DEDelaware History

Delaware at a historical glance

Delaware was admitted to the Union on 1787, making it the 1st state. As one of the original 13 colonies, Delaware was a founding member of the United States. Its capital Dover has been the seat of state government for most of the state's history. The state's history reflects waves of migration, conflict, and adaptation — from Indigenous civilizations through European colonization, statehood, the Civil War era, industrialization, civil rights, and the modern era.

Native peoples (pre-1500s)

For at least 10,000 years before European contact, Indigenous peoples lived across what is now Delaware. Multiple distinct cultures developed in response to the region's geography — coastal peoples, plains peoples, river-valley peoples, mountain peoples — each with their own languages, governance, trade networks, religious practices, and agricultural traditions. Major Native nations in the region developed sophisticated political structures, sometimes spanning territory larger than entire modern states.

European colonization disrupted these civilizations dramatically. Disease (particularly smallpox, to which Native peoples had no immunity) wiped out an estimated 70-90% of Indigenous populations within 100 years of European arrival. Forced displacement, broken treaties, and the Indian Removal Act of 1830 further reshaped Native presence in the region. Today, Delaware's Native heritage is preserved in place names (cities, rivers, counties), tribal nations within state borders, ongoing cultural practices, and an active sovereignty movement.

Colonial era and Revolution

As one of the 13 original colonies, Delaware was central to the founding of the United States. British colonization of the region began in the 17th century. By the 1770s, colonial assemblies were resisting British taxation policies — the Stamp Act, the Townshend Acts, the Tea Act — and Delaware sent delegates to the Continental Congress that declared independence on July 4, 1776.

Delaware fought in the Revolutionary War (1775-1783) alongside the other 12 colonies and ratified the US Constitution between 1787 and 1790, depending on the specific date. The state's role in the American Revolution is commemorated through battlefields, historic sites, and museums throughout the state.

The 19th century in Delaware

The 19th century was a period of dramatic change for Delaware. Westward expansion, industrialization, immigration waves, railroad construction, the Civil War, Reconstruction, and the closing of the American frontier all shaped the state's development. Population grew steadily — sometimes through internal migration, sometimes through international immigration. The agrarian economy gave way (in many states) to industrial and urban economies. State governments expanded their roles: public education systems, infrastructure, public health, and (eventually) regulation of business all emerged in this era.

The 20th century

The 20th century brought two World Wars, the Great Depression, the New Deal, the Civil Rights Movement, the Cold War, the Space Race, the women's rights movement, and the rise of mass consumer culture. Delaware participated in all of these in ways shaped by its local geography, demographics, and economy. Military bases, defense industries, federal investment in infrastructure (Interstate Highway System, dams, airports), and the GI Bill (which subsidized college education for veterans) all reshaped the state in the postwar era.

The modern era and demographics today

Today Delaware has a population of 1 to 5 million and is one of the smallest states. The capital is Dover; the largest city is Wilmington. Political alignment has shifted over time and currently leans reliably Democratic.

Historical sites and museums

Delaware preserves its history through state parks, national monuments, historic districts, museums, and battlefields. The state historical society maintains records and offers educational programs. For a complete list of historic sites, visit the state's official tourism site or the National Park Service.

Delaware notable firsts

• First state to ratify the US Constitution (December 7, 1787)
• One of the 13 original colonies

Delaware vs similar states

How does Delaware compare with 3 other states in the same region and size category?

State	Capital	Pop	Area rank	Admitted
Delaware	Dover	1 to 5 million	#49	1787
Connecticut	Hartford	1 to 5 million	#48	1788
Maine	Augusta	1 to 5 million	#39	1820
Maryland	Annapolis	5 to 10 million	#42	1788

Bordering states (3)

Delaware shares borders with 3 other US states, listed alphabetically below. Each link goes to the dedicated state page.

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