Church Growth in Acts

So then, those who had received his word were baptized; and that day there were added about three thousand souls. (Acts 2:41 NASB)
And they, continuing daily with one accord in the temple, and breaking bread from house to house, did eat their meat with gladness and singleness of heart, praising God and having favor with all the people. And the Lord was adding to their number day by day those who were being saved. (Acts 2:46-47 NASB)
Believers were added to the Lord in increasing numbers--crowds of both men and women. (Acts 5:14 HCSB)
Now in these days when the disciples were increasing in number, a complaint by the Hellenists arose against the Hebrews because their widows were being neglected in the daily distribution. (Acts 6:1 ESV)
And the word of God continued to increase, and the number of the disciples multiplied greatly in Jerusalem, and a great many of the priests became obedient to the faith. (Acts 6:7 ESV)
So the church throughout all Judea and Galilee and Samaria had peace and was being built up. And walking in the fear of the Lord and in the comfort of the Holy Spirit, it multiplied. (Acts 9:31 ESV)
And the hand of the Lord was with them, and a great number who believed turned to the Lord. (Acts 11:21 ESV)
For he was a good man, and full of the Holy Ghost and of faith: and much people was added unto the Lord. (Acts 11:24 KJV)
But the word of God grew and multiplied. (Acts 12:24 KJV)

And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed. And the word of the Lord was published throughout all the region. (Acts 13:48-49 KJV)

So the churches were strengthened in the faith, and they increased in numbers daily. (Acts 16:5 ESV)
Also many of those who were now believers came, confessing and divulging their practices. And a number of those who had practiced magic arts brought their books together and burned them in the sight of all. And they counted the value of them and found it came to fifty thousand pieces of silver. So the word of the Lord continued to increase and prevail mightily. (Acts 19:18-20 ESV)

Growth due to persecution
Those who had been scattered as a result of the persecution that started because of Stephen made their way as far as Phoenicia, Cyprus, and Antioch, speaking the message to no one except Jews. But there were some of them, Cypriot and Cyrenian men, who came to Antioch and began speaking to the Hellenists, proclaiming the good news about the Lord Jesus. The Lord’s hand was with them, and a large number who believed turned to the Lord. Then the report about them was heard by the church that was at Jerusalem, and they sent out Barnabas to travel as far as Antioch. When he arrived and saw the grace of God, he was glad and encouraged all of them to remain true to the Lord with a firm resolve of the heart, for he was a good man, full of the Holy Spirit and of faith. And large numbers of people were added to the Lord. Then he went to Tarsus to search for Saul, and when he found him he brought him to Antioch. For a whole year they met with the church and taught large numbers. The disciples were first called Christians at Antioch. (Acts 11:19-26 HCSB)