West Europe (50,000). Favorable demographic development changed around the year 1980 when the number of births started to decline together with immigration decline. Around the year 1990 (Slovenian independency) migration flow became even negative for some years. Very high share of older population is now the most evident consequence of postwar demographic changes. Numerous after war population generations are in the beginning of the retirement period and after some years will be main reason for the high rise of number of annual deaths. The annual number of deaths (under 20,000 in the last decade) is expected to grow to more than 30,000 around the year 2020. Because the number of annual births in Slovenia declined from more than 30,000 in the early eighties to less than 18,000 in the first years of the new millennium further decline of the women in fertile ages is expected. In the period 1995–2007 natural growth in Slovenia as well as external population migration of population with Slovenian citizenship were negative. Population growth in Slovenia depends entirely on external migration of foreigners. Absolute number of population in Pomurje region after II. World War declined. Emigration was stronger than natural population growth. Emigration streams were directed to the Slovenian industrial centers and afterwards into the West Europe also. Recent negative natural growth is higher, also because of emigration of younger population. Population decline according to negative population growth is little less than 5,000 inhabitants (in the period 1996–2007). Together with migration loss Pomurje lost more that 5,000 inhabitants in this period. Pomurje region migration balance in the last three years is positive due to external migration, but is still negative with the other Slovenian regions. The long term future population change depends especially on future total fertility rates. Total fertility rate in Slovenia (Pomurje) is now only 1.3 far under the rates that would enable population stagnation (little bit over 2). The other problem of the region Pomurje is weak population potential. Population potential is population age and sex structure as a result of past demographic changes. Population age structure of the Pomurje region population in the year 2008 is presented on the picture number two. Very high share of the population in late fifties is obvious and cause of expected future growth of annual deaths. Today’s life expectancy is 75 years for men and 82 years for women. Future growing number of annual deaths is inevitable and does not depend on other possible population changes in migration or total fertility rates. The other negative consequence of weak population potential is declining number of women in fertility period due to past decline of birth. After the year 1980 every generation was less numbered (picture number 2). Because of that the number of girls coming into the fertile period will be lower every year. The expected number of women in the most fertile ages (20–34 years according to Slovenian age specific fertility rates) is presented on the picture number 4. Mortality and migration are not included in the estimation. Estimation is made for already born girls. The total population of Pomurje region women in the most fertile period is something under 13,000, and the number of annual births is around 12,000. We estimate the number of women in the most fertile period to decline under 10,000 before the year 2020 and under the number of 8,000 in the year 2028. What will be the number of annual birth then?. Valuation of demographic potential showed expected negative population changes in the future. This can be changed only with growth of the total fertility rates and in the short time period only strong and not expected immigration would enable the population growth. The results of population projection by natural growth are presented on the table number two and