The purpose of this research is to investigate that whether Globalization, culture and purchase behavior differ across the three demographic factors (age, income and gender). Further study empirically substantiate that the globalization is impacting on consumer culture and purchase behavior of the Pakistani consumer. The data comprised of 250 respondents who are urban, educated, middle-class belongs to the different organizations operating in Karachi. The data was collected through structured and self-administered questionnaire. To test first objective Independent sample t test was used. Results shows that consumers who are young, having high income, and female are more inclined towards globalization, having western life style and conspicuous consumption as compare to old, low income group and male respectively. To test second objective the simple linear regression analysis was used. F and T statistics are significant against .05 level of significance shows that Globalization is impacting on consumer culture and purchase behavior. This paper provides understanding about changing life style and their consumption pattern of consumers in Karachi which would enable organizations to make more sound strategies to cater consumers.