As far as I know, there isn't just one method that will make a church grow. Church growth is primarily a result of church health.
Another huge factor is your demographics. It is easier to grow churches in dense areas of population verses in areas with less people.
One of the best books ever written on church growth was The Purpose Driven Church by Pastor Rick Warren. It deals with all of the basic principles for growing a church. Here is a short summary of the book:
- First, you must turn your community into a crowd.
- Secondly, you must turn that crowd into a congregation. (Get them to visit a worship service.)
- Thirdly, turn the congregation into a committed group.
- And finally, turn the committed into a core group of volunteers and leaders.
On a different note, probably the two key departments in your church that effect growth is your music ministry and your children's ministry. Focus on both of these ministries for highest returns on your visitors.
Brian Cutshall has a seminar on DVD called "Structuring Your Church for Growth," that will give you more in depth details on this subject.
Here is the link in case you are interested: Structuring You Church for Growth