| Key | Value |
| admin_level | 6 |
| alt_name | County Derry |
| boundary | historic |
| is_in:country | United Kingdom |
| is_in:state | Northern Ireland |
| logainm:ref | 100011 |
| logainm:url | http://www.logainm.ie/100011.aspx |
| name:en | County Londonderry |
| name:ga | Contae Dhoire |
| old_name:1585-1609 | County Coleraine |
| place | county |
| type | boundary |
| wikidata | Q192208 |
| wikipedia | en:County Londonderry |