How many employees work at Interstate Building?
Interstate Building Maintenance Corp. has approximately 373 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Interstate Building’s total headcount has declined 1.9% from 380 employees in 2023 to 373 in 2026.
Is Interstate Building hiring right now?
Yes, Interstate Building is actively hiring. Interstate Building had 92 active job postings in 2026, a 15.2% increase from 2025 — see job openings & hiring trends.
About Interstate Building’s Workforce
Interstate Building Maintenance Corp. is a Facility Management Services company that employs 373 people worldwide as of March 2026. It is the 9th-largest by headcount among its peers. Founded in 1988, the company is headquartered in Horsham, Pennsylvania.
Interstate Building's workforce has declined 1.9% from 2023 to 2026, down 0.7% year over year in 2026. Its workforce is concentrated most in North America (98.8%), followed by South Asia (0.8%) and Central America and the Caribbean (0.3%).
Interstate Building's functional groups are Finance and Operations (38.9%), Sales and Marketing (33.3%), and Engineering (27.8%). The average salary is $57,018, highest in North America at a median of $45,000, down 1.7% year over year in 2026.
Interstate Building's active job postings rose 15.2% in 2026 to 92, with new postings per month cooling from 122 in 2023 to 64 in 2026. Overall employee sentiment is positive and improving.
Sourced from Revelio Labs workforce data.
- Headquarters
- Horsham, Pennsylvania
- Founded
- 1988
- Industry
- Facility Management Services
- Employees
- 373
- YoY
- -0.7% (-9)
As of March 2026
Interstate Building workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Interstate Building. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsInterstate Building Annual Employee Count (2023-2026)
- Interstate Building had 373 employees in 2026, a 0.7% decline (-9) from 2025.
- Interstate Building had 376 employees in 2025, a 0.3% decline (-3) from 2024.
- Interstate Building had 379 employees in 2024, a 0% no change (-2) from 2023.
- Interstate Building had 381 employees in 2023, a 0% no change (-5) from 2022.
Interstate Building's total workforce has declined from 380 employees in 2023 to 373 in 2026. Interstate Building's headcount peaked at 382 in 2024.
Interstate Building Maintenance Corp. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 373 | -9 | -0.7% |
| 2025 | Q4 | 376 | -3 | -0.3% |
| 2025 | Q3 | 379 | +1 | +0.0% |
| 2025 | Q2 | 381 | +3 | -0.1% |
| 2025 | Q1 | 382 | +0 | -0.4% |
| 2024 | Q4 | 379 | -2 | -0.0% |
| 2024 | Q3 | 378 | -3 | -0.5% |
| 2024 | Q2 | 378 | -2 | -0.5% |
| 2024 | Q1 | 382 | -4 | +0.4% |
| 2023 | Q4 | 381 | -5 | -0.0% |
| 2023 | Q3 | 381 | -2 | +0.7% |
| 2023 | Q2 | 380 | -1 | +0.9% |
See Interstate Building's complete headcount history, including quarterly breakdowns.
Get the DataInterstate Building Employee Count by Region (2026)
North America accounts for the largest share of Interstate Building's global workforce with approximately 99% of total employees, followed by South Asia and Central America and the Caribbean.
Interstate Building employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 366 | 98.8% |
| South Asia | 3 | 0.8% |
| Central America and the Caribbean | 1 | 0.3% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataInterstate Building Employee Count by Department (2026)
Interstate Building's employee groups are Finance and Operations (38.9%), Sales and Marketing (33.3%), and Engineering (27.8%).
Interstate Building employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 140 | 38.9% |
| Sales and Marketing | 120 | 33.3% |
| Engineering | 100 | 27.8% |
Compare Interstate Building's department mix to industry peers.
See Full DataInterstate Building Employee Salary by Region (2026)
Interstate Building's average employee salary is $57,018 globally. Employees in North America receive the highest compensation.
Interstate Building median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $45,000 |
Unlock salary by role, level, and city — and compare to Interstate Building's industry peers.
Unlock Salary DataInterstate Building Job Openings and Hiring Trends (2023-2026)
- Interstate Building had 92 active job postings in 2026, a 15.2% increase (-21) from 2025.
- Interstate Building had 113 active job postings in 2025, a 62.8% increase (+54) from 2024.
- Interstate Building had 59 active job postings in 2024, a 54.3% decline (-44) from 2023.
- Interstate Building had 103 active job postings in 2023, a 35.9% decline from 2022.
- Hiring velocity in 2026: 64 new roles/month, down from 102 in 2025 and 113 in 2024.
Interstate Building's active job postings rose 15.2% in 2026 to 92, with new postings per month cooling from 122 in 2023 to 64 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataInterstate Building Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Interstate Building's workforce based on public professional data. Overall sentiment is positive and has improved year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Unlock SentimentSimilar Companies
Similar Facility Management Services Companies by Employee Count
Frequently Asked Questions About Interstate Building
- How fast is Interstate Building growing?
- In 2026, Interstate Building's headcount shrank 0.7% to 373 employees, down from 382 in 2025.
- See the full headcount history
- Where are Interstate Building employees located?
- Most Interstate Building employees are based in North America (98.8% of headcount), followed by South Asia and Central America and the Caribbean.
- Explore where the workforce is based
- What is the average salary at Interstate Building?
- The average employee salary at Interstate Building is approximately $57k per year.
- Analyze the salary distribution
- How many new job postings does Interstate Building open per year?
- In Q1 2026, Interstate Building opened 193 new job postings. In 2025, Interstate Building opened 1,229 new job postings — about 102 per month.
- Track hiring trends by role
- When was Interstate Building founded and where is it headquartered?
- Interstate Building was founded in 1988 and is headquartered in Horsham, Pennsylvania.
- Compare Interstate Building to industry peers
Speak with a workforce expert about Interstate Building.
Book a DemoSee something that doesn't look right? Reach out and our team will review it.