US ZIP Code 91331 Nativity & Citizenship Status (2024)

Approximately 43.2% of residents in US ZIP Code 91331 were born outside the United States.

The vast majority of residents, roughly 77.4%, are U.S. citizens (including both native-born and naturalized citizens).

Place of birth and citizenship status analysis for US ZIP Code 91331

Demographics Overview

56.8%

43.2%

20.5%

77.4%

**Table 1:** Comparison of total population and nativity percentages over time.
Year	Total Pop	Foreign Born	Native Born
2024	97,608	43.2%	56.8%
2023	98,820	42.3%	57.7%
2022	99,804	42.7%	57.3%
2021	102,553	43.2%	56.8%

Approximately 43.2% of residents in US ZIP Code 91331 were born outside the United States.

The vast majority of residents, roughly 77.4%, are U.S. citizens (including both native-born and naturalized citizens).