US ZIP Code 91304 Nativity & Citizenship Status (2024)

Approximately 37.4% of residents in US ZIP Code 91304 were born outside the United States.

The vast majority of residents, roughly 84.2%, are U.S. citizens (including both native-born and naturalized citizens).

Place of birth and citizenship status analysis for US ZIP Code 91304

Demographics Overview

62.6%

37.4%

21.6%

84.2%

**Table 1:** Comparison of total population and nativity percentages over time.
Year	Total Pop	Foreign Born	Native Born
2024	52,474	37.4%	62.6%
2023	53,794	37.8%	62.2%
2022	54,369	37.0%	63.0%
2021	54,264	37.1%	62.9%

Approximately 37.4% of residents in US ZIP Code 91304 were born outside the United States.

The vast majority of residents, roughly 84.2%, are U.S. citizens (including both native-born and naturalized citizens).