Most Common Surname in Costa Rica: González

González is the most common surname in Costa Rica—shared by approximately 1 in 8 Costa Ricans (per 2021 Registro Civil estimates).

Top 5 Surnames (2021 Data)

1. González — ~12.5%
2. Rodríguez — ~9%
3. Hernández — ~7%
4. López — ~6%
5. Gómez — ~5%

Why So Common?

• Patronymic origin: Gonzalo (Visigothic name) + -ez ("son of") = "son of Gonzalo"
• Spanish colonial settlement: Early conquistadors/settlers named González established large families
• Concentration in Central Valley: San José, Alajuela, Heredia, Cartago — population core

Costa Rican Naming Customs

• Double surname: Paternal + Maternal (e.g., González Rodríguez)
• Women retain birth surnames upon marriage (no automatic change)
• Children: Father's paternal + Mother's paternal (e.g., González López)

Regional Variation

• Guanacaste: More Hernández, Pérez (Nicaraguan influence)
• Limón: English/Creole surnames (Williams, Campbell, Smith) — Jamaican diaspora
• South Pacific: Indigenous (Boruca, Bribri) names persist

Fun fact: "González" is also #1 in Spain, Chile, Argentina, Paraguay, Venezuela, and top 5 in Mexico, Colombia, US Hispanics.