oa East African Geographical Review - Net migration patterns over Tanzania

Volume 1969, Issue 7
  • ISSN : 1937-6812



In the absence of a national registration of births and deaths, and the lack of comparability between population census figures at the lower levels of enumeration. it is impossible to establish for Tanzania the spatial variation in the net gain or loss in population resulting from migration.1 This is likely to remain so for several decades to come and it seems worthwhile, therefore, to try to estimate the relative net migration patterns from the available census data. Indeed such an attempt to map areas of net in- and out-migration has already been made for Ghana.2 Using the 1960 census data. Hunter found a correlation, at Local Council level, of r = +0.789 between immigration (as represented by persons 'not born in this locality') and sex ratio of the 15-44 years age group (i.e. 'economically active persons'). He then proceeded to use adult sex ratio as the basis for delimiting net in- and out-migration regions in Ghana.3 Furthermore on a local scale, Hunter has plotted adult sex ratio by Chiefdoms to identify the varying emigration rates within Nangodi, northern Ghana.4 In a similar way, District variations in total sex ratio have been related to patterns of in- and out-migration in Tanzania: high sex ratios being associated with urban centres and rural areas offering wage employment, and low sex ratios associated with areas of outmigration.5

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