Download the People Group List (16 languages .csv)

Amharic - አማርኛ | Arabic - عربي
Bengali - বাংলা | Chinese (Simplified) - 中文（简体）
Chinese (Traditional) - 中文（繁體) | French - Français
German - Deutsch | Gujarati - ગુજરાતી
Hindi - हिन्दी | Indonesian - Bahasa Indonesia
Korean - 한국어 | Nepali - नेपाली
Portugese - Português | Russian - Русский
Spanish - Espanol | Tagalong / Filipino
Be sure to use the data import function in your favorite app for working with data.
If you'd like to help improve these translations, Contact Us.

PEOPLE GROUP PROFILE

The Grass Koiari of Papua New Guinea

The Grass Koiari of Papua New Guinea, numbering approximately 3,800 people, are No Longer Unreached. They are an indigenous ethnic group of Papua New Guinea. They mostly adhere to Protestantism and Grass Koiari is their primary language.

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

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): Grass Koiari (kbk)
Primary Religion(s): Protestantism
Population: 3,800
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG020266
View on Joshua Project

Print Profile
Submit Updates

Pray for the Grass Koiari of Papua New Guinea

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!
Download Prayer Guide

Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

42%
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Grass Koiari
Language Family: Koiarian

65%
%
Koiari Speakers

Media Resources in Grass Koiari:

Films:

No film resources are listed for this language.

Provided by the Jesus Film Project

View all resources

Bible Resources in Grass Koiari:

No Bible resources are listed for this language.

Provided by Faith Comes by Hearing

Or check out the Grass Koiari bible at Bible.com

Linked from YouVersion

View all resources

SPI: No longer Unreached

The Grass Koiari 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 Grass Koiari:
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 Grass Koiari of Papua New Guinea

My flesh and my heart may fail, but God is the strength of my heart and my portion forever.
readPsalm 73:26

Pray that those who are lost and struggling to find hope will find their strength and hope in God, recognizing Him as their portion and deliverer forever.

And the word of God continued to increase, and the number of the disciples multiplied greatly in Jerusalem, and a great many of the priests became obedient to the faith.
readActs 6:7

Pray that the Word of God will be increasingly available to these people in ways they will resonate with so that all may have a chance to respond to the good news of Jesus Christ.

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.

Is it not to share your bread with the hungry and bring the homeless poor into your house; when you see the naked, to cover him, and not to hide yourself from your own flesh?
readIsaiah 58:7

As believers cross cultures to share the good news of Christ, pray that God will sustain them and grow their faith as He gives them the compassion necessary to minister well to those in need.

Grass Koiari Across Countries (ROP3 - 103473) reported in the following countries:

Strategic Progress Index
All

1 people group

PhotoPeople Group IDNameCountryPopulation ▼Strategic Progress IndexLanguageReligion
Grass KoiariPG020266Grass KoiariPapua New Guinea3,800No Longer UnreachedGrass KoiariProtestantism

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.

Scroll to Top