Eastern United States

As of 2011, the Eastern United States had an estimated population exceeding 179 million, representing the majority (over 58 percent) of the total U.S. population.

The three most populous cities in the Eastern United States are New York City, Chicago, and Philadelphia.

Northeastern United States

According to the U.S. Census Bureau, the Northeastern United States comprises nine states, including (north to south): Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New Jersey, New York, and Pennsylvania.

The present-day Northeast is significantly smaller than the Northeastern Woodlands cultural area. The pre-Columbian Northeast had three major areas: the Coastal area, Saint Lawrence Lowlands, and Great Lakes-Riverine zones. The Coastal area includes the Atlantic Provinces of Canada and the Atlantic seaboard of the United States south to North Carolina. The Saint Lawrence Lowlands area includes parts of Southern Ontario, upstate New York, much of the Saint Lawrence River area, and the Susquehanna Valley. The Great Lakes-Riverine area includes the remaining inland areas of the Northeast, which were home to Central Algonquian and Siouan speakers. The Great Lakes region is sometimes considered a distinct cultural area due to its large concentration of Native American tribes.

New England

New England is a subregion of the northeastern U.S. that is bounded by the Atlantic Ocean, Canada, and the state of New York. It includes six states: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut.

In one of the earliest British colonial settlements in the New World, Pilgrims from England first settled in New England in 1620 at Plymouth Colony in and around present-day Plymouth, Massachusetts. In the late 18th century, the New England colonies were among the first North American British colonies to support an escalation in the American Revolution against Britain, launching the Boston Tea Party on December 16, 1773, and later firing the first shots of the American Revolutionary War in the Battles of Lexington and Concord on April 19, 1775.

New England produced the first examples of American literature and philosophy and was home to the beginnings of free and compulsory public education. In the 19th century, the region played a prominent role in the movement to abolish slavery in the United States. It was the first region of the United States to be transformed by the Industrial Revolution.

As of 2023, New England is home to two of the top ten universities in the nation, according to 2022–23 U.S. News & World Report rankings, Harvard University in Cambridge, Massachusetts (tied for third), and Massachusetts Institute of Technology in Cambridge, Massachusetts (tied for third).

Mid-Atlantic

According to the United States Census Bureau, the Middle Atlantic is a subregion of the northeastern U.S. that includes three states: New Jersey, New York, and Pennsylvania.

The Middle Atlantic region includes New York City, the largest city in the U.S. and a global center of finance and culture, and Philadelphia, the nation's sixth-largest city and first capital, where the Declaration of Independence was signed at Independence Hall in 1776, formally launching the American Revolutionary War, and later where the U.S. Constitution was drafted and ratified at Independence Hall in Philadelphia in 1789.

As of 2026, the Mid-Atlantic region is home to five of the top twenty-five universities in the nation, according to the 2026 U.S. News & World Report rankings: Princeton University in Princeton, New Jersey, Cornell University in Ithaca, New York, Columbia University in New York City, the University of Pennsylvania in Philadelphia, and Carnegie Mellon University in Pittsburgh.

East North Central States

The East North Central area, which includes Illinois, Indiana, Michigan, Ohio, and Wisconsin, can also be classified as a subregion of the Northeastern United States, as these states are in the Great Lakes-Riverine area. As one of two subregional divisions used to categorize the modern Midwest, the East North Central region closely matches the area of the Northwest Territory, excluding a portion of Minnesota. The East North Central states form a large part of the Great Lakes region, although the latter also includes Minnesota, New York, Pennsylvania and the Canadian province of Ontario.

Culturally, the East North Central region of the U.S. has been historically influenced by the British and the French; Anglo-American culture permeated states covering the region following the westward expansion of the United States. Religiously, the East North Central states have been and remain predominantly affiliated with Christianity. Altogether, the five states are majority Catholic, non- and inter-denominational, Methodist, Lutheran, and Baptist. The largest non-Christian religion has been Islam.

Chicago is the largest city in the region, followed by Columbus, Ohio and Indianapolis. Chicago has the largest metropolitan statistical area, followed by Detroit. Sault Ste. Marie, Michigan is the oldest city in the region, founded by French missionaries and explorers in 1668.

As of 2026, the East North Central area is home to two of the top ten universities in the nation, according to the 2026 edition of Best Colleges by U.S. News & World Report: the University of Chicago, which is ranked the sixth-best in the nation, and Northwestern University, which is tied for seventh-best.