As the US census charts a decade of dramatic changes, two congregations have lived it. Matt Friend is a proud native of Charleston, West Virginia. But the lead pastor of Bible Center Church will admit that the city has changed. “There’s definitely a lot less traffic now,” he said. His home city has the dubious distinction of being the fastest-shrinking city in the United States, according to the US Census. In 1960, Charleston had a population of 85,796. The city has gotten smaller every decade since and now has fewer than 50,000 people. Preliminary census data released in April suggests…