The size of Tarrayoukyan is approximately 104.2 square kilometres. The population of Tarrayoukyan in 2011 was 218 people. By 2016 the population was 13 showing a population decline of 94.0% in the area during that time. The predominant age group in Tarrayoukyan is 50-59 years. Households in Tarrayoukyan are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Tarrayoukyan work in a managers occupation. In 2006, 13% of the homes in Tarrayoukyan were owner-occupied compared with 72.6% in 2011.