Estimates of future population of cities are subject to a wider margin of error than those for areas such as counties or river basins because of the additional variable of possible annexations to the cities. In the case of Dallas, Independence, and Monmouth discussed in this report, no attempt has been made to separate the portion of their past growth due to annexations from the portion due to development within previous boundaries. It is assumed, in the following projections, that future growth will represent about the same mixture as it has in the past of (1) annexation and (2) more intensive development of the older area.