Delaware Bay Map
Delaware Bay is a bay of about 2,030 km² (785 sq mi), bordered by the United States, New Jersey and Delaware. This map shows Delaware Bay highlighted in blue on shaded relief, with the surrounding coasts, rivers, borders and major cities.

How to read this map
Delaware Bay covers about 2,030 km² (785 sq mi). Countries with a coast on Delaware Bay: the United States, New Jersey and Delaware.
The blue outline marks Delaware Bay as mapped by Natural Earth. Towns and cities on the map include Philadelphia, Baltimore, Trenton, York, Lancaster, Wilmington, Annapolis and Atlantic City. Labeled states and countries: Delaware.
Greens show lower elevations; tan and brown show higher land, with pale tones toward the highest terrain. Shadows emphasize the slopes, and vertical relief is exaggerated so landforms are easier to read. Dashed lines show country borders, and fine dashed lines show state or province borders.
The relief uses Terrain Tiles (SRTM, GMTED2010 and ETOPO1 elevation data). Rivers, lakes, borders and the outline of Delaware Bay come from Natural Earth, and the figures on this page from Wikidata. Natural Earth draws features at a small scale, so the outline is a guide to where Delaware Bay is, not a surveyed boundary.
Blank physical map
The blank version keeps the mapped features and removes the place labels. Download it for a geography worksheet or practice identifying the features.

Delaware Bay facts
| Fact | Value |
|---|---|
| Area | 2,030 km² (785 sq mi) |
| Mouth | the Atlantic Ocean |
| Coastal countries | the United States, New Jersey and Delaware |
Data sources and license
- Natural Earth (public-domain geography): Public domain.
- Terrain Tiles / Mapzen (SRTM, GMTED2010, ETOPO1): Open elevation data; source attribution retained.
- Wikidata (lengths, areas, countries and other facts): CC0 1.0.
Map design and rendered images: Atlas of Maps, CC BY 4.0. Source databases retain their own licenses; the map license does not replace them.
Maps of the coastal countries: United States. Compare with the map of the five oceans.
Frequently asked questions
How big is Delaware Bay?
Delaware Bay covers about 2,030 km² (785 sq mi).
Which countries border Delaware Bay?
the United States, New Jersey and Delaware.
Can I download a blank map of Delaware Bay?
Yes. The blank version keeps the relief, rivers and borders and the highlighted sea but removes the place names. Both versions are free to download as PNG and as an A4 PDF.
Use this map
You can download, print and share this map for free, in class, in school projects, in presentations and on websites, as long as you credit the source: Delaware Bay Map · Atlas of Maps (atlasofmaps.com), license CC BY 4.0.
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