By Adelle M. Banks

At Alfred Street Baptist Church in Alexandria, the pews start to fill more than half an hour before the service begins.

Ushers guide people of all ages to their seats. Some stand and wave their hands in the air as the large, robed choir begins to sing.

In September, after using a dozen wired overflow rooms, the church will start its fourth weekend service.

So many people attend, church leaders are now asking people to limit their attendance to one service.

“Pick your service,” said the Rev. Edward Y. Jackson, an assistant to the pastor, at the start of a recent service. “Come in, come early, get your parking space so we can all enjoy and worship God together.”

A recent Pew Research Center survey found that Christians are losing their share of the U.S. population, dropping to 71 percent in 2014, down from 78 percent in 2007, with young people leading the exodus.

But historically black denominations have bucked that trend, holding on to a steady percentage of members during that same period.

As significant, the share of younger African-Americans who affiliate with historically black churches is similar to that of older churchgoers.

There are numerous reasons why some black churches retain their members, but, most prominently, the church has played a historic role in black life that has fostered a continuing strong black Protestant identity.

Members and visitors at Alfred Street believe the church’s holistic ministry — the preaching, the singing and the community outreach — are what draw them in and keep them there.

“I think black churches have always been very pivotal in social movements and outreach,” said Kelli Slater, 20, a Howard University student who was visiting Alfred Street at the invitation of her older sister. “I think black churches do a whole lot more than religion.”

In late July, the church held its annual “Brother’s Keeper” outreach project in which it gave 2,000 low-income children backpacks and winter coats and provided health screenings for their families.

In December, some members marched from the church to a local courthouse in support of the “Black Lives Matter” movement.

The Rev. David Daniels III, a church history professor at McCormick Theological Seminary in Chicago, said mostly black megachurches are gaining adherents even as smaller, aging congregations have dwindling numbers in their pews.

“In some cities, there are some congregations, often with younger pastors, who’ve been able to develop ministries that are able to attract teens and young adults,” said Rev. Daniels, a minister of the Church of God in Christ.

The Rev. Howard-John Wesley, 43, has been pastor since 2008 of Alfred Street, which is affiliated with the historically black Progressive National Baptist Convention and National Baptist Convention USA.

He introduced a monthly “Come As You Are” Wednesday night service for young adults as well as his “Hour of Power” summer Sunday services.

In the last seven years, he said, his church membership has grown from 2,300 to 7,100 people and 80 percent of the new members have been in their mid-30s to early 40s. Total attendance on recent weekends has surpassed 3,000.

“We decided to be very concise with time,” said Rev. Wesley, who knows families need time for their kids’ sporting events. During the “Hour of Power,” he watches a 60-minute clock placed strategically at the back of the sanctuary. “The No. 1 thing people ask when they’re invited to a church is ‘What time do you get out?’”

The Rev. Kip Banks, interim general secretary of the Progressive National Baptist Convention, said societal issues such as police brutality as well as efforts to be relevant to young adults — from live-streamed services to marriage, health and mentoring ministries — continue to draw African-Americans to black churches.

“The church has always spoken to these issues, and the church is addressing these issues,” he said. “The black church is the place that’s always affirmed African-American life.”

But Rev. Banks and others note that black churches are not immune to the membership decline experienced by Christianity in general.

The Rev. Jerry Young, president of the National Baptist Convention USA, said, “There are a number of our churches that also are suffering.” 

Like the rest of the U.S. population, some African-Americans are disaffiliating. The recent Pew survey found that 18 percent of African-Americans now describe themselves as atheist, agnostic or “nothing in particular,” compared with 12 percent in 2007. The share of black people who fit in the “nothing in particular” category rose at about the same rate as the general population, said Greg Smith, Pew associate director of research.

There are prominent examples, such as NFL running back Arian Foster who told ESPN that he does not believe in God, telling an interviewer “faith isn’t enough for me.”

Still in his new book, “Between the World and Me,” author Ta-Nehisi Coates, a prominent black nonbeliever, writes his son has some misgivings about turning his back on the church he grew up with.

“I thought of my own distance from an institution that has, so often, been the only support for our people,” Mr. Coates wrote. “I often wonder if in that distance I’ve missed something, some notions of cosmic hope, some wisdom beyond my mean physical perception of the world, something beyond the body, that I might have transmitted to you.”

Meanwhile, Richard Wair, the patriarch of a family that has attended Alfred Street for more than a century, remains hopeful that the next generation of African-Americans will continue the churchgoing tradition.

“As an older person, seeing young people coming in, I feel great, I feel encouraged,” said the 84-year-old deacon emeritus. “They have to take up where we left off.”