How many employees work at Space Telescope Science?
Space Telescope Science Institute has approximately 631 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Space Telescope Science's total headcount has grown 4.4% from 604 employees in 2023 to 631 in 2026.
Data source: Revelio LabsCoverage: Global workforce, 2023–2026Published July 2026
Is Space Telescope Science hiring right now?
Yes, Space Telescope Science is actively hiring. Space Telescope Science had 36 active job postings in 2026, a 17.7% decline from 2025 — see job openings & hiring trends.
About Space Telescope Science's Workforce
Space Telescope Science Institute is a Research and Development company founded in 1982 and headquartered in Baltimore, Maryland, employing 631 people as of March 2026 and ranking 11th by headcount among its peers.
Space Telescope Science's workforce has grown 4.4% from 2023 to 2026 and is up 0.9% year over year in 2026. Its employees are concentrated primarily in the United States (98.3%), with India at 0.6% and Morocco at 0.4%, and India is the fastest-growing location.
Space Telescope Science's largest groups by headcount are Finance and Operations (45.7%), Engineering (31.5%), and Sales and Marketing (22.8%), with Engineering the fastest-growing group (up 1.7%). The average tenure is 6.2 years, and the overall average salary is $112,967, with a regional spread of $108,000 median in Northern America and $4,000 median in Southern Asia.
Space Telescope Science's hiring activity declined, with postings down 17.7% in 2026 to 36 active postings; new postings per month have trended from 37 in 2023 to 23 in 2026. Employee sentiment is positive and flat overall.
Sourced from Revelio Labs workforce data.
As of March 2026
Space Telescope Science
workforce metrics
Headcount
631
0.9% YoY
Avg. Salary
$113k
0.8% YoY
Tenure
6.2yr
0.3yr YoY
Growth Rate
0.9%
0.6pts YoY
Hiring Rate
Attrition Rate
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Space Telescope Science. Compare to peers, export the dataset, and access the full quarterly history.
- Space Telescope Science had 631 employees in 2026, a 0.9% increase (+6) from 2025.
- Space Telescope Science had 623 employees in 2025, a 1.1% decline (-7) from 2024.
- Space Telescope Science had 630 employees in 2024, a 1.4% increase (+9) from 2023.
- Space Telescope Science had 621 employees in 2023, a 3.8% increase (+23) from 2022.
Space Telescope Science's total workforce has grown from 604 employees in 2023 to 631 in 2026.
Space Telescope Science Institute — quarterly employee count (2023–2026)
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 631 | +6 | +0.9% |
| 2025 | Q4 | 623 | -7 | -1.1% |
| 2025 | Q3 | 625 | -9 | -1.5% |
| 2025 | Q2 | 646 | +6 | +0.9% |
| 2025 | Q1 | 625 | +3 | +0.4% |
| 2024 | Q4 | 630 | +9 | +1.4% |
| 2024 | Q3 | 634 | +24 | +3.9% |
| 2024 | Q2 | 640 | +36 | +5.8% |
| 2024 | Q1 | 622 | +20 | +3.4% |
| 2023 | Q4 | 621 | +23 | +3.8% |
| 2023 | Q3 | 610 | +27 | +4.5% |
| 2023 | Q2 | 604 | +21 | +3.7% |
Want to see Space Telescope Science's complete headcount history back to 2008, including quarterly breakdowns?
The United States accounts for the largest share of Space Telescope Science's global workforce with approximately 98% of total employees, followed by India and Morocco.
Space Telescope Science employees by country — 2026
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 618 | 98.3% | -1.6% |
| India | 4 | 0.6% | +0.0% |
| Morocco | 3 | 0.4% | +0.0% |
| United Kingdom | 2 | 0.3% | +0.0% |
| France | 1 | 0.2% | +0.0% |
| Greece | 1 | 0.2% | +0.0% |
| Brazil | 0 | 0.1% | +0.0% |
Drill into city-level data, hiring trends by region and historic geographic shifts
Space Telescope Science's largest employee groups are Finance and Operations (45.7%), Engineering (31.5%), and Sales and Marketing (22.8%).
Space Telescope Science employees by department — 2026
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 291 | 45.7% | -2.9% |
| Engineering | 200 | 31.5% | +1.7% |
| Sales and Marketing | 145 | 22.8% | -1.6% |
Compare Space Telescope Science's department mix to industry peers.
Space Telescope Science's average employee salary is $112,967 globally. Employees in Northern America receive the highest compensation. Pay is lowest in Southern Asia, at a median of $4,000.
Space Telescope Science median employee salary by region — 2026 (USD)
| Region | Median Salary |
|---|---|
| Northern America | $108,000 |
| Southern Asia | $4,000 |
Unlock salary by role, level, and city — and compare to Space Telescope Science's industry peers.
- Space Telescope Science had 36 active job postings in 2026, a 17.7% decline (+19) from 2025.
- Space Telescope Science had 17 active job postings in 2025, a 93.8% decline (-30) from 2024.
- Space Telescope Science had 47 active job postings in 2024, a 36.5% decline (-21) from 2023.
- Space Telescope Science had 68 active job postings in 2023, a 1.5% increase from 2022.
- Hiring velocity in 2026: 23 new roles/month, up from 17 in 2025 and 25 in 2024. New metric
Space Telescope Science's hiring is slowing: active job postings fell 17.7% in 2026 to 36, with new postings per month cooling from 37 in 2023 to 23 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Revelio Labs tracks employee sentiment across Space Telescope Science's workforce based on public professional data. Overall sentiment is positive and has held steady year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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- How fast is Space Telescope Science growing?
- In 2026, Space Telescope Science's headcount grew 0.9% to 631 employees, up from 625 in 2025.
- Where are Space Telescope Science employees located?
- Most Space Telescope Science employees are based in the United States (98.3% of headcount), followed by India and Morocco.
- What is the average salary at Space Telescope Science?
- The average employee salary at Space Telescope Science is approximately $113k per year.
- How many people does Space Telescope Science hire per year?
- In 2026, Space Telescope Science opened roughly 276 new roles — about 23 per month.
- When was Space Telescope Science founded and where is it headquartered?
- Space Telescope Science was founded in 1982 and is headquartered in Baltimore, Maryland.
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