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PEOPLE GROUP PROFILE

The Tonsea of Indonesia

The Tonsea of Indonesia, numbering approximately 147,000 people, are No Longer Unreached. They are an ethnolinguistic community of Indonesia. They are an Indigenous people in the Minahasa-Sangir of Sulawesi people cluster of the Malay Peoples affinity bloc. Their primary language is Tonsea and their primary religion is Protestantism.

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

Fast Facts:

Affinity Group: Malay Peoples
Country: Indonesia
People Cluster: Minahasa-Sangir of Sulawesi
Primary Language(s): Tonsea (txs)
Primary Religion(s): Protestantism
Population: 147,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 10% or Greater Evangelical
People Group ID: PG022885
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Pray for the Tonsea 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.

Pray Now!
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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

—
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Tonsea
Language Family: Austronesian

76%
%
Tonsea Speakers

Media Resources in Tonsea:

Films:

Provided by the Jesus Film Project

View all resources

Bible Resources in Tonsea:

Provided by Faith Comes by Hearing

Or check out the Tonsea bible at Bible.com

Linked from YouVersion

View all resources

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): Moderately Reached People Group, (LPI: 5), 6% to 20% Evangelical.
Global Status of Evangelical Christianity (GSEC): 10% or Greater Evangelical (GSEC: 6), this people group is greater than or equal to 10% evangelical

Next steps for the Tonsea:
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 Tonsea 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 Tonsea:
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 Tonsea 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 Tonsea:
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 Tonsea of Indonesia

"And you will know the truth, and the truth will set you free.”
readJohn 8:32

Pray for those who live enslaved to sin to hear and receive the truth of the gospel and be set free.

Your word is a lamp to my feet and a light to my path.
readPsalm 119:105

Pray that they will receive the Word of God as a lamp to their feet and commit their ways to Him.

So Jesus said to the Jews who had believed him, “If you abide in my word, you are truly my disciples."
readJohn 8:31

Pray that as people place their faith in Christ, they will abide in Christ daily, depending on Him for every need.

And he said to them, "The harvest is plentiful, but the laborers are few. Therefore pray earnestly to the Lord of the harvest to send out laborers into his harvest."
readLuke 10:2

Ask God to send out laborers into His harvest field, raising up believers from around the world to go and proclaim the kingdom of God with those who need to hear it.

Tonsea Across Countries (ROP3 - 110161) 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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