The 25 most hungover cities in America

2016 has officially commenced, and it's time to move forward into the new year - after you recover from your New Year's Eve festivities, that is.

To get an idea of where Americans are most likely to be hungover today, we constructed the Business Insider Hangover Index.

Our two main sources were the CDC's 2011 and 2012 Behavioural Risk Factor Surveillance System (BRFSS), an annual survey of Americans' health habits, and the Census Bureau's 2013 County Business Patterns (CBP) program, which tracks the number and size of businesses in counties and metropolitan areas across the country. A more detailed description of the methodology can be found here.

The Midwest proved to be the most hungover region in America, with multiple cities from Kansas and Montana dominating the top of the list. Scroll through to find out if your city may be partying a bit too hard.