Costa Rica does not participate in Daylight Savings Time nor does Costa Rica have different time zones. It stays put in UTC -6 Central Standard Time.
A little history; In 1784, Benjamin Franklin started Daylight Savings Time but it was a drawn out debate and was not fully implemented until 1916. However, Costa Rica no longer participates in Daylight Savings Time changes. This changed in 1992. Until then the country followed the standard “spring ahead” and “fall back” strategy.
There is only a single area code for the whole country (506).