https://www.investopedia.com/terms/d/demographics.asp
What Are Demographics?
Demographics are socioeconomic characteristics of a population expressed statistically, such as age, sex, education level, income level, marital status, occupation, religion, birth rate, death rate, average age at marriage. There are a number of ways to collect demographic information such as a census and through Google Analytics. Demographics and interest’s data provide information about the age and gender of your users, along with the interests they express through their online travel and purchasing activities. Google Analytics is an easy way to track demographic information with 7 standard reports: demographic overview, age, gender, interests overview, affinity categories (reach), in-market segments, other categories (acquisition, behavior, and conversation metrics broken down in this category).
How Will Demographics Help Your Business?
Demographics can help businesses gain an insight into your customers. These insights will help your business see how different ages, races, sex, and income level affect consumers buying patterns. By using Google Analytics to track demographics you are able to use 7 standard reports along with custom reports. The 7 standard reports are: demographic overview, age, gender, interests overview, affinity categories (reach), in-market segments, other categories (acquisition, behavior, and conversation metrics broken down in this category) For each standard report Google Analytics uses acquisitions, behaviors, and conversions metrics to break down each demographic. Understanding standing demographics will help companies to understand their audience better along with knowing who may become a future customer, decide how much capital to allocate to production and advertising, and lowering advertisement cost.