Roughly 60,000 Sacramento couples will share a home but not a marriage certificate this Valentine's Day.
The number of unmarried couples living together in the Sacramento region grew by 18,000, or 40 percent, from 2000 to 2012, double the rate of population growth, according to new census figures.
The same trend is happening nationwide as Americans put off marriage and try living with someone before walking down the aisle, federal data show.
Roughly one in eight couples in the Sacramento region living together were unmarried in 2012, compared to one in 10 nationwide, census figures show.
Sacramento's cohabitating, unmarried couples are slightly less likely to have a bachelor's degree or earn as much money as their married counterparts, census figures show. Their ethnic and racial makeup is similar to the region as a whole.
This map shows the percentage of couples living together unmarried in each of the region's census tracts. Click a location for more details about it.
Note: About 40 percent of single partners living together get married within three years; another 32 percent stay together but don't get married; the rest break up, according to a recent federal study.