The article is devoted to topical issues of statistical assessment of migration activity and security, as well as assessment of its impact on the socio-economic development of certain regions. The authors of the article draw attention to the fact that any territorial movement of people has quite definite and not always harmless outlines that pose new challenges to society. National security certainly includes a migration component. Based on the above-mentioned it becomes necessary to measure the given social phenomenon. The goal of the research is to analyze methodological issues of statistical measurement of migration security. Methods of theoretical research are applied in the form of generalization, comparison and special analytical procedures. The concept of migration security is clarified, recommendations are given on the formation of private and integral quantitative indicators and monitoring of key aspects of migration security. The material may be useful in the development of migration policy, lectures on demographic statistics. The article provides a review of the literature on the problems of migration security. It is noted that migration security covers two basic concepts. On the one hand, this is security in general, and, on the other, security considered in a specific application area, that is from the point of view of ongoing migration processes. The authors note that this concept may include ensuring the safety of: migrants; indigenous people; the entire civil community; state, etc. The article presents the possible consequences of migration (intensive outflow of population from certain regions of the country, leading to demographic and socio-economic attenuation of territories; intensive influx of non-indigenous population, causing the loss of historical foundations and traditions, which can lead to the loss of part of the original territory of residence; infringement of various rights of migrants; aggravation of the situation on the labor market; illegal migration activity; migration crime). To measure migration security, the following indicators are proposed: the coefficient of migration growth (decrease) of the population; coefficient of arrival intensity of non-indigenous population, labor migrants; the number of recorded cases of violation of the migrants rights, the proportion of migrants who suffered violations of various rights; share of the labor market covered by migrants; number and proportion of illegal migrants; the number of recorded crimes of various types among migrants, the number and proportion of migrants brought to justice and deported from the country. At the same time, the authors raise the question of substantiating the integral indicator of migration security. The problems of measuring migration security in the modern world are of particular relevance, since migration processes on our planet are making an increasingly significant contribution to the transformation of the foundations, traditions and values of mankind at various levels of knowledge.