---
"title": "How Many Undocumented"
"description": "There are more than 5 million unauthorized workers in the U.S. economy. This study estimates that these workers have become a very substantial presence in the sectors where they are concentrated. More than a million undocumented persons are employed in manufacturing and a similar number in the service industries. More than 600,000 work in construction and more than 700,000 in restaurants."
"date": "2002-03-21"
"authors":
  -
    "name": "B. Lindsey Lowell"
    "job_title": "Guest Contributor"
  -
    "name": "Roberto Suro"
    "job_title": "Guest Contributor"
"url": "https://alpha.pewresearch.org/pewresearch-org/race-and-ethnicity/2002/03/21/how-many-undocumented/"
"categories":
  - "Business & Workplace"
  - "Immigration & Migration"
  - "Immigration Trends"
  - "Unauthorized Immigration"
---

# How Many Undocumented

There are more than 5 million unauthorized workers in the U.S. economy. This study estimates that these workers have become a very substantial presence in the sectors where they are concentrated. More than a million undocumented persons are employed in manufacturing and a similar number in the service industries. More than 600,000 work in construction and more than 700,000 in restaurants.