How big is Anglesey?

Anglesey covers 275 square miles (712 km²), including Holy Island. It is the largest island in Wales, about a quarter bigger than the Isle of Man and nearly twice the size of the Isle of Wight.

square miles: 275
km²: 712
acres: 175,952
football fields: 133,064

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Map: <a href="https://how-big-is.com/anglesey/">How big is Anglesey?</a> by how-big-is.com. Outline: © OpenStreetMap contributors.</p>

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Two islands, one county

Holyhead, Anglesey's biggest town, is on Holy Island, just off the west coast across the Cymyran Strait. The Stanley Embankment and Four Mile Bridge join the two.

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How it compares

≈ 1×about the same size as the Little Giant Fire
175,952acres
133,064American football fields
99,727soccer pitches
209×the size of Central Park
1,448×the size of Vatican City
7.9%of the area of Yellowstone National Park
1.4×the size of Lake Tahoe
0.033%of the area of Greenland
1.2×the size of the Isle of Man

Questions people ask

How many square miles is Anglesey?

275 square miles (712 km²), including Holy Island.

Is Anglesey bigger than the Isle of Man?

Yes, about a quarter bigger. The Isle of Man is about 221 square miles (572 km²).

Is Anglesey bigger than the Isle of Wight?

Yes, nearly twice the size. The Isle of Wight is about 150 square miles (380 km²).

Is Holyhead on Anglesey?

Holyhead is on Holy Island, just off Anglesey's west coast. Both islands make up the county of Anglesey.

Where the numbers come from

Official figure: 275 square miles, per the Office for National Statistics. Outline: © OpenStreetMap contributors (source), licence: ODbL 1.0.