The U. S. space program has produced an enormous amount of data useful to environmental studies. Much of the launch noise data, however, is lacking correlation with such propagation influences as meteorological conditions and terrain effects. Thus, otherwise identical noise sources, such as the Space Shuttle, yield wide variations in measured and predicted launch noise. In addition, adequate criteria for assessing launch noise impacts remain an elusive issue within the several agencies and departments responsible for the evaluation of proposed new generation launch vehicles and possible locations for future space launch facilities. In order to develop a site selection criterion based on launch noise for the proposed Hokkaido Space Center, the limited acoustic, meteorological, and terrestrial information available from launches in Florida and California was evaluated, correlated, and scaled to designated launch vehicles and potential sites. The resulting launch noise site selection methodology was used in locating an acceptable site for both equatorial and polar orbit launches while providing consideration for facility support buildings and the surrounding region of potential acoustic impact.