| Accreditation | Unaccredited |
| Address_line_1 | Liberty Road |
| Address_line_3 | Castletown |
| Admin_hierarchy | /England/South West (English Region)/Dorset (English County)/Weymouth and Portland (English District or Borough) |
| Deprivation_index | 2 |
| Deprivation_index_crime | 5 |
| Deprivation_index_education | 2 |
| Deprivation_index_employment | 3 |
| Deprivation_index_health | 3 |
| Deprivation_index_housing | 1 |
| Deprivation_index_income | 3 |
| Deprivation_index_services | 1 |
| Geodemographic_group | Remoter Coastal Living |
| Geodemographic_group_code | 3br |
| Geodemographic_group_name_long | 3br-Remoter Coastal Living |
| Geodemographic_subgroup | Seaside Living |
| Geodemographic_subgroup_code | 3b2r |
| Geodemographic_subgroup_name_long | 3b2r-Seaside Living |
| Geodemographic_supergroup | Countryside Living |
| Geodemographic_supergroup_code | 3r |
| Geodemographic_supergroup_name_long | 3r-Countryside Living |
| Governance | Independent-English_Heritage |
| Latitude | 50.568145 |
| Longitude | -2.446563 |
| Name_of_museum | Portland Castle |
| Postcode | DT5 1AZ |
| Primary_provenance_of_data | musassoc |
| Region_country | South West |
| Size | medium |
| Size_prov | visitbritain |
| Subject_Matter | War_and_conflict-Castles_and_forts |
| Town_or_City | Portland |
| Visitor_Numbers_Data | 3:20582:2013:VisitBritain |
| Year_closed | 9999:9999 |
| Year_closed_source | https://www.tripadvisor.co.uk/Attraction_Review-g551714-d1875266-Reviews-Portland_Castle-Isle_of_Portland_Dorset_England.html |
| Year_opened | 1960:2017 |
| Year_opened_source | [RANGE] |
| media | 0 |
| project_id | mm.musa.286 |