The GRII is headquartered in the Reformed Millennium Center Indonesia, in Kemayoran, Jakarta, where it has its largest church, the Messiah Cathedral.

[3] Since 2018, the Head of Synod of the Reformed Evangelical Church of Indonesia is Antonius Steven Un, the senior pastor of GRII Kebon Jeruk.

[7] On December 28, 2019, at the National Reformed Evangelical Convention (NREC), an annually held convention in Indonesia, Pastor Tong brought up an issue that the church was currently experiencing: a crisis of male servants to serve as Sunday school teachers and a vacant of fatherly authority in children's life because Sunday school teachers are predominantly women.

He called for the young generation, especially men, to surrender themselves as servants of God to serve as Sunday school teachers in their respective churches.

There are churches in Jakarta, Bandung, Yogyakarta, Semarang, Surabaya, Malang, Denpasar, Palembang, Medan, Batam, Samarinda, Singapore, Balikpapan, Kuala Lumpur, Melbourne, Sydney, Perth, Taipei, Taichung, Guangzhou, Beijing, Shanghai, Xiamen, Hong Kong, Berlin, Hamburg, München, Toronto, Boston, Los Angeles, and Tokyo.

Jakarta Java & Bali Sumatra Sulawesi & Maluku Kalimantan East Nusa Tenggara Asia Australia & New Zealand Europe Member of the World Reformed Fellowship.