Five counties, which are Kilkenny, Kildare, Carlow, Tipperary and Offaly.
5 counties border the county of Kilkenny. They are Laois, Wexford, Carlow, Tipperary and Waterford.
Well you have Laois which is surrounded by counties that do not have a sea border.
7 Counties border it. Tipperary, Laois, Kildare, Meath, Westmeath, Roscommon and Galway. The river Shannon separates Offaly from both Roscommon and Galway. See the maps below.
Cork, Limerick, Clare, Galway, Offaly, Laois, Kilkenny and Waterford
Laois, Wexford, Carlow, Tipperary and Waterford border county Kilkenny. It does not have any coastline.
8 counties. They are: Waterford, Cork, Limerick, Kilkenny, Clare, Galway, Offaly and Laois.
Leinster has 7 inland counties -- Kilkenny, Carlow, Laois, Offaly, Westmeath, Kildare and Longford
15 Irish counties would be regarded as land-locked:ArmaghTyroneMonaghanCavanLongfordOffalyLimerickTipperaryKildareKilkennyLaoisCarlowRoscommonWestmeathFermanaghSee the related question below.
Derbyshire is bordered by six counties: Cheshire, Greater Manchester, South Yorkshire, West Yorkshire, Nottinghamshire, and Leicestershire.
The United States is bordered by 2 countries: Canada to the north and Mexico to the south.
There are two counties that border Lake Cumberland in Kentucky.
Ten counties in Indiana border Ohio.