My oath; salvation
Isia is a rare diminutive form of names like Isabella or Elizabeth, or potentially a feminine variant of Isaiah. In its connection to Elizabeth, it carries the Hebrew meaning of 'God is my oath,' while its similarity to Isaiah links it to 'salvation of the Lord.'
Less common today
Isia isn't in the latest US Top 1000. It last peaked at #9,845 in 2025.
US births per 5-year period, 1990–present (SSA data).
