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Comprehensive Plan Introductory Element <br />population data prepared by the County's Metropolitan Planning Organization (MPO). Those MPO <br />population data were developed by using a regression analysis based on recent growth trends. <br />Components of Population Change <br />Population growth is the result of two processes: natural growth and migration. Natural growth <br />consists of births minus deaths. While population with a high proportion of younger persons and/or <br />a high birth rate is likely to have positive natural growth, a population with a high proportion of <br />older persons and/or a low birth rate is likely to experience negative natural growth. Migration on <br />the other hand is the movement of people from one location to another. Many factors, including <br />economic, health, climate, and family contribute to the decision of a household to relocate to another <br />area. Table 1.5 identifies the components of growth in Florida, the Treasure Coast Region, and <br />Indian River County. <br />As indicated in Table 1.5, the proportion of growth due to net migration is high throughout the state, <br />region, and especially the county. In fact, a review of historical data indicates that, while migration <br />is declining as a growth factor for the state and the region, it is increasing for Indian River County. <br />TABLE 1.5 <br />Components of Po ulation Change 2000 — 2007 <br /># of natural <br />% of natural <br /># of net <br />% of net <br />increase <br />increase <br />migration <br />migration <br />-2,672 <br />-10.0% <br />29,482 <br />110.0% <br />Indian River <br />Count <br />4,468 <br />1.6% <br />282,456 <br />98.4% <br />Treasure Coast <br />3361010 <br />12.5% <br />2,361,533 <br />87.5% <br />Florida <br />Source: University of Florida, Bureau of Economic and Business Research <br />Characteristics of the Population <br />This section examines the current socioeconomic characteristics of the population. Since the <br />decennial U.S. Census is the traditional and most reliable source of these data, much of the data <br />reflect 2000 figures. Where more current and reliable data are available, they have been included. <br />Also, comparisons between the county, the region, and the state are presented. <br />Community Development Department Indian River County <br />13 <br />