County Down on Wikipedia.

Annahilt, Church of the Ascension, (Church of Ireland). © Jack Storey, Monaghan Genealogy Specialist.
Ardglass, Church of Ireland. © Jack Storey, Monaghan Genealogy Specialist.

Ballygowan, Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.
Ballykinlar, St. Patrick and St. Joseph (R.C.) at North Tyrella. © Len Brankin.
Ballyroney, the Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.
Banbridge, Magherally Presbyterian Church. Magherally Ruined Church. Both © Jack Storey, Monaghan Genealogy Specialist.

Carrowdore, Christ Church (CoI). Many members of the Crommellin family of Carrowdore Castle are buried here. © Jack Storey, Monaghan Genealogy Specialist.
Clough, Church of Ireland. © Jack Storey, Monaghan Genealogy Specialist.
Comber, 1st Comber Presbyterian Church. Comber 2nd Presbyterian Church. Both © Jack Storey, Monaghan Genealogy Specialist.
Crossgar, Christ Church (Church of Ireland) at Kilmore. © Jack Storey, Monaghan Genealogy Specialist.

Donaghcloney, Methodist Church. © Jack Storey, Monaghan Genealogy Specialist.
Downpatrick.
Dromore.
Drumballyroney, Church of Ireland. Famous for its Bronte connections, several members of the family are buried here, and Charlotte and Emily's father preached here. © Jack Storey, Monaghan Genealogy Specialist.
Drumbeg, Church of Ireland. © Jack Storey, Monaghan Genealogy Specialist.
Drumbo, Ballylesson Trinity Church, (Church of Ireland). © Jack Storey, Monaghan Genealogy Specialist.
Dundrum, Sacred Heart (R.C.). © Len Brankin.

Hillsborough.
Holywood.

Katesbridge, Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.
Killinchy, Parish Church. © Jack Storey, Monaghan Genealogy Specialist.
Killyleagh, Presbyterian Church. Church of Ireland. First Killyleagh Presbyterian Church. All © Jack Storey, Monaghan Genealogy Specialist.

Lambeg, Church of Ireland. © Jack Storey, Monaghan Genealogy Specialist.
Lisburn.
Listooder, the Kilmore Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.

Magheralin, Church of the Holy & Undivided Trinity (Church of Ireland). © Jack Storey, Monaghan Genealogy Specialist. St. Patrick (R.C.). © Len Brankin. Link.

Newry.

Rademon, Non-Subscribing Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.
Raffrey, Presbyterian Church. © Jack Storey, Monaghan Genealogy Specialist.

Saintfield, Church of Ireland. © Jack Storey, Monaghan Genealogy Specialist.
Saul, St. Patrick's Memorial Church (CoI). This sign tells its story. Both © Jack Storey, Monaghan Genealogy Specialist.