| Ainsdale Sands National Nature Reserve | 472.01 ha | | — |
| Rimrose Valley Park | 113.83 ha | | — |
| Crossens Marsh RSPB | 101.3 ha | | — |
| Lunt Meadows Nature Reserve Lancashire Wildlife Trust | 65.74 ha | | — |
| Seaforth Nature Reserve | 29.79 ha | | — |
| Cabin Hill National Nature Reserve | 25.44 ha | | — |
| Victoria Park | 16.31 ha | | — |
| Hesketh Park | 12.34 ha | | — |
| South Park | 9.19 ha | | — |
| Derby Park | 8.86 ha | | — |
| Kings Gardens | 8.18 ha | | — |
| North Park Sefton Council | 7.86 ha | | — |
| Botanic Gardens | 7.72 ha | | — |
| Victoria Park | 7.3 ha | | — |
| Princess Park | 6.64 ha | | — |
| Bedford Park | 6.56 ha | | — |
| Moorside Park | 6.56 ha | | — |
| Marian Square Park | 5.4 ha | | — |
| Duke Street Park | 4.44 ha | | — |
| Hatton Hill Park | 3.74 ha | | — |
| Glenn Park | 3.58 ha | | — |
| Sandy Lane Park | 3.47 ha | | — |
| Balls Wood Park | 3.19 ha | | — |
| Coronation Park | 2.81 ha | | — |
| Ainsdale Village Park | 2.44 ha | | — |
| Rainbow Park | 2.4 ha | | — |
| Copy Farm Park | 2.15 ha | | — |
| The Crescent Garden | 1.74 ha | | — |
| Crosby Coastal Park | 1.6 ha | | — |
| Abbeyfield Park | 1.52 ha | | — |
| Alexandra Park | 1.46 ha | | — |
| The Marine Garden | 1.38 ha | | — |
| Poets Park Sefton Council | 1.36 ha | | — |
| The Beach Lawn | 1.24 ha | | — |
| Dodds Park | 1.2 ha | | — |
| Springfield Park | 1.02 ha | | — |
| Lydiate Parish Hall Park | 1.01 ha | | — |
| Bowersdale Park | 0.95 ha | | — |
| Moss Park Playing Field | 0.92 ha | | — |
| Adelaide Garden | 0.89 ha | | — |
| Mersey Park | 0.84 ha | | — |
| Marsh Lane Park | 0.58 ha | | — |
| Captain's Green | 0.56 ha | | — |
| Model Railway Village | 0.5 ha | | — |
| Rose Garden | 0.39 ha | | — |
| South Park Community Garden Friends of South Park | 0.39 ha | | — |
| Red Rum Garden | 0.38 ha | | — |
| Fernbank Park | 0.27 ha | | — |
| Netherton Green | 0.26 ha | | — |
| North Park Community Garden The Gateway Collective | 0.25 ha | | — |
| Ford Lane Community Garden B4Biodiversity | 0.14 ha | | — |
| BAAP22 Open land between Irlam Road and the Asda Store Sefton Council | — | | — |
| Freshfield Dune Heath Nature Reserve | — | | — |
| Lunt Meadows Nature Reserve Lancashire Wildlife Trust | — | | — |
| North Meols Civic Garden North Meols Civic Society | — | | — |