Aim. The purpose of research is to analyse the populations of Transcarpathian region, finding out, as ability of surnames changes to differentiate the populations of area level as compared with regional. Methods. The base of total list of surnames of the population of Transcarpathian region is used. The way of description of genetic structure of the population offered I. Barrai. Material is analysed with use of methodical approaches developed of Е.В. Balanovskaya. Results. Population genetic ratings for area as a whole - index of isonymy (І=6,1×10-4), index of inbreeding (FST=15,2×10-5), migration index (v=12,8×10-4), rate of names diversity (a=16,4×102), index of entropy (H=12,8) and redundancy of surnames (R=36,7), as well as for thirteen areas of Transcarpathian region are designed. Conclusions. Index isonymy, inbreeding and migration in a few times above in the populations of area level, than regional, the rating of diversity in area populations has more low values, than in regional population.
Keywords: quasigenetic markers, population, isonymy, inbreeding, migration.