Two triangles, red (upper left) and green (lower right), crossed by two diagonal joined strips white (lefter) and blue (righter). In the center, a ten-pointed golden star with the cypher "1848" in black characters.
Three horizontal strips light blue (upper and lower) and white (central), with the coat of arms in the center.
First flag of the State of Costa Rica (within the United Provinces of Central America)
Same as UPCA flag, with the State Seal in the lower strip.
Second flag of the State of Costa Rica (within the United Provinces of Central America)
Three horizontal strips white, blue and white, with the State Seal in blue strip.
Third flag of the State of Costa Rica (within the United Provinces of Central America)
Three horizontal strips blue, white and b.ue, with the State Seal in white strip.
First flag after break of UPCA
Same as actual flag, with the National Coat of Arms in the center.
State flag from 1906 to 1964
The number of stars appeared on Coat of Arms was 5 since 1848. In 1906 the style of Coat of Arms was slightly modified, and the one appeared on State Flag was also modified, narrowed and was put into a white oval lied near to the hoist of the flag.
State flag from 1964 to 1998
In 1964 a law was passed by government to reduce the numbers of the stars from 5 to 7, to reflect the increase of number of its provinces. In 1998 a decree was passed by government about the design of National Coat of Arms, and according to the decree there should be some smoke ejecting from three volcanoes as current look.