According to the New York Times, a "large new data set" exists that indicates how geography can indirectly affect one's odds of marrying. Due to the political leanings of geographic areas, the likelihood of marriage varies. For example,
"Spending childhood nearly anywhere in blue America — especially liberal bastions like New York, San Francisco, Chicago, Boston and Washington — makes people about 10 percentage points less likely to marry relative to the rest of the country. And no place encourages marriage quite like the conservative Mountain West, especially the heavily Mormon areas of Utah, southern Idaho and parts of Colorado."
Residents of the United States, see how your area fares in this context by viewing the charts and interactive maps here.