Having come from a meeting today where church attendance figures were submitted, this article by Karl Vaters makes some helpful points.
While there is an average number of people attending a church, in reality attendances can fluctuate between, say, thirty-five an sixty people.
That difference makes a significant change in tone, and, realistically, most weeks those planning worship don’t know which ‘group’ they’re structuring for.

Vaters suggests:

Think relationally not programmatically
Highly programmed people have a hard time in small church leadership. Highly relational people do much better.
When numbers are small, and week-to-week percentage swings are highly variable, you can’t lead with a fill-in-the-boxes mentality.
In small churches, everything is done relationally. Our planning needs to be, too.
*and*
Leave a lot of wiggle room in your plans
Most planning principles are based on exact numbers. But when you don’t have exact numbers, you can’t plan that way.
Instead of saying “we need X number of ushers, greeters or nursery attendants”, talk with the members of your church about the importance of being ready for anything at a moment’s notice.

Read the whole post here.