Ireland was the largest of Icon Plc’s 4 reported lines in fiscal 2025, at $3.18B — 39% of $8.25B.
| Geography | FY 2011 | FY 2020 | FY 2021 | FY 2023 | FY 2025 |
|---|---|---|---|---|---|
| United States | $3.28B | $2.52B | |||
| Ireland | $2.32B | $3.18B | |||
| Rest Of Europe | $1.57B | $1.59B | |||
| Rest Of World | $884.50M | $951.90M | |||
| Other | — | — | |||
| Total | $8.05B | $8.25B |
In fiscal 2025, which ended December 31, 2025, the 4 regions Icon Plc reported in this breakdown added up to $8.25B. That was up 2.4% from $8.05B in fiscal 2023, the latest earlier year this breakdown was reported. Ireland was the largest region, at $3.18B or 38.6% of the total, followed by United States ($2.52B, 30.6%) and Rest Of Europe ($1.59B, 19.3%). Together, the two largest regions made up 69.2% of this total.
Compared with fiscal 2023, the latest earlier year reported, Ireland grew the fastest, rising 37.4% to $3.18B. United States fell the most, down 23.0% to $2.52B. Over fiscal 2023 to 2025, revenue across these regions went from $8.05B to $8.25B, a compound annual growth rate of 1.2%. Ireland's share of the total rose from 28.8% to 38.6% over the same years.
The table also keeps 1 region that Icon Plc no longer reports, so earlier years can still be read on their original basis; use "Show 1 discontinued" beneath the table to see them. This breakdown covers 5 fiscal years between 2011 and 2025, as reported in Icon Plc's annual filings.
Other was the largest of Icon Plc’s 5 reported lines in fiscal 2025, at $2.97B — 36% of $8.25B.
| Customer | FY 2020 | FY 2021 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|
| Other | $2.99B | — | $2.97B | ||
| Clients 11-25 | $1.75B | — | $2.07B | ||
| Clients 2-5 | $1.45B | $1.42B | $1.47B | ||
| Clients 6-10 | $1.17B | — | $1.16B | ||
| Top Client | $704.03M | $641.66M | $576.27M | ||
| Total | $8.05B | $2.06B | $8.25B |
In fiscal 2025, which ended December 31, 2025, the 5 revenue lines Icon Plc reported in this breakdown added up to $8.25B. The revenue lines reported changed from fiscal 2024, so the total is not directly comparable with the $2.06B reported that year. Other was the largest revenue line, at $2.97B or 36.0% of the total, followed by Clients 11-25 ($2.07B, 25.1%) and Clients 2-5 ($1.47B, 17.8%). Together, the two largest revenue lines made up 61.1% of this total.
Compared with fiscal 2024, Clients 2-5 grew the fastest, rising 3.4% to $1.47B. Top Client fell the most, down 10.2% to $576.27M. Because revenue lines were added or dropped between the two years, part of this reflects how Icon Plc regrouped its reporting. Over fiscal 2023 to 2025, revenue across these revenue lines went from $8.05B to $8.25B, a compound annual growth rate of 1.2%. Other's share of the total fell from 37.1% to 36.0% over the same years.
This breakdown covers 5 fiscal years between 2020 and 2025, as reported in Icon Plc's annual filings.
As Reported was the largest of Icon Plc’s 2 reported lines in fiscal 2023, at $8.12B — 100% of $8.14B.
| Revision of Prior Period | FY 2023 |
|---|---|
| As Reported | $8.12B |
| Adjustments | $23.30M |
| Total | $8.14B |
In fiscal 2023, which ended December 31, 2023, the 2 revenue lines Icon Plc reported in this breakdown added up to $8.14B. As Reported was the largest revenue line, at $8.12B or 99.7% of the total, followed by Adjustments ($23.30M, 0.3%).
This breakdown covers every fiscal year from 2023 to 2023, as reported in Icon Plc's annual filings.
Icon Plc (ICLR) breaks its revenue down by region and revenue line. In fiscal 2025, its largest region was Ireland, with $3.18B or 38.6% of the total, followed by United States at $2.52B (30.6%).
Ireland was Icon Plc's largest region in fiscal 2025, with $3.18B in revenue, 38.6% of the $8.25B reported across its 4 regions.
Other was Icon Plc's largest revenue line in fiscal 2025, with $2.97B in revenue, 36.0% of the $8.25B reported across its 5 revenue lines.
Every figure is taken from Icon Plc's annual financial filings and shown as reported: each line keeps the name the company gives it, years follow its own fiscal calendar, and lines it has stopped reporting stay in the table for the years they were reported.
The breakdown by region covers fiscal 2011 to 2025. The latest four fiscal years are free to view, and the full history is available with a Business Quant subscription.