Delaware County Maps: Interactive History & Complete List

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County Map of Delaware
Map of Delaware county boundaries and county seats.

Maps of Delaware are an invaluable piece of ancestral and family history research, especially if you live far from where your ancestor was living.

Due to the fact that Delaware’s political boundaries have often changed over the years, historic maps are crucial in assisting you find out the specific location of your ancestor’s hometown, exactly what land they owned, just who their neighbors happen to be, and a lot more besides.

Maps of Delaware are an excellent tool for starting out with your research because they give important information and facts right away and present them in an easily understandable format.

Delaware’s 10 largest cities are Wilmington, Dover, Newark, Middletown, Smyrna, Milford, Seaford, Georgetown, Elsmere, and New Castle.

Learn more historical facts about Delaware counties here.

Interactive Map of Delaware County Formation History

AniMap Plus 3.0, with the permission of the Goldbug Company

List of Every Delaware County

New Castle County

Established in 1673, New Castle County is the northernmost and most populous county in Delaware with a population of around 559,000. It is home to the state’s largest city, Wilmington, and is known for its historic sites and landmarks.

Kent County

Founded in 1680, Kent County is located in the central part of Delaware and has approximately 179,000 residents. Its largest city is Dover, which also serves as the state capital.

Sussex County

Sussex County was established in 1683 and is the southernmost county in Delaware with a population of around 230,000. It is famous for its beaches, including Rehoboth Beach and Bethany Beach, and is a popular tourist destination.

Old Antique Atlases & Maps of Delaware

Disclaimer: All Delaware maps are free to use for your own genealogical purposes and may not be reproduced for resale or distribution.

Source: David Rumsey Historical Map Collection

  • 1795 Delaware Map

    Map of Delaware – 1795

    1795 Delaware Map

  • 1804 Delaware Atlas Map

    Map of Delaware – 1804

    1804 Delaware Atlas Map

  • 1814 Atlas Map of Delaware

    Map of Delaware – 1814

    1814 Atlas Map of Delaware

  • 1822 Geographical, Historical, And Statistical Atlas Map Of Delaware

    Map of Delaware – 1822

    1822 Geographical, Historical, And Statistical Atlas Map Of Delaware

  • 1827 Map of Pennsylvania, New Jersey, and Delaware

    Map of Delaware – 1827

    1827 Map of Pennsylvania, New Jersey, and Delaware

  • 1836 Atlas Map Of Maryland and Delaware with their Canals, Roads & Distances(with) Baltimore

    Map of Delaware – 1836

    1836 Atlas Map Of Maryland and Delaware with their Canals, Roads & Distances(with) Baltimore

  • 1845 Maryland and Delaware (with) District of Columbia. Atlas Map

    Map of Delaware – 1845

    1845 Maryland and Delaware (with) District of Columbia. Atlas Map

  • 1856 Delaware And Maryland. (with) District of Columbia. Atlas Map

    Map of Delaware – 1856

    1856 Delaware And Maryland. (with) District of Columbia. Atlas Map

  • 1880 County map of New Jersey. County map of Maryland and Delaware

    Map of Delaware – 1880

    1880 County map of New Jersey. County map of Maryland and Delaware

Delaware Map Links

Caleb Pike
About the author

Caleb Pike is an avid hiker and nature lover, with a passion for exploring the great outdoors. He's a writer, photographer, and adventurer, always seeking new trails to blaze and peaks to conquer.