The Batak Simalungun of Indonesia

The Batak Simalungun of Indonesia, numbering approximately 1,625,000 people, are No Longer Unreached. They are described as an ethnolinguistic community of Indonesia (Sumatra), north Sumatra, northeast of Lake Toba They are an Indigenous people, with Batak as their ethnic/kinship group and are in the Batak-Nias of Sumatra people cluster of the Malay Peoples. Their primary religion is Protestantism. They primarily speak Batak Simalungun.

Photo by Google. (2026). Image generated by Gemini 2.5 Flash: Batak Simalungun

Fast Facts*:

Affinity Group: Malay Peoples
Country: Indonesia
People Cluster: Batak-Nias of Sumatra
Primary Language(s): Batak Simalungun (bts)
Primary Religion(s): Protestantism
Population: 1,625,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical
People Group ID: PG022485
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Pray for the Batak Simalungun of Indonesia

Join others around the world in praying for the lost to be saved, the gospel to advance, the global Church to grow, and for laborers to be sent out and sustained in the harvest.

Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Batak Simalungun
Language Family: Austronesian

100%
%
Batak Simalungun Speakers

Media Resources in Batak Simalungun:

Films:
TitleLink
JESUSView Film

1 film

Bible Resources in Batak Simalungun:

Bible Name (Translation)VideoAudioText
Formal Batak Simalungun Version, 2007

1 entry

Or check out the Batak Simalungun bible at Bible.com

Linked from YouVersion

SPI: No longer Unreached

The Batak Simalungun are No Longer Unreached, which means there are more than 2% evangelical Christian populations and there are churches consistent with evangelical faith and practice. There is still more to be done among them.

Next steps for the Batak Simalungun:
Empower local believers to begin praying for their own people
Continue gospel seed sowing and church planting
Encourage local leaders to being leading church planting strategy and looking for Unreached and Unengaged groups nearby

Pray specifically for the Batak Simalungun of Indonesia

The grass withers, the flower fades, but the word of our God will stand forever.
readIsaiah 40:8

Pray that those who don't know Jesus will be freed from the emptiness of fading hopes and find lasting life and truth in the unchanging Word of God.

Worship the LORD in the splendor of holiness; tremble before him, all the earth!
readPsalm 96:9

Pray that many who do not yet know Jesus will come to know Him and worship Him in the splendor of His holiness.

I lift up my eyes to the hills. From where does my help come? My help comes from the LORD, who made heaven and earth.
readPsalm 121:1-2

Pray that as people place their faith in Christ and experience hardship, God will remind them that their help comes from the One who made heaven and earth and that He is powerful to meet their needs.

Say among the nations, “The LORD reigns! Yes, the world is established; it shall never be moved; he will judge the peoples with equity.”
readPsalm 96:10

Pray for God to put in the hearts of believers to go to the lost and testify about the Lord who reigns.

Batak Simalungun Across Countries (ROP3 - 101127) reported in the following countries:

Strategic Progress Index
All

1 people group

To download a comprehensive people group list in spreadsheet form, visit our Research Data page.

*Peoplegroups.org relies on updates from the field and other organizations for much of our data, so if you have any updates, please contact us. We use various international naming standards. For a list of these standards and fields, visit our Data Standards section.

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