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PEOPLE GROUP PROFILE

The Batak Karo of Indonesia

The Batak Karo of Indonesia, numbering approximately 920,000 people, are No Longer Unreached. They are an ethnolinguistic community of Indonesia (Sumatra), central and north, west and northwest of Lake Toba. They are an Indigenous people in the Batak-Nias of Sumatra people cluster of the Malay Peoples affinity bloc. Their primary language is Batak Karo and their primary religion is Protestantism.

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

Fast Facts:

Affinity Group: Malay Peoples
Country: Indonesia
People Cluster: Batak-Nias of Sumatra
Primary Language(s): Batak Karo (btx)
Primary Religion(s): Protestantism
Population: 920,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical
People Group ID: PG022484
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Pray for the Batak Karo 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.

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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

—
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Batak Karo
Language Family: Austronesian

76%
%
Batak Karo Speakers

Media Resources in Batak Karo:

Films:

Provided by the Jesus Film Project

View all resources

Bible Resources in Batak Karo:

Provided by Faith Comes by Hearing

Or check out the Batak Karo bible at Bible.com

Linked from YouVersion

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Explore Lostness and Next Steps

Unengaged and Unreached

Strategic Priority Index (SPI): Unengaged and Unreached (SPI: 2), which means there are less than 2% evangelical Christian populations among which there are no known efforts focused on establishing self-sustaining churches consistent with evangelical faith and practice.
Lostness Priority Index (LPI): Marginally Reached People Group, (LPI: 4), 3% or Greater but Less than 6% Evangelical.
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical (GSEC: 4), this people group is greater than or equal to 2% evangelical

Next steps for the Batak Karo:
Begin signifcant prayer and fasting for this group
Send cross-cultural teams to discover and research this people group
Begin gospel seed sowing and church planting among this group

SPI: Unreached yet Engaged

The Batak Karo are Engaged yet Unreached, which means there are less than 2% evangelical Christian populations but there are sustained efforts at establishing self-sustaining churches consistent with evangelical faith and practice.

Next steps for the Batak Karo:
Continue prayer and fasting for this group
Continue gospel seed sowing and church planting among this group
Begin training up local leaders to lead and develop strategies to reach their own people

SPI: No longer Unreached

The Batak Karo 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 Karo:
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 Karo of Indonesia

Come to me, all who labor and are heavy laden, and I will give you rest.
readMatthew 11:28

Pray for those who are tired, weary, and burdened by the weight of sin to encounter Jesus and experience the rest that only He can give.

Let the peoples praise you, O God; let all the peoples praise you!
readPsalm 67:3

Pray that God will be working in people's hearts, give them opportunities to receive the gospel, and bring many to faith in Himself.

Oh, fear the LORD, you his saints, for those who fear him have no lack!
readPsalm 34:9

Pray that as people place their faith in Christ, they will be grounded in the Word, always trusting in the Lord's provision for their needs.

Let them praise his name with dancing, making melody to him with tambourine and lyre!
readPsalm 149:3

Pray that God will send His people across cultures to share the gospel so that those who don't yet know the truth about Him might praise His name and share the hope of Christ with others.

Batak Karo Across Countries (ROP3 - 114801) reported in the following countries:

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 Definitions page.

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