Many countries have Pacific borders. N & S America, Australia, New Zealand, Asia. Please redefine what you are asking.
No country in North America has only a border with the Pacific Ocean. There are several in the Caribbean that are in the Atlantic, but none with only the Pacific.
Belize
El Salvador is the only Central American country to border the Pacific Ocean but not the Atlantic Ocean.
El Salvador
Pacific and caribean
Chile has the longest border with the pacific ocean.
The Yukon Territories, and British Columbia border the Pacific Ocean.
Cameron schoeb look her up on Youtube
More states border the Atlantic Ocean than do the Pacific Ocean. There are 14 states that border the Atlantic and only five that border the Pacific.
The province of British Columbia has the Pacific Ocean for its coast.
the countries that border Nicaragua are Honduras and Costa Rica
El Salvador is the only country in Central America that has only a Pacific Coast. To its east, Belize similarly has only a Caribbean coast.