US ZIP Code 18603 Nativity & Citizenship Status (2024)

Approximately 3.9% of residents in US ZIP Code 18603 were born outside the United States.

The vast majority of residents, roughly 99.2%, are U.S. citizens (including both native-born and naturalized citizens).

Place of birth and citizenship status analysis for US ZIP Code 18603

Demographics Overview

96.1%

3.9%

3.1%

99.2%

**Table 1:** Comparison of total population and nativity percentages over time.
Year	Total Pop	Foreign Born	Native Born
2024	18,827	3.9%	96.1%
2023	18,985	2.6%	97.4%
2022	19,147	2.0%	98.0%
2021	19,524	2.1%	97.9%

Approximately 3.9% of residents in US ZIP Code 18603 were born outside the United States.

The vast majority of residents, roughly 99.2%, are U.S. citizens (including both native-born and naturalized citizens).