How many employees work at Quest Diagnostics?
Quest Diagnostics, Inc. (DGX) has approximately 57,614 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Quest Diagnostics’s total headcount has grown 0.8% from 57,177 employees in 2023 to 57,614 in 2026.
Is Quest Diagnostics hiring right now?
Yes, Quest Diagnostics is actively hiring. Quest Diagnostics had 3,447 active job postings in 2026, a 19.4% increase from 2025 — see job openings & hiring trends.
About Quest Diagnostics’s Workforce
Quest Diagnostics, Inc. (DGX) is a Healthcare and Wellness Services company that employs 57,614 people worldwide as of March 2026. It is the 5th-largest by headcount among its peers. Founded in 1967, the company is headquartered in Secaucus, New Jersey and trades on the New York Stock Exchange.
Quest Diagnostics's workforce has grown 0.8% from 2023 to 2026, though it is down 0.1% year over year in 2026. Its workforce is concentrated most in North America (90.6%), followed by South Asia (3.6%) and South America (1.9%).
Quest Diagnostics's functional groups are Engineering (47.9%), Finance and Operations (36.5%), and Sales and Marketing (15.6%), with Engineering growing fastest (up 0.7%). The average salary is $65,606, ranging from a median of $58,000 in Northern Europe to $8,000 in South Asia.
Quest Diagnostics's active job postings rose 19.4% in 2026 to 3,447, with new postings per month cooling from 3,680 in 2023 to 1,529 in 2026. Overall employee sentiment is negative and declining.
Sourced from Revelio Labs workforce data.
- Ticker
- New York Stock Exchange: DGX
- Headquarters
- Secaucus, New Jersey
- Founded
- 1967
- Industry
- Healthcare and Wellness Services
- Employees
- 57,614
- YoY
- -0.1% (+733)
As of March 2026
Quest Diagnostics workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Quest Diagnostics. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsQuest Diagnostics Annual Employee Count (2023-2026)
- Quest Diagnostics had 57,614 employees in 2026, a 0.1% decline (+733) from 2025.
- Quest Diagnostics had 57,537 employees in 2025, a 0.3% decline (+682) from 2024.
- Quest Diagnostics had 56,855 employees in 2024, a 0.3% decline (+372) from 2023.
- Quest Diagnostics had 56,483 employees in 2023, a 0.9% decline (-1,414) from 2022.
Quest Diagnostics's total workforce has grown from 57,177 employees in 2023 to 57,614 in 2026.
Quest Diagnostics, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 57,614 | +733 | -0.1% |
| 2025 | Q4 | 57,537 | +682 | -0.3% |
| 2025 | Q3 | 57,344 | +490 | -0.3% |
| 2025 | Q2 | 57,194 | +480 | -0.4% |
| 2025 | Q1 | 56,881 | +522 | -0.3% |
| 2024 | Q4 | 56,855 | +372 | -0.3% |
| 2024 | Q3 | 56,854 | +34 | -0.2% |
| 2024 | Q2 | 56,714 | -463 | -0.4% |
| 2024 | Q1 | 56,359 | -1,158 | -0.6% |
| 2023 | Q4 | 56,483 | -1,414 | -0.9% |
| 2023 | Q3 | 56,820 | -1,934 | -1.5% |
| 2023 | Q2 | 57,177 | -2,125 | -1.3% |
See Quest Diagnostics's complete headcount history, including quarterly breakdowns.
Get the DataQuest Diagnostics Employee Count by Region (2026)
North America accounts for the largest share of Quest Diagnostics's global workforce with approximately 91% of total employees, followed by South Asia and South America.
Quest Diagnostics employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 51,725 | 90.6% |
| South Asia | 2,064 | 3.6% |
| South America | 1,070 | 1.9% |
| Central America and the Caribbean | 652 | 1.1% |
| Northern Europe | 514 | 0.9% |
| Sub-Saharan Africa | 266 | 0.5% |
| Western Europe | 216 | 0.4% |
| Arab States | 137 | 0.2% |
| Southeast Asia | 128 | 0.2% |
| Southern Europe | 98 | 0.2% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataQuest Diagnostics Employee Count by Department (2026)
Quest Diagnostics's employee groups are Engineering (47.9%), Finance and Operations (36.5%), and Sales and Marketing (15.6%).
Quest Diagnostics employees by department
| Department | Employees | % of Total |
|---|---|---|
| Engineering | 27,478 | 47.9% |
| Finance and Operations | 20,908 | 36.5% |
| Sales and Marketing | 8,975 | 15.6% |
Compare Quest Diagnostics's department mix to industry peers.
See Full DataQuest Diagnostics Employee Salary by Region (2026)
Quest Diagnostics's average employee salary is $65,606 globally. Employees in Northern Europe receive the highest compensation. Pay is lowest in South Asia, at a median of $8,000.
Quest Diagnostics median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| Pacific Islands | $94,000 |
| Northern Europe | $58,000 |
| Western Europe | $57,000 |
| North America | $53,000 |
| Central and Western Asia | $37,000 |
| East Asia | $35,000 |
| Southern Europe | $34,000 |
| Eastern Europe | $33,000 |
| Arab States | $31,000 |
| Central America and the Caribbean | $21,000 |
| South America | $13,000 |
| North Africa | $10,000 |
| Southeast Asia | $10,000 |
| Sub-Saharan Africa | $9,000 |
| South Asia | $8,000 |
Unlock salary by role, level, and city — and compare to Quest Diagnostics's industry peers.
Unlock Salary DataQuest Diagnostics Job Openings and Hiring Trends (2023-2026)
- Quest Diagnostics had 3,447 active job postings in 2026, a 19.4% increase (+246) from 2025.
- Quest Diagnostics had 3,201 active job postings in 2025, a 4.6% increase (+143) from 2024.
- Quest Diagnostics had 3,058 active job postings in 2024, a 18.6% decline (-627) from 2023.
- Quest Diagnostics had 3,685 active job postings in 2023, a 88.0% decline from 2022.
- Hiring velocity in 2026: 1,529 new roles/month, down from 2,066 in 2025 and 2,229 in 2024.
Quest Diagnostics's active job postings rose 19.4% in 2026 to 3,447, with new postings per month cooling from 3,680 in 2023 to 1,529 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataQuest Diagnostics Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Quest Diagnostics's workforce based on public professional data. Overall sentiment is negative and has declined year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Unlock SentimentSimilar Companies
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Frequently Asked Questions About Quest Diagnostics
- How fast is Quest Diagnostics growing?
- In 2026, Quest Diagnostics's headcount shrank 0.1% to 57,614 employees, up from 56,881 in 2025.
- See the full headcount history
- Where are Quest Diagnostics employees located?
- Most Quest Diagnostics employees are based in North America (90.6% of headcount), followed by South Asia and South America.
- Explore where the workforce is based
- What is the average salary at Quest Diagnostics?
- The average employee salary at Quest Diagnostics is approximately $65.6k per year.
- Analyze the salary distribution
- How many new job postings does Quest Diagnostics open per year?
- In Q1 2026, Quest Diagnostics opened 4,588 new job postings. In 2025, Quest Diagnostics opened 24,792 new job postings — about 2,066 per month.
- Track hiring trends by role
- When was Quest Diagnostics founded and where is it headquartered?
- Quest Diagnostics was founded in 1967 and is headquartered in Secaucus, New Jersey.
- Compare Quest Diagnostics to industry peers
Speak with a workforce expert about Quest Diagnostics.
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