表面積は国の総面積で、内陸水域および一部の沿岸水路下の面積を含みます。
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| カメルーン | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 | 475,440 |
| 中央アフリカ共和国 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 | 622,980 |
| チャド | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 | 1,284,000 |
| コンゴ | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 | 342,000 |
| 赤道ギニア | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 | 28,050 |
| ガボン | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 | 267,670 |