Beth and Robert Young show off their wedding rings after renewing their vows in Saginaw County on Feb. 12, 2016.

BY JULIE MACK

In 1960, 79 percent of Michigan households were headed by a married couple, according to the U.S. Census Bureau. In 2016, it's 47 percent.

In a trend reflected nationwide, marriage is giving way to a plethora of other living arrangements, especially for young adults.

Here's a look at some of the numbers driving the changes, using U.S. Census data.

We'll begin with two online databases that offer county-level data based on the Census Bureau's estimated five-year county average for 2012-16. The first database shows the percentage of "never marrieds" for different age groups in each county.

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The second database looks at living arrangements for Michigan residents age 18 to 34. It shows the most common living arrangement for that age group is young adults living with their parents.

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To compare all counties in either database, click on "all counties" when doing the search. To compare the counties by arrest rate, click on that column heading. Click once for a top-to-bottom sort; click twice for a bottom-to-top sort.

Now let's look at statewide and national trends.

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1. Today's 25- to 34-year-olds resemble 18- to 24-year-olds in 1967

In 1967, 39 percent of 18- to 24-year-olds lived with a spouse, similar to the 43 percent of 25- to 34-year-olds in 2014, according to a 2015 Census Bureau report. Today, only 8 percent of 18- to 24-year-olds live with a spouse.

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2. The most common living arrangement for millennials: Living with parents

In 1967, almost nine in 10 young adults were living in just two arrangements, either with a parent or with a spouse, according to the Census Bureau. Today, it's much more diverse. While about 56 percent live with a parent or a spouse, the other 44 percent live in a variety of situations -- including those living with an unmarried partner, living alone or living with roommates or other relatives, such as a single parent with children.

Below is a map showing the percentage of millennials (age 20 to 34) who live with their parents; the darker the color, the higher the percentage.

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Keweenaw County in the Upper Peninsula and Leelanau County in the northwest Lower Peninsula have the highest percentage of young adults who live with parents -- 52 and 48 percent respectively. Missaukee County in the northwest Lower Peninsula has the highest percentage of millennials living with a space -- 37 percent.

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3. People are delaying marriage by average of six years compared to half-century ago

The biggest change in living arrangements since 1967 is related to the delay in marriage the Census Bureau says. On average, Michigan young adults wait more than six years longer to get married.

The above chart from the Michigan Department of Health and Human Services shows the median age of a first-time bride was about 20 in the mid-1960s and the median age of a first-time groom was about 22. Today, the median ages of first-time brides and grooms are 27 and 28 respectively.

One factor behind the delay in marriage: With many more people going to college, it's taking much longer for people to settle into a career, according to a 2015 Census report.

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4. More people are never getting married

Not only are Michigan residents waiting longer to get married, but a larger share are never marrying at all. In 2006, for instance, 6 percent of Michigan residents age 55 to 64 had never married. By 2016, the percentage for that age group had almost doubled to 11 percent.

Below is an interactive map shaded by the percentage of "never marrieds" in each county for all residents age 15 and older. You can click on a county to see the underlying data.

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Below is an interactive map shaded by the percentage of "never marrieds" in each county for all residents age 15 and older. You can click on a county to see the underlying data.

Wayne County has the highest percentage of "never marrieds" -- 41 percent of residents age 15 and older fall into that category.

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5. Cohabitation has increased dramatically

While people are not getting married at the same rate as the past, they are not necessarily alone. The Census estimates the proportion of 18- to 24-year-olds living with an unmarried partner is about nine times higher today than in the 1970s and about 15 times higher for 25– to 34–year–olds. Cohabitation has become so widespread that women now have about a 75 percent chance of living with a partner before marriage by age 30, according to the Census Bureau.

In 2016, 12 percent of Michigan residents age 20 to 34 lives with an unmarried partner. Among people age 35 to 64, it's 6 percent.

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6. Only 40% of younger parents live with a spouse

Young adults are also delaying childbearing but are not necessarily waiting for marriage to have children. In 2015, almost 43% percent of Michigan women who gave birth were unmarried, a record high and up from 24% in 1989, according to data from the Michigan Department of Health and Human Services.

"This is one reason we see an increase over time in young adults living with other relatives, because single parents are counted in this category," the Census Bureau notes.

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7. By race, blacks are most likely to never marry

Less than half of Michigan's African-American residents age 15 and older have married at least once. That compares to almost 70 percent of white residents, and as shown by this chart, the racial gap in marriage rates is growing over time.