High School Graduate (% of Over 25) by Zip Code (ZCTA5) — Maine

NOTE: Gray indicates insufficient data or a suppressed estimate.

High school graduation rates across Maine's zip codes generally fall in the 85–100% range, with the highest concentrations of near-universal attainment (yellow, 95%+) clustered in the rural interior and northern Aroostook County, as well as parts of the southern coastal and central regions. Notable pockets of lower attainment (teal/green, roughly 75–85%) appear in portions of Washington County along the eastern coast, select areas of the midcoast, and a few scattered zip codes in the northern tier near the Canadian border. The large gray/unshaded areas in the northwestern interior reflect unpopulated or data-suppressed zones typical of Maine's vast unorganized territories.

Data: U.S. Census Bureau, 2023 ACS

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