100 Most Popular Non-governmental Organizations in United States 2026 — by Audience Size

How to read this list

Rank

Position in the Top 100, sorted by audience size from largest to smallest. Updated weekly.

Audience size

Estimated number of unique people in United States who actively engage with this audience, derived from anonymized search-behavior signals.

Country share

Share of the global audience that is active in United States. A higher value means the audience is more locally concentrated here.

Avg age

Average age in years across the people who engage with this audience in United States, derived from anonymized search-behavior signals. A dash means demographic data is not yet available.

Female share

Share of women among the people who engage with this audience in United States. 50% is gender-balanced; values above mean female-skewed, below mean male-skewed.

Ranking

Rank	Audience	Audience size	Country share	Avg age	Female share	Subtype
26	MMarch of Dimes	333k	97.7%	35.9	85.9%	Non-governmental organization
27	SStudent Doctor Network	326k	32.5%	36.1	59.1%	Non-governmental organization
28	VVoice of the Martyrs	316k	53.3%	50.0	68.7%	Non-governmental organization
29	MMSPCA-Angell	305k	92.5%	46.7	68.3%	Non-governmental organization
30	NNational Autism Association	302k	70.8%	36.8	79.5%	Non-governmental organization
31	PPrison Fellowship	293k	99.7%	49.1	75.7%	Non-governmental organization
32	AArbor Day Foundation	287k	98.6%	45.1	68.3%	Non-governmental organization
33	AAIDS Healthcare Foundation	286k	62.4%	43.0	51.6%	Non-governmental organization
34	AALS Association	285k	94.1%	39.2	62.6%	Non-governmental organization
35	OOperation Homefront	246k	99.6%	48.2	52.9%	Non-governmental organization
36	NNational Organization for Rare Disorders	210k	94.5%	42.7	68.9%	Non-governmental organization
37	SStudent Nonviolent Coordinating Committee	199k	98.5%	—	—	Non-governmental organization
38	PPublic Service Loan Forgiveness (PSLF)	192k	91.5%	27.2	60.4%	Non-governmental organization
39	GGreenpeace	190k	1.8%	38.6	59.6%	Non-governmental organization
40	GGlobal Reporting Initiative	188k	70.3%	—	—	Non-governmental organization
41	AAmerican Board of Family Medicine	188k	90.0%	44.5	62.8%	Non-governmental organization
42	SStop Soldier Suicide	186k	99.3%	42.9	57.8%	Non-governmental organization
43	IInternational Justice Mission	184k	72.7%	41.6	69.9%	Non-governmental organization
44	Ppancreatic cancer action network	184k	99.9%	47.2	75.5%	Non-governmental organization
45	Vvietnam veterans america	182k	89.0%	55.7	33.7%	Non-governmental organization
46	JJ Street	181k	87.1%	46.0	56.5%	Non-governmental organization
47	PPoints of Light	179k	94.3%	44.1	76.5%	Non-governmental organization
48	FFellowship of Christian Athletes	176k	98.8%	41.3	59.1%	Non-governmental organization
49	CChosen People Ministries	176k	96.6%	50.6	59.1%	Non-governmental organization
50	FFreedom House	167k	83.0%	39.3	62.7%	Non-governmental organization

Want the full picture for any of these audiences?

Open any profile to see psychographics, top regions, peer affinities and demographic splits — all derived from the same anonymized signals.

Explore the full directory →

Frequently asked questions

How is this list of the most popular non-governmental organizations compiled?

Rascasse aggregates anonymized search-behavior signals across United States and ranks each non-governmental organization by its estimated audience size. Only entries with at least 5 measured entities are listed.

How often is the list updated?

The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.

What is the largest non-governmental organization in United States?

UNICEF currently leads with an estimated audience of 3.3M people in United States.

Other top lists in United States

Political Parties Politicians Labor Unions Charities Priests Entrepreneurs Currencies Persons Churches Economists