking into account the variation of the spectral accelerations calculated based on these two procedures.