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Get LEP Data and Statistics in Seconds

You can get data and statistics about Limited English Proficiency (LEP) populations with the free LEP Baseline Report. This information can be used in your LEP plans, NEPA documents and planning reports. The LEP Baseline Report is a free section in Cubitâ??s Socio-Ec Report.

What LEP data can I get?

Check out the sample LEP Baseline report below. It has data and statistics about adult Limited English Proficiency populations in the United States and includes LEP best practices. The LEP Baseline report has data for states, counties, cities/places, Census tracts and Census block groups.

Limited English Proficiency (LEP) Baseline Report

You can get the LEP data featured in this report for free at any time, for any project.
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LEP populations defined here

Executive Order 13166 "Improving Access to Services for Persons with Limited English Proficiency" requires all recipients of federal funds to provide meaningful access to persons who are limited in their English proficiency (LEP). The United States (U.S.) Department of Justice defines LEP individuals as those "who do not speak English as their primary language and who have a limited ability to read, write, speak, or understand English" (67 FR 41459). Data about LEP populations was gathered in the U.S. Census 2000. For data analysis purposes, the Census divides the states of the United States into counties, divides counties into tracts and divides tracts into block groups.

Percent of households that were linguistically isolated

Within area block groups, Census data record the presence of persons who describe their ability to speak English as less than "Very Well." The table below shows the percentages of adults who speak English less than "Very Well" by language category. Additionally, 1,374 households or 33.8% of households within area block groups reported to the Census that their household was linguistically isolated, meaning that all household members over the age of fourteen had at least some difficulty with English. Thus, Census data indicate the presence of LEP populations.

Table. Census Data: Percent of Adult Speakers Who Speak English Less than Very Well*

Chart of the Percent of Adult Speakers who speak English Less than Very Well broken out by language category
Census Geographies Total Adult Population Percent of Adult Speakers Who Speak English Less than Very Well
Spanish Language Speakers Other Indo European Language Speakers Asian and Pacific Island Language Speakers Other Language Speakers
Block Groups
6-37-221500-1 1,227 27.5% 1.4% 14.6% 0.0%
6-37-221500-2 915 43.9% 0.0% 2.1% 1.0%
6-37-221500-3 1,473 43.2% 0.0% 3.7% 0.5%
6-37-221600-1 1,336 53.2% 0.7% 3.4% 0.0%
6-37-221600-2 1,145 56.5% 0.0% 0.0% 0.0%
6-37-221600-3 846 54.6% 0.0% 0.7% 0.0%
6-37-221710-2 381 70.6% 0.0% 6.0% 0.0%
6-37-221710-3 1,537 59.8% 0.0% 1.9% 0.0%
6-37-221710-4 708 56.6% 0.0% 1.8% 0.0%
6-37-221500 3,615 38.1% 0.5% 7.0% 0.5%
6-37-221600 3,327 54.7% 0.3% 1.5% 0.0%
6-37-221710 3,284 62.5% 0.0% 2.0% 0.0%
Los Angeles city 2,716,259 25.1% 3.2% 5.1% 0.6%
Los Angeles County
6,859,536 21.5% 2.5% 6.3% 0.4%
California 24,650,185 13.9% 1.7% 5.1% 0.3%

Data Source: United States Census 2000 (Table P19) as of February 9, 2008 for persons age 18 and older.

* The data on ability to speak English represent the Census respondent's own perception about his ability to speak English (United States Census 2000 Metadata).

Percentage of adults who lack basic prose literacy skills

Since LEP is partially defined as a limited ability to read and write English, literacy data were also consulted. Indirect literacy estimates for adults were calculated by the National Center for Education Statistics based on 2003 survey data for states and counties. The percentage of adults who lack basic prose literacy skills for Los Angeles County and California are 18% and 19% respectively.1 While literacy estimates do not differentiate between low literate English speakers and low literate LEP populations, literacy data should be considered along with other LEP indicators in determining how to best provide access to LEP populations.

School District data showing the percent of English Language Learners and Migrant Students

To supplement Census and literacy data, area school district (ISD) data were consulted for indicators of LEP populations. School districts collect data on the number of English Language Learners as defined by each state's Department of Education and migrant students as defined in 34 CFR 200.81(d). For school year 2005-06, LOS ANGELES UNIFIED reported 40.4% of students as English Language Learners and 0.6% as migrant students. In conclusion, the data indicate the likelihood of LEP populations in the area.

To determine the languages of the LEP populations, Census data were consulted for project area tracts. The table below details the top five languages spoken by the total adult population (LEP and non-LEP) for each tract.

Table. Census Data: Top Five Languages Spoken by the Adult Population

Languages Most Often Spoken
Census Geographies Language 1 Language 2 Language 3 Language 4 Language 5
6-37-221500 Spanish/Spanish Creole
African languages
6-37-221600 Spanish/Spanish Creole
6-37-221710 Spanish/Spanish Creole

Data Source: United States Census 2000 (Table PCT10) as of February 9, 2008.

LEP Best Practice! Checks to see if any LEP language groups exceed the Department of Justice's Safe Harbor threshold of 5% or 1,000 persons

Therefore, the block groups data indicate the presence of a Spanish language group that exceeds the Department of Justice's Safe Harbor threshold of 5% or 1,000 persons. In accordance with the Safe Harbor provisions, written translations of vital documents will be provided for the LEP language group in addition to other measures assuring meaningful access. These other measures include [enter any measures to be taken to ensure meaningful access]. Thus, the requirements of Executive Order 13166 appear to be satisfied.

And of course, cut-and-paste ready citations!


1. See for general cautions about indirect literacy estimates.


  • "Improving Access to Services for Persons with Limited English Proficiency," 3 Code of Federal Regulations 13166. 2001 ed.
  • "Guidance to Federal Financial Assistance Recipients Regarding Title VI Prohibition Against National Origin Discrimination Affecting Limited English Proficient Persons," 67 Federal Register 117 (18 June 2002), pp. 41459.
  • U.S. Bureau of the Census. Census 2000: Summary File 3. Washington: The Bureau, 2008.
  • National Center for Education Statistics. "State & County Estimates of Low Literacy." National Assessment of Adult Literacy. 2009.
  • National Center for Education Statistics. Common Core of Data. Washington: NCES.

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The LEP Baseline Report will ALWAYS be FREE!

The LEP Baseline report was the first tool that Cubit ever built. We couldn't have developed this report without the input of our users and government officials. So we promised that the LEP Baseline report would always be free. Read the rest of Cubit's story here.