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Taxonomy of Human Services

The Taxonomy of Human Services is the Information and Referral (I&R) industry's classification system for indexing resources in I&R databases. It was developed by INFO LINE of Los Angeles, the predecessor to 211 LA County out of a need to classify and define health and human services. It has been endorsed by the national association Alliance for Information and Referral Systems (AIRS) and United Way of America as the standard indexing system for the industry.


General information
Vocabulary alternative name or acronym: 

AIRS/211 LA County Taxonomy

Vocabulary type: 
Current version date: 
Tue, 2010-04-13
Available formats: 
Was vocabulary created as a course project: 
Scope and Usage

To index and access community resources based on the services they provide and the target populations they serve, if any. It provides a structure for your information and it tells people what is in your information system and how to find it. The Taxonomy sets a new standard for defining services and for indexing the wide variety of human services available in communities across North America. 

Used By: 

LA County, United Way 

Vocabulary characteristics
Type of display : 
Relationship types: 
Depth of Hierarchy: 
5 levels
Terms and Conditions
Licensing Options: 

 by subscription
criteria for displaying on website:

Purchase/Subscription Price: 
from $150/year to $2000 depending on type of organization
Vocabulary provider name: 
Information and Referral Federation of Los Angeles County, doing business as 211 LA County
Provider contact details: