
NOTE: Gray indicates insufficient data or a suppressed estimate.
Zip codes in the central Houston core and extending southwest through the Gulfton and Sharpstown corridors exhibit the lowest U.S. citizenship rates among adults, frequently falling below 80%, consistent with areas known for large immigrant communities. Outer suburban and exurban zones—particularly to the northwest near The Woodlands, the far west beyond Katy, and parts of the southern periphery near League City and Friendswood—generally report citizenship rates above 90-95%. A notable bright-yellow outlier southeast of Pearland stands out with near-100% citizenship, contrasting sharply with adjacent darker zip codes closer to Pasadena and the Houston Ship Channel area.
Data: U.S. Census Bureau, 2023 ACS
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- High School Graduate (% of Over 25) by Zip Code (ZCTA5) — Houston Metro
- Median Age by Zip Code (ZCTA5) — Houston Metro
- Population Non-Hispanic White % by Zip Code (ZCTA5) — Houston Metro
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