How many employees work at ICON?
ICON plc (ICLR) has approximately 37,701 total employees worldwide as of December 2025, according to Revelio Labs workforce intelligence data. ICON's total headcount has grown 1.6% from 37,112 employees in 2023 to 37,701 in 2025.
Data source: Revelio LabsCoverage: Global workforce, 2023–2026Published June 2026
Is ICON hiring right now?
Yes, ICON is actively hiring. ICON had 1,649 active job postings in 2025, a 22.5% increase from 2024 — see job openings & hiring trends.
About ICON's Workforce
ICON plc (ICLR) is a Biotech and Healthcare Services company that employs 37,701 people worldwide as of December 2025. It is the 3rd-largest by headcount among its peers. Founded in 1989, the company is headquartered in Dublin, Ireland and trades on the NASDAQ.
ICON's workforce has grown 1.6% from 2023 to 2025, though it is down 1.5% year over year in 2025. It fell to a low of 36,647 in 2025 Q2 before recovering. Its workforce is concentrated most in the United States (21.9%), followed by India (19.1%) and the United Kingdom (7.1%), with Spain, its fastest-growing location.
ICON's largest functional groups are Finance and Operations (55.2%), Sales and Marketing (23.3%), and Engineering (21.5%), with Finance and Operations growing fastest (up 2.2%). Median employee tenure is 3.3 years. The average salary is $60,963, ranging from a median of $104,000 in Northern America to $7,000 in Southern Asia.
ICON's active job postings rose 22.5% in 2025 to 1,649, with new postings per month cooling from 1,544 in 2023 to 1,393 in 2025. Overall employee sentiment is neutral but declining.
Sourced from Revelio Labs workforce data.
As of December 2025
ICON
workforce metrics
Headcount
37.7k
1.5% YoY
Avg. Salary
$61k
4.5% YoY
Tenure
3.3yr
0.3yr YoY
Growth Rate
-1.5%
3.1pts YoY
Hiring Rate
Attrition Rate
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for ICON. Compare to peers, export the dataset, and access the full quarterly history.
- ICON had 37,701 employees in 2025, a 1.5% decline (-569) from 2024.
- ICON had 38,270 employees in 2024, a 1.6% increase (+608) from 2023.
- ICON had 37,662 employees in 2023, a 2.4% increase (+880) from 2022.
ICON's total workforce has grown from 36,647 employees in 2025 to 37,701 in 2025. ICON's headcount peaked at 38,400 in 2024 before declining in 2025 and recovering through 2025.
ICON plc — quarterly employee count (2023–2025)
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2025 | Q4 | 37,701 | -569 | -1.5% |
| 2025 | Q3 | 36,989 | -1,411 | -3.7% |
| 2025 | Q2 | 36,647 | -1,479 | -4.0% |
| 2025 | Q1 | 37,452 | -463 | -1.2% |
| 2024 | Q4 | 38,270 | +608 | +1.6% |
| 2024 | Q3 | 38,400 | +669 | +1.8% |
| 2024 | Q2 | 38,126 | +594 | +1.6% |
| 2024 | Q1 | 37,915 | +803 | +2.1% |
| 2023 | Q4 | 37,662 | +880 | +2.4% |
| 2023 | Q3 | 37,731 | +1,432 | +3.9% |
| 2023 | Q2 | 37,532 | +2,175 | +6.0% |
| 2023 | Q1 | 37,112 | +3,118 | +8.8% |
Want to see ICON's complete headcount history back to 2017, including quarterly breakdowns?
The United States accounts for the largest share of ICON's global workforce with approximately 22% of total employees, followed by India and the United Kingdom. ICON's headcount in Spain is growing fastest among its major locations, up 4.8% year over year in 2025.
ICON employees by country — 2025
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 8,255 | 21.9% | -0.4% |
| India | 7,195 | 19.1% | +2.7% |
| United Kingdom | 2,660 | 7.1% | +1.6% |
| Mexico | 2,032 | 5.4% | +2.4% |
| Poland | 1,685 | 4.5% | +0.9% |
| Ireland | 1,603 | 4.3% | -1.3% |
| Spain | 1,153 | 3.1% | +4.8% |
| China | 1,086 | 2.9% | -0.7% |
| France | 973 | 2.6% | -0.9% |
| Bulgaria | 856 | 2.3% | +8.9% |
Drill into city-level data, hiring trends by region and historic geographic shifts
ICON's largest employee groups are Finance and Operations (55.2%), Sales and Marketing (23.3%), and Engineering (21.5%).
ICON employees by department — 2025
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 20,709 | 55.2% | +2.2% |
| Sales and Marketing | 8,729 | 23.3% | +1.4% |
| Engineering | 8,048 | 21.5% | +0.7% |
Compare ICON's department mix to industry peers.
ICON's average employee salary is $60,963 globally. Employees in Northern America receive the highest compensation, with median pay approximately 1.7x the global average. Pay is lowest in Southern Asia, at a median of $7,000.
ICON median employee salary by region — 2025 (USD)
| Region | Median Salary |
|---|---|
| Northern America | $104,000 |
| Pacific Islands | $82,000 |
| Western Europe | $79,000 |
| Northern Europe | $79,000 |
| Southern Europe | $48,000 |
| Arab States | $48,000 |
| Eastern Asia | $37,000 |
| Eastern Europe | $31,000 |
| Central and Western Asia | $28,000 |
| Sub-Saharan Africa | $23,000 |
| South-Eastern Asia | $20,000 |
| Southern America | $19,000 |
| Central America and the Caribbean | $18,000 |
| Northern Africa | $15,000 |
| Southern Asia | $7,000 |
Unlock salary by role, level, and city — and compare to ICON's industry peers.
- ICON had 1,649 active job postings in 2025, a 22.5% increase (+333) from 2024.
- ICON had 1,316 active job postings in 2024, a 4.9% decline (-66) from 2023.
- ICON had 1,382 active job postings in 2023, a 45.1% increase from 2022.
- Hiring velocity in 2025: 1,393 new roles/month, up from 1,071 in 2024 and 1,544 in 2023. New metric
ICON's active job postings rose 22.5% in 2025 to 1,649, with new postings per month cooling from 1,544 in 2023 to 1,393 in 2025.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Revelio Labs tracks employee sentiment across ICON's workforce based on public professional data. Overall sentiment is neutral and has declined year over year in 2025.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Similar Biotech and Healthcare Services Companies by Employee Count
- How fast is ICON growing?
- In 2025, ICON's headcount shrank 1.5% to 37,701 employees, down from 38,270 in 2024.
- Where are ICON employees located?
- Most ICON employees are based in the United States (21.9% of headcount), followed by India and the United Kingdom.
- What is the average salary at ICON?
- The average employee salary at ICON is approximately $61k per year.
- How many people does ICON hire per year?
- In 2025, ICON opened roughly 16,716 new roles — about 1,393 per month.
- When was ICON founded and where is it headquartered?
- ICON was founded in 1989 and is headquartered in Dublin, Ireland.
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