U.S. Citizens (% of Population Over 18) by Zip Code (ZCTA5) — San Antonio Metro

NOTE: Gray indicates insufficient data or a suppressed estimate.

Zip codes in the urban core of San Antonio, particularly south and west of downtown near Von Ormy, display notably lower U.S. citizenship rates among the adult population, falling into the 75–85% range, while peripheral and suburban areas to the north, east, and southeast consistently exceed 90–95%. The highest citizenship percentages cluster in the outer suburban and rural zip codes, including areas near New Braunfels and the far northwest, where rates approach or reach 100%. This core-to-periphery gradient likely reflects the concentration of immigrant communities in central and south-side neighborhoods, contrasting sharply with the predominantly native-born populations in newer suburban developments.

Data: U.S. Census Bureau, 2023 ACS

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