years of age the comparison is 63.1 percent and 55.4 percent respectively. 

 However, in individual cases there is probably adequate evidence that 

 some attention should be devoted to this relationship when planning for 

 future facilities or joining a cooperative district. 



Table 14. Relation of Trend in Population (1950-1960) to Distribution 



of the 1960 Population by Age Groups, for Districts Having 



a Population Under 1,000 in I960.* 



* From U. S. Census. 



Twelve suburban districts were selected from the Concord, Man- 

 chester, Nashua, and Haverhill, Massachusetts areas, and compared with 

 ten rural districts declining more than ten percent, and with all districts, 

 on the basis of distribution of population by age groups (Table 15) . The 

 twelve districts increased an average of 31.2 percent from 1950 to 1960. 

 The distribution of the population by age groups for these twelve dis- 

 tricts was not significantly different from all districts. The suburban 

 districts have a slightly larger proportion of the inhabitants under 

 twenty-five years of age and a somewhat smaller proportion sixty-five 



Table 15. Distribution of Population by Selected Age Groups 

 for Suburban Districts Compared with Rural Districts. 



Percent of Total Population 



Age Groups 



12 suburban 

 districts 



10 rural 

 districts* 



AU152 

 districts 



Under 15 

 Under 25 

 25 to 64 

 65 and over 



33.4 

 44.4 

 44.8 

 10.8 



28.2 

 41.3 

 46.0 

 12.7 



31.2 

 42.7 

 44.8 

 12.5 



* Declining in population and having a large proportion of taxable wealth owned 

 by permanent residents. 



20 



