Millenials have overtaken Babyboomers by nearly 4 million to become the largest generation in the United States. With a current population of around 79 million, the Millenial generation is expected to grow to 81 million over the next 20 years because of migration, according to the US Census Bureau's latest estimates.
The boundaries that define generations are not universally agreed, and yet these boundaries carry important implications in business and government. The size, financial security, and general health of each generation shapes everything from marketing campaigns to insurance and social welfare benefits to transportation and health services planning.