More than 67 million people in the United States speak a language other than English at home, according to the US Census Bureau. Understanding the languages spoken in the United States is not just demographic background. For government agencies, public utilities, and federally funded organizations, it has direct consequences for compliance, service delivery, and community trust.
Federal law ties language access directly to funding. Any agency receiving federal assistance is subject to Title VI of the Civil Rights Act of 1964, which prohibits discrimination based on national origin, including language. Executive Order 13166 extended that obligation further, requiring agencies to develop and implement language access plans for people with limited English proficiency (LEP). LEP refers to individuals who do not speak English as their primary language and who have a limited ability to read, speak, write, or understand English.
For procurement officers, program directors, and agency leaders, the question is no longer whether to provide language services. It is whether the services they have in place meet the standard required.
Languages Spoken in the United States: The Scale of the Obligation
English is the primary language spoken by the majority of the US population, with over 239 million speakers. No federal law names it the official language, and 31 states have established it as the official language for government communications. But the population that government agencies serve is significantly broader than English speakers alone.
The number of people in the US who speak a language other than English at home grew from 23.1 million in 1980 to more than 67.8 million in 2019, a near-tripling in under four decades. That growth is not concentrated in a single community. Spanish, Chinese, Tagalog, Vietnamese, and Arabic are each spoken by more than one million people in the US, and each brings distinct proficiency patterns, cultural context, and communication needs.
For public agencies, this is not an abstract trend. It defines who is in your service area, who is reading your forms and notices, and who may be unable to access your programs without language support.
LEP Compliance: What the Law Requires
LEP compliance under Title VI and Executive Order 13166 requires agencies to take reasonable steps to provide meaningful access to people with limited English proficiency. The Department of Justice’s four-factor framework guides this assessment:
The number or proportion of LEP persons in the service area. An agency serving a county where 20 percent of residents speak Spanish at home faces a materially different obligation than one where fewer than one percent do.
The frequency of contact LEP persons have with agency programs. A benefits agency with daily contact with LEP clients has higher obligations than an agency with infrequent contact.
The nature and importance of the program or activity. Services affecting health, safety, or legal rights require more rigorous language access than lower-stakes programs.
The agency’s resources. Compliance does not require unlimited spending, but it does require a good-faith effort proportionate to the agency’s budget and capacity.
Agencies that have not reviewed their language access plan recently face real compliance risk. The Office for Civil Rights at the Department of Justice and the Department of Health and Human Services both conduct compliance reviews, and language access gaps are among the most commonly cited findings.
The Most Common Languages Spoken in the United States: What Agencies Should Plan For
Knowing which languages are spoken in your service area is the first step in building a defensible language access plan. Nationally, the most common languages other than English are:
Spanish (over 41 million speakers): The most widely spoken non-English language in the US. Spanish-speaking communities are present in every state and are the most frequent language access need for federal, state, and local agencies.
Chinese, including Mandarin and Cantonese (over 3.5 million speakers): Concentrated in metro areas with established Chinese immigrant communities. English proficiency rates are lower than average among this group, making professional interpretation and translation especially important.
Tagalog (nearly 1.7 million speakers): A growing community with generally higher English proficiency, though document translation remains important for formal government communications.
Vietnamese (over 1.5 million speakers): A community that has grown substantially since the 1970s. More than half of Vietnamese speakers in the US report speaking English less than “very well,” according to Census data.
Arabic (over 1.2 million speakers): Concentrated in states including Michigan and New York, with significant variation in dialect and literacy.
A language access plan should identify the top languages spoken by LEP populations in your specific service area, using Census data and community needs assessments. Nationally representative data is a starting point. Local data drives a defensible plan.
Public Sector Translation Requirements: Getting the Procurement Right
Knowing your language access obligations is one part of the challenge. Procuring a language service provider (LSP) that can meet them is another.
Government procurement officers evaluating language services vendors typically need to assess three things: quality management credentials, modality coverage, and supplier diversity qualifications.
Quality management credentials are the clearest indicator of whether an LSP operates to a documented standard. ISO 9001 (Quality Management) and ISO 17100 (Translation Services) are the relevant certifications for translation work. ISO 17100 specifically governs the translation process: translator qualifications, review workflows, and project management. An LSP without these certifications is asking your agency to take quality on faith, which is difficult to defend in an audit.
Modality coverage matters because language access needs are not limited to document translation. Government agencies regularly need on-site interpreting for hearings and community meetings, over-the-phone interpreting (OPI) for service calls and case management, and video remote interpreting (VRI) for settings where on-site is not practical. An LSP that covers all three modalities under one contract simplifies administration and maintains consistent quality.
