The world is aging. This study attempts to add to the literature that describes models for the analysis of aging populations. It will describe modifications on a rather basic model – the Solow Growth Model, making an attempt in a rather new field of economic growth theory. It first defines the traditional Solow Growth Model and its main ideas. Then, it develops an augmented version of the Solow Growth Model that takes in the composition of the population in the analysis as inputs and predicts capital per worker, which is directly related to growth rates. The augmented model is able to predict different growth rates in populations that have different young-old proportions and suggests a more precise way of capturing the savings rate in a population than the original model. Specifically, the savings rate now changes with demographic statistics, which is also more relevant to our use in an aging society.