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PEOPLE GROUP PROFILE

The Rumsen Ohlone of United States

The Rumsen Ohlone of United States, numbering approximately 2,000 people, are No Longer Unreached. They are one of eight tribal groups within the Ohlone (Costanoan) people of central California. They are also known as Rumsien, San Carlos Costanoan, Carmeleno, Rumsen Ohlone. They are an Indigenous people in the North American Indigenous people cluster of the North American Peoples affinity bloc. Their primary language is English and their primary religion is Folk Catholicism.

Photo by Google. (2025). Image generated by Gemini 2.5 Flash: Rumsen

Fast Facts:

Affinity Group: North American Peoples
Country: United States
People Cluster: North American Indigenous
Primary Language(s): English (eng)
Primary Religion(s): Folk Catholicism
Population: 2,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG050638
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Pray for the Rumsen Ohlone of United States

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Dig Deeper (Religion):

Primary Religion: Folk Catholicism
Religious Affiliation: Christianity

60%
%

Dig Deeper (Language):

Primary Language: English
Language Family:

100%
%

Media Resources in English:

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Bible Resources in English:

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

Next steps for the Rumsen Ohlone:
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 Rumsen Ohlone 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 Rumsen Ohlone:
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 Rumsen Ohlone 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 Rumsen Ohlone:
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 Rumsen Ohlone of United States

And he said to them, "This is my blood of the covenant, which is poured out for many."
readMark 14:23-24

Pray for those who may have heard the gospel but have not yet submitted their lives to Christ, that they will finally see the sacrifice which He made for them and surrender their lives to Him.

Children, obey your parents in the Lord, for this is right. “Honor your father and mother” (this is the first commandment with a promise).
readEphesians 6:1-2

Pray that God will bring young men and women to faith in Jesus and that the fruit of their faith will be a powerful testimony as they honor their parents.

"...I will build my church, and the gates of hell shall not prevail against it."
readMatthew 16:18b

Pray that God will build and grow His Church among this people.

Put on the whole armor of God, that you may be able to stand against the schemes of the devil.
readEphesians 6:11

Pray that those God sends to cross cultures will put on the full armor of God so that they will be able to stand against the schemes of the enemy.

Rumsen Across Countries (ROP3 - 117137) 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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