Supplier diversity qualifications are increasingly relevant for public sector procurement. Many agencies have MBE set-aside requirements or preference scoring in their RFP evaluation criteria. An NMSDC-certified Minority Business Enterprise (MBE) that also holds ISO certifications is a procurement combination that few language service providers can offer.
Dynamic Language has provided translation, interpreting, and localization services since 1985. We are an NMSDC-certified Minority Business Enterprise (MBE) and hold five ISO certifications: ISO 9001 (Quality Management), ISO 17100 (Translation Services), ISO 27001 (Information Security), and ISO 18587 (Machine Translation Post-Editing).
How to Build a Language Access Plan That Holds Up
A language access plan is a written document that describes how your agency identifies LEP individuals, communicates with them, and trains staff to do so consistently. The Department of Justice publishes guidance on what a language access plan should include. At minimum, it should cover:
- Which languages are spoken in your service area, based on current Census and community data.
- How LEP individuals are identified when they contact or visit the agency.
- What language services are available, including translation, interpretation, and signage.
- How staff are trained to access those services.
- How the plan is monitored and updated over time.
Agencies that have not reviewed their language access plan since 2020 or earlier should treat that as a risk item. Federal guidance, enforcement priorities, and community demographics all shift over time, and a plan that does not reflect current realities is limited protection in a compliance review.
Dynamic Language offers language access plan support as part of its government services.
Frequently Asked Questions: Languages Spoken in the United States and Government Language Access
What are the most common languages spoken in the United States other than English?
Spanish is by far the most common, with over 41 million speakers. Chinese (including Mandarin and Cantonese) is second, with over 3.5 million. Tagalog, Vietnamese, and Arabic each exceed one million speakers. These five languages represent the largest non-English-speaking communities nationwide, though the distribution varies significantly by region and locality. Government agencies should use local Census data to identify the specific languages most relevant to their service area.
What does LEP mean in the context of government language access?
LEP stands for limited English proficiency. It refers to individuals who do not speak English as their primary language and who have a limited ability to read, speak, write, or understand English well enough to communicate effectively in a government setting. Federal law, including Title VI of the Civil Rights Act and Executive Order 13166, requires agencies receiving federal funding to take reasonable steps to provide meaningful access to LEP individuals.
What is Title VI language access compliance?
Title VI of the Civil Rights Act of 1964 prohibits discrimination based on national origin by agencies receiving federal financial assistance. The Department of Justice interprets this to include discrimination based on language. In practice, Title VI language access compliance means having a plan to provide meaningful access to LEP individuals, using a four-factor framework that weighs the size and frequency of contact with the LEP population, the importance of the services provided, and the agency’s resources.
What should a government agency look for in a language access plan?
A defensible language access plan identifies the LEP populations in your service area, describes how the agency identifies LEP individuals at the point of contact, specifies which language services are available and how staff access them, covers training, and sets a schedule for review and update. Plans that are out of date, incomplete, or not implemented consistently are the most common findings in Office for Civil Rights compliance reviews.
What is Executive Order 13166?
Executive Order 13166, signed in 2000, directs federal agencies to improve access to their services for people with limited English proficiency. It requires each federal agency to develop and implement a system to provide LEP persons meaningful access to agency programs and services. It also directed the Department of Justice to coordinate federal efforts, produce guidance, and assist agencies in compliance. Many state and local agencies receiving federal funding are indirectly bound by its requirements through the funding conditions attached to federal grants.
What certifications should a government language services vendor hold?
At minimum, look for ISO 9001 (Quality Management) and ISO 17100 (Translation Services). ISO 9001 shows the organization operates a documented quality management system. ISO 17100 is specific to translation: it governs translator qualifications, the review process, and project management. For agencies with information security obligations, ISO 27001 (Information Security Management) is also relevant. Supplier diversity credentials, such as NMSDC-certified Minority Business Enterprise (MBE) status, may be required or preferred depending on your procurement rules.
How do agencies determine which languages to include in their language access plan?
The starting point is the Census Bureau’s American Community Survey, which provides language-spoken-at-home data at the county and metro level. Agencies should also consult community organizations, review service request data, and assess interpreter usage logs. The Department of Justice guidance recommends the four-factor framework as the basis for prioritizing which languages to cover and at what level of service.
What is the difference between translation and interpreting in a government context?
Translation is the conversion of written content from one language to another: forms, notices, regulations, web pages. Interpreting is the conversion of spoken or signed communication in real time: hearings, case meetings, community events, phone calls. Both require professional qualifications. Government agencies often need both, across multiple languages and modalities (on-site, telephone, video remote). A contract that covers all three modalities from a single ISO-certified vendor simplifies compliance documentation and quality oversight.
Dynamic Language has served government agencies since 1985.
If your agency is reviewing its language access plan or evaluating language services vendors, our team can help.
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