Journal Abbreviation: P NATL ACAD SCI USA
Journal ISSN: 0027-8424
| Year | Impact Factor (IF) | Total Articles | Total Cites |
| 2024 (2025 update) | 9.1 | - | 734320 |
| 2023 | 9.4 | 2802 | 730197 |
| 2022 | 11.1 | - | 788686 |
| 2021 | 12.779 | - | 860450 |
| 2020 | 11.205 | 3633 | 799058 |
| 2019 | 9.412 | 3347 | 676425 |
| 2018 | 9.580 | 3269 | 661118 |
| 2017 | 9.504 | 3261 | 637268 |
| 2016 | 9.661 | 3187 | 620027 |
| 2015 | 9.423 | 3281 | 593284 |
| 2014 | 9.674 | 3579 | 586144 |
| 2013 | 9.809 | 3901 | 565934 |
| 2012 | 9.737 | 3801 | 534951 |
| 2011 | 9.681 | 3614 | 504243 |