NAICS 541620
Environmental Consulting Services
RampedUp holds 1,762,854 professional profiles classified to 2022 NAICS 541620 as of the build — 0.7% of all profiles carrying a NAICS classification. Of those, 941,480 carry a professional email address and 236,077 carry a mobile number. Ranked #38 of 370 codes.
What NAICS 541620 covers
This industry comprises establishments primarily engaged in providing advice and assistance to businesses and other organizations on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials. These establishments identify problems (e.g., inspect buildings for hazardous materials), measure and evaluate risks, and recommend solutions. They employ a multidisciplined staff of scientists, engineers, and other technicians with expertise in areas, such as air and water quality, asbestos contamination, remediation, ecological restoration, and environmental law. Establishments providing sanitation or site remediation consulting services are included in this industry. Cross-References.
Official 2022 NAICS definition. Sector 54 — Professional, Scientific, and Technical Services. Mapped in the RampedUp taxonomy to Environmental Services.
What the records carry
Field coverage for NAICS 541620, August 2026 build.
| Field on the record | Records | Share of 541620 | Share across all NAICS |
|---|---|---|---|
| Professional email | 941,480 | 53.4% | 50.8% |
| Personal email | 277,037 | 15.7% | 16.0% |
| Phone (any) | 1,609,240 | 91.3% | 89.3% |
| Mobile number | 236,077 | 13.4% | 13.4% |
| Primary contact record | 1,226,977 | 69.6% | 63.9% |
| All five present on one record | 74,421 | 4.2% | 4.5% |
Counts come from the RampedUp August 2026 build. RampedUp's crosswalk maps each 6-digit 2022 NAICS code to exactly one industry in its own taxonomy, so this is that industry's population viewed under the NAICS classification — not a separate tally.
Comparable NAICS codes
The codes ranked either side of 541620 by profile count.
| # | Code | Title | Profiles | Professional email |
|---|---|---|---|---|
| 36 | 424990 | Other Miscellaneous Nondurable Goods Merchant Wholesalers | 1,856,333 | 901,450 |
| 37 | 621111 | Offices of Physicians (except Mental Health Specialists) | 1,847,901 | 667,469 |
| 39 | 541211 | Offices of Certified Public Accountants | 1,757,470 | 861,098 |
| 40 | 336414 | Guided Missile and Space Vehicle Manufacturing | 1,754,460 | 1,162,920 |
Questions about NAICS 541620
What is NAICS code 541620?
541620 — Environmental Consulting Services. This industry comprises establishments primarily engaged in providing advice and assistance to businesses and other organizations on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials. These establishments identify problems (e.g., inspect buildings for hazardous materials), measure and evaluate risks, and recommend solutions. They employ a multidisciplined staff of scientists, engineers, and other technicians with expertise in areas, such as air and water quality, asbestos contamination, remediation, ecological restoration, and environmental law. Establishments providing sanitation or site remediation consulting services are included in this industry. Cross-References.
How many contacts does RampedUp have for NAICS 541620?
1,762,854 professional profiles as of the August 2026 build, which is 0.7% of all profiles carrying a NAICS classification. Counts come from the RampedUp August 2026 build. RampedUp's crosswalk maps each 6-digit 2022 NAICS code to exactly one industry in its own taxonomy, so this is that industry's population viewed under the NAICS classification — not a separate tally.
What contact details are available for NAICS 541620?
941,480 records carry a professional email address (53.4%), 277,037 a personal email address, 1,609,240 a phone number and 236,077 a mobile number.
Need this cross-filtered?
Exact counts for NAICS 541620 on its own. For this code combined with a title level, company size or a required field, ask and we will run it against the live file.