How many employees work at Illumina?
Illumina, Inc. (ILMN) has approximately 8,675 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Illumina’s total headcount has declined 12.8% from 9,947 employees in 2023 to 8,675 in 2026.
Is Illumina hiring right now?
Yes, Illumina is actively hiring. Illumina had 505 active job postings in 2026, a 22.7% increase from 2025 — see job openings & hiring trends.
About Illumina’s Workforce
Illumina, Inc. (ILMN) is a Biotech and Healthcare Services company that employs 8,675 people worldwide as of March 2026. It is the 6th-largest by headcount among its peers. Founded in 1998, the company is headquartered in San Diego, California and trades on the NASDAQ.
Illumina's workforce has declined 12.8% from 2023 to 2026, down 2.8% year over year in 2026. It fell to a low of 8,560 in 2025 Q3 before recovering. Its workforce is concentrated most in North America (55.1%), followed by Southeast Asia (12.6%) and Northern Europe (8.7%).
Illumina's functional groups are Finance and Operations (43.8%), Engineering (35.3%), and Sales and Marketing (20.9%), with Engineering growing fastest (up 1.7%). The average salary is $122,810, ranging from a median of $144,000 in North America to $19,000 in South Asia, down 2.3% year over year in 2026.
Illumina's active job postings rose 22.7% in 2026 to 505, with new postings per month cooling from 216 in 2023 to 206 in 2026. Overall employee sentiment is negative and declining.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: ILMN
- Headquarters
- San Diego, California
- Founded
- 1998
- Industry
- Biotech and Healthcare Services
- Employees
- 8,675
- YoY
- -2.8% (-112)
As of March 2026
Illumina workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Illumina. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsIllumina Annual Employee Count (2023-2026)
- Illumina had 8,675 employees in 2026, a 2.8% decline (-112) from 2025.
- Illumina had 8,614 employees in 2025, a 3.2% decline (-229) from 2024.
- Illumina had 8,843 employees in 2024, a 3.2% decline (-362) from 2023.
- Illumina had 9,205 employees in 2023, a 4.5% decline (-981) from 2022.
Illumina's total workforce has grown from 8,560 employees in 2025 to 8,675 in 2026. Illumina's headcount peaked at 9,947 in 2023 before declining in 2025 and recovering through 2026.
Illumina, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 8,675 | -112 | -2.8% |
| 2025 | Q4 | 8,614 | -229 | -3.2% |
| 2025 | Q3 | 8,560 | -302 | -3.7% |
| 2025 | Q2 | 8,581 | -361 | -3.8% |
| 2025 | Q1 | 8,787 | -219 | -2.5% |
| 2024 | Q4 | 8,843 | -362 | -3.2% |
| 2024 | Q3 | 8,862 | -576 | -3.2% |
| 2024 | Q2 | 8,942 | -1,005 | -5.2% |
| 2024 | Q1 | 9,006 | -1,014 | -4.7% |
| 2023 | Q4 | 9,205 | -981 | -4.5% |
| 2023 | Q3 | 9,438 | -1,006 | -5.0% |
| 2023 | Q2 | 9,947 | -407 | -2.3% |
See Illumina's complete headcount history, including quarterly breakdowns.
Get the DataIllumina Employee Count by Region (2026)
North America accounts for the largest share of Illumina's global workforce with approximately 55% of total employees, followed by Southeast Asia and Northern Europe.
Illumina employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 4,682 | 55.1% |
| Southeast Asia | 1,070 | 12.6% |
| Northern Europe | 735 | 8.7% |
| East Asia | 548 | 6.5% |
| South Asia | 483 | 5.7% |
| Western Europe | 415 | 4.9% |
| South America | 140 | 1.6% |
| Southern Europe | 123 | 1.5% |
| Pacific Islands | 76 | 0.9% |
| Sub-Saharan Africa | 61 | 0.7% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataIllumina Employee Count by Department (2026)
Illumina's employee groups are Finance and Operations (43.8%), Engineering (35.3%), and Sales and Marketing (20.9%).
Illumina employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 3,792 | 43.8% |
| Engineering | 3,054 | 35.3% |
| Sales and Marketing | 1,809 | 20.9% |
Compare Illumina's department mix to industry peers.
See Full DataIllumina Employee Salary by Region (2026)
Illumina's average employee salary is $122,810 globally. Employees in North America receive the highest compensation, with median pay approximately 1.2x the global average. Pay is lowest in South Asia, at a median of $19,000.
Illumina median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $144,000 |
| Pacific Islands | $111,000 |
| Northern Europe | $106,000 |
| Western Europe | $98,000 |
| Arab States | $97,000 |
| Southeast Asia | $85,000 |
| Southern Europe | $65,000 |
| Central and Western Asia | $63,000 |
| East Asia | $59,000 |
| Central America and the Caribbean | $34,000 |
| Eastern Europe | $33,000 |
| North Africa | $20,000 |
| South Asia | $19,000 |
| Sub-Saharan Africa | $19,000 |
| South America | $15,000 |
Unlock salary by role, level, and city — and compare to Illumina's industry peers.
Unlock Salary DataIllumina Job Openings and Hiring Trends (2023-2026)
- Illumina had 505 active job postings in 2026, a 22.7% increase (+129) from 2025.
- Illumina had 376 active job postings in 2025, a 27.5% increase (+91) from 2024.
- Illumina had 285 active job postings in 2024, a 9.2% increase (+25) from 2023.
- Illumina had 260 active job postings in 2023, a 31.1% increase from 2022.
- Hiring velocity in 2026: 206 new roles/month, down from 214 in 2025 and 212 in 2024.
Illumina's active job postings rose 22.7% in 2026 to 505, with new postings per month cooling from 216 in 2023 to 206 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataIllumina Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Illumina'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 Illumina
- How fast is Illumina growing?
- In 2026, Illumina's headcount shrank 2.8% to 8,675 employees, down from 8,787 in 2025.
- See the full headcount history
- Where are Illumina employees located?
- Most Illumina employees are based in North America (55.1% of headcount), followed by Southeast Asia and Northern Europe.
- Explore where the workforce is based
- What is the average salary at Illumina?
- The average employee salary at Illumina is approximately $122.8k per year.
- Analyze the salary distribution
- How many new job postings does Illumina open per year?
- In Q1 2026, Illumina opened 618 new job postings. In 2025, Illumina opened 2,568 new job postings — about 214 per month.
- Track hiring trends by role
- When was Illumina founded and where is it headquartered?
- Illumina was founded in 1998 and is headquartered in San Diego, California.
- Compare Illumina to industry peers
Speak with a workforce expert about Illumina.
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