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

NOTE: Gray indicates insufficient data or a suppressed estimate.

Zip codes in the northwestern portions of the metro—particularly around Santa Clarita and the western San Fernando Valley—consistently display U.S. citizenship rates above 90%, while a pronounced low-citizenship corridor runs from Downtown LA southward through South Los Angeles and into Santa Ana, where rates frequently drop below 80%. The eastern San Gabriel Valley and central Orange County areas like Garden Grove and Anaheim also form a notable cluster of lower citizenship percentages, contrasting sharply with adjacent high-rate zones in the far northeast and along the Palos Verdes coastal areas. A striking outlier appears on the far eastern edge of the metro, where at least one zip code reaches near-100% citizenship rates, likely corresponding to a less urbanized or institutionally distinct area.

Data: U.S. Census Bureau, 2023 ACS

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