| Ref No | Year | Description | Type | U.M. | F.U. | FDC |
|---|---|---|---|---|---|---|
| S20-1 | 2020 | Zodiac Series - Rat | 2v | 3.00 | 3.00 | 4.00 |
| S20-1P | 2020 | Zodiac Series - Rat | mini-sheet | 9.00 | - | - |
| S20-1a | 2020 | Zodiac Series - Rat (1v) | self-adhesive | 1.00 | 1.00 | - |
| S20-1C | 2020 | Zodiac Series - Rat | Collector's sheet | 25.00 | - | - |
| S20-1M | 2020 | Steamboat | MS | 12.50 | - | 13.50 |
| S20-2 | 2020 | 200 Years of Policing | 6v | 7.50 | 7.50 | 8.50 |
| S20-3 | 2020 | Singapore Mascots | 5v | 3.50 | 4.50 | 3.50 |
| S20-4 | 2020 | Quirks in the Island City | 5v | 6.50 | 6.50 | 7.50 |
| S20-4M | 2020 | Quirks in the Island City | MS | 3.00 | 3.00 | 4.00 |
| S20-5 | 2020 | COVID-19 Series 1: The Soaper 5 | 6v | 4.50 | 4.50 | 5.50 |
| S20-6 | 2020 | 75th Anniversary of the End of World War II | 5v | 5.00 | 5.00 | 6.00 |
| S20-7 | 2020 | Singapore Skyline | 2v | 5.00 | 5.00 | 6.00 |
| S20-8 | 2020 | Joint Issue with Hungary: Bridges | 2v | 4.00 | 4.00 | 5.00 |
| S20-8M | 2020 | Joint Issue with Hungary: Bridges | MS | 4.50 | 4.50 | 5.50 |
| S20-9 | 2020 | 75th Anniversary of the United Nations | 4v | 5.00 | 5.00 | 6.00 |
| S20-10 | 2020 | We Care | 4v | 2.00 | 2.00 | 3.00 |
| S20-11 | 2020 | Joint Issue with Mongolia | 2v | 4.00 | 4.00 | 5.00 |
| S20-11M | 2020 | Joint Issue with Mongolia | MS | 4.50 | 4.50 | 5.50 |
| S20-12 | 2020 | Maps of Early Singapore | 4v | 5.00 | 5.00 | 6.00 |