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People group profile · PG022485

The Batak Simalungun of Indonesia

The Batak Simalungun of Indonesia, numbering about 1,625,000 people, are No Longer Unreached. They are an ethnolinguistic community of Indonesia (Sumatra), north Sumatra, northeast of Lake Toba.

They are an indigenous people in the Batak-Nias of Sumatra people cluster of the Malay Peoples. Their primary religion is Protestantism, and they primarily speak Batak Simalungun.

Pray for the Batak SimalungunPrint profile

AI-generated illustration representing the Batak Simalungun people
AI-generated illustration, not a photograph. Photo by Google. (2026). Image generated by Gemini 2.5 Flash: Batak Simalungun

Fast facts

Country
Indonesia
Population
1,625,000
Affinity group
Asian Pacific Rim Peoples
People cluster
Batak-Nias of Sumatra
Primary language
Batak Simalungun (bts)
Primary religion
Protestantism
Strategic Progress Index
No Longer Unreached
Evangelical
2% or Greater but Less than 5%
GSEC
2% or Greater but Less than 5% Evangelical
Lostness priority
Marginally Reached People Group
Region
South-Eastern Asia, Asia
Location
North Sumatra province: Deli Serdang, Kota Pematang Siantar, Serdang Bedagai, and Simalungun regencies

Where they live

Gospel status

The Batak Simalungun are No Longer Unreached, which means 2% or more are evangelical Christians. In GSEC terms, this people group is greater than or equal to 2% evangelical.

  • Congregations exist Yes
  • Church planting in the last two years No Churches Planted

Next steps for the Batak Simalungun

  • Pray for the churches among this group to grow in faithfulness and maturity
  • Equip believers to reach the unreached peoples around them
  • Send out laborers from this people to the nations

Primary religion

Protestantism · Christianity

Primary language

Batak Simalungun · Austronesian family

100% speak Batak Simalungun

Gospel resources in Batak Simalungun

  • Bible available, published 2007
  • JESUS Film available
  • Radio programs not available
  • Gospel recordings available
  • Audio resources available
  • Bible stories not available

Films

Bibles

Find more at the JESUS Film Project, Bible.com and Faith Comes by Hearing.

Pray for the Batak Simalungun

  1. Romans 12:4–5. Pray that believers from many cultures will work together as one body so that the church is built up.
  2. Revelation 7:9. Pray for the day when people from this group stand before the throne with every nation, tribe, people and language.
  3. John 17:3. Pray that many will come to know the only true God, and Jesus Christ whom he has sent.
  4. Psalm 27:1. Pray that new believers will be strengthened in the face of persecution, with the Lord as their stronghold.

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