Donegal, Fermanagh, Cavan, Longford, Roscommon and Sligo.
Louth, Down, Monaghan, Tyrone
Derry and Down
Antrim, Armagh and Louth.
Derry and Down
Limerick and Cork are the counties that border county Kerry.
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San Diego County and Imperial County are the California counties that border Mexico.
Monmouth County, Ocean County, and Atlantic County.
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Hancock county, Harrison county, and Jackson county. The three Southernmost counties that border the Gulf of Mexico.
Mclean, Woodford, Peoria, Fulton, Mason, and Logan are the counties that border Tazwell county
5 counties border the county of Kilkenny. They are Laois, Wexford, Carlow, Tipperary and Waterford.
Randolph County is bordered by six counties in central North Carolina. These counties are Guilford, Davidson, Montgomery, Moore, Chatham, and Alamance.
Well you have Laois which is surrounded by counties that do not have a sea border.
Owen, Scott. Woodford, Andersom. Shelby and Henry counties.