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Learn more about Tetra Tech's Revenue by Segment and Revenue by Region.
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Explore additional financial metrics for Tetra Tech.
| 2015 | 13000 |
|---|---|
| 2016 | 16000 |
| 2017 | 16000 |
| 2018 | 17000 |
| 2019 | 20000 |
| 2020 | 20000 |
| 2021 | 21000 |
| 2022 | 21000 |
| 2023 | 27000 |
| 2024 | 30000 |
| 2025 | 25000 |
Tetra Tech's number of employees was 25,000 in fiscal year 2025.
Tetra Tech's number of employees was 30,000 in fiscal year 2024.
Tetra Tech's number of employees was 27,000 in fiscal year 2023.
Tetra Tech's number of employees was 21,000 in fiscal year 2022.
Tetra Tech's number of employees was 21,000 in fiscal year 2021.
Tetra Tech's number of employees was 20,000 in fiscal year 2020.
Tetra Tech's number of employees was 20,000 in fiscal year 2019.
Tetra Tech's number of employees was 17,000 in fiscal year 2018.
Tetra Tech's number of employees was 16,000 in fiscal year 2017.
Tetra Tech's number of employees was 16,000 in fiscal year 2016.
| 2015 | 0 |
|---|---|
| 2016 | 23.08 |
| 2017 | 0 |
| 2018 | 6.25 |
| 2019 | 17.65 |
| 2020 | 0 |
| 2021 | 5 |
| 2022 | 0 |
| 2023 | 28.57 |
| 2024 | 11.11 |
| 2025 | -16.67 |
Tetra Tech's number of employees
decreased -16.67
%
during fiscal year 2025
compared to 2024.
It represents a decline of
5,000 employees from
30,000 (in
2024)
to 25,000 (in
2025).
Tetra Tech's number of employees
increased 11.11
%
during fiscal year 2024
compared to 2023.
It represents a increase of
3,000 employees from
27,000 (in
2023)
to 30,000 (in
2024).
Tetra Tech's number of employees
increased 28.57
%
during fiscal year 2023
compared to 2022.
It represents a increase of
6,000 employees from
21,000 (in
2022)
to 27,000 (in
2023).
Tetra Tech's number of employees remained
unchanged during fiscal year 2022
compared to 2021.
It represents no change in employees from
21,000 (in
2021)
to 21,000 (in
2022).
Tetra Tech's number of employees
increased 5
%
during fiscal year 2021
compared to 2020.
It represents a increase of
1,000 employees from
20,000 (in
2020)
to 21,000 (in
2021).
Tetra Tech's number of employees remained
unchanged during fiscal year 2020
compared to 2019.
It represents no change in employees from
20,000 (in
2019)
to 20,000 (in
2020).
Tetra Tech's number of employees
increased 17.65
%
during fiscal year 2019
compared to 2018.
It represents a increase of
3,000 employees from
17,000 (in
2018)
to 20,000 (in
2019).
Tetra Tech's number of employees
increased 6.25
%
during fiscal year 2018
compared to 2017.
It represents a increase of
1,000 employees from
16,000 (in
2017)
to 17,000 (in
2018).
Tetra Tech's number of employees remained
unchanged during fiscal year 2017
compared to 2016.
It represents no change in employees from
16,000 (in
2016)
to 16,000 (in
2017).
Tetra Tech's number of employees
increased 23.08
%
during fiscal year 2016
compared to 2015.
It represents a increase of
3,000 employees from
13,000 (in
2015)
to 16,000 (in
2016).
| Period | Employees | Year-over-Year Change |
|---|---|---|
| 2025 | 25,000 |
-5,000
16.67%
|
| 2024 | 30,000 |
3,000
11.11%
|
| 2023 | 27,000 |
6,000
28.57%
|
| 2022 | 21,000 |
0
0%
|
| 2021 | 21,000 |
1,000
5%
|
| 2020 | 20,000 |
0
0%
|
| 2019 | 20,000 |
3,000
17.65%
|
| 2018 | 17,000 |
1,000
6.25%
|
| 2017 | 16,000 |
0
0%
|
| 2016 | 16,000 |
3,000
23.08%
|
