We calculate correction coefficients for development rates of senior long-term care facilities by city types and verify their accuracy in the 2025 reform scenario for each wider senior care service area. From the 8th long-term care insurance service plan for 47 prefectures, we have determined the demand for each type of care service and the supply of long-term care facilities in each area. The results show that there are significant differences in the averages of rates of users in the care services by city types and that the city-specific correction coefficients increases the accuracy of estimations for nursing homes.