The small landowners' relative poverty, the lack of a large indigenous labor force, the population's ethnic and linguistic homogeneity, and Costa Rica's isolation from the Spanish colonial centers in Mexico and the Andes all contributed to the development of an autonomous and individualistic agrarian society. An egalitarian tradition also arose. This tradition survived the widened class distinctions brought on by the 19th-century introduction of banana and coffee cultivation and consequent accumulations of local wealth.

Costa Rica joined other Central American provinces in 1821 in a joint declaration of independence from Spain. Although the newly independent provinces formed a Federation, border disputes broke out among them, adding to the region's turbulent history and conditions. Costa Rica's northern Guanacaste Province was annexed from Nicaragua in one such regional dispute. In 1838, long after the Central American Federation ceased to function in practice, Costa Rica formally withdrew and proclaimed itself sovereign.

An era of peaceful democracy in Costa Rica began in 1899 with elections considered the first truly free and honest ones in the country's history. This began a trend continued until today with only two lapses: in 1917-19, Federico Tinoco ruled as a dictator, and, in 1948, Jose Figueres led an armed uprising in the wake of a disputed presidential election.

With more than 2,000 dead, the 44-day civil war resulting from this uprising was the bloodiest event in 20th-century Costa Rican history, but the victorious junta drafted a constitution guaranteeing free elections with universal suffrage and the abolition of the military. Figueres became a national hero, winning the first election under the new constitution in 1953. Since then, Costa Rica has held 14 presidential elections, the latest in 2006.