Viewing on a mobile device? Click to see a map of marriage trends in the United States or data showing where marriage is on the decline.

The number of Americans who have always been single and will never marry is at a historic high. According to a 2014 Pew Research report, “about 20% of Americans older than 25 had always been single in 2012, up from 9% in 1960.” And if the winds keep blowing in this direction, their analysis suggests that 25% of millennials will never marry.

Why is marriage on the downtrend? It could be that marriage is starting to lose the status it once had, or that unemployment is preventing people from settling down. Though wedding bells might not be ringing as often throughout the country as a whole, there are still some places where marriage is very much alive and thriving.

Genealogy site mooseroots.com used census data to see how marriage rates have changed in the United States over time — and as it turns out, tying the knot has been going out of style.

Click on the arrow at the bottom left of the heat map to see how the number of married people has fluctuated since 1970.

Taking a closer look at the United States, you’ll notice that at 16.7%, the District of Columbia has seen the biggest drop in married couples since 1970.

Source: Minnesota Population Center. National Historical Geographic Information System: Version 2.0. Minneapolis, MN: University of Minnesota 2011. Data is visualized on places.mooseroots.com