When was alaska purchased

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Last updated: April 17, 2026

Quick Answer: Alaska was purchased by the United States from Russia on March 30, 1867, for $7.2 million. This acquisition, known as the Alaska Purchase, added 586,412 square miles of territory to the U.S.

Key Facts

Overview

The Alaska Purchase was a landmark land acquisition in which the United States bought Alaska from the Russian Empire. Completed in 1867, this deal significantly expanded American territory in North America and laid the foundation for future economic and strategic interests in the Arctic and Pacific regions.

The purchase was initially mocked as "Seward's Folly" due to skepticism about the value of the icy, remote land. However, later discoveries of gold and oil proved its immense worth. Today, Alaska is recognized as a critical state for natural resources, military positioning, and biodiversity.

How It Works

The Alaska Purchase involved diplomatic negotiations, financial transaction, and formal transfer of sovereignty—all executed under international treaty protocols of the 19th century. The process reflected broader U.S. expansionist policies and growing global influence.

Comparison at a Glance

Below is a comparison of major U.S. territorial acquisitions, highlighting the Alaska Purchase in context of size, cost, and historical significance.

AcquisitionYearSize (sq mi)Cost ($)Cost per Acre
Louisiana Purchase1803828,00015,000,0003 cents
Alaska Purchase1867586,4127,200,0002 cents
Gadsden Purchase185329,67010,000,00070 cents
Florida Purchase181959,0005,000,00014 cents
Hawaiian Annexation18986,42300

This table illustrates that the Alaska Purchase was one of the most cost-effective land deals in U.S. history. Despite its high initial price tag, the per-acre cost was extremely low, especially compared to other acquisitions like the Gadsden Purchase. Over time, Alaska’s vast natural resources—gold, oil, timber, and fisheries—have generated trillions in economic value.

Why It Matters

The Alaska Purchase had long-term strategic, economic, and geopolitical consequences that reshaped American development in the 20th century. Initially dismissed, it later proved to be one of the most valuable land investments in U.S. history.

Today, the Alaska Purchase is celebrated as a visionary decision that expanded American influence into the North Pacific and Arctic zones. Its legacy endures in energy, defense, and environmental stewardship.

Sources

  1. WikipediaCC-BY-SA-4.0

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