![]() ![]() Since 1870, when the total land area reached about three and a half million square miles, the population density has risen at the same rate as the growth in population. The fourth census was taken under the provisions of an act of March 14, 1820. ![]() Even the purchase of Alaska was not able to reverse the increase in density. gov website belongs to an official government organization in the United States. In 1820, the United States had undergone some changes in its administrative divisions. history: Map of the United States of America in 1820. An official website of the United States government Here’s how you know Here’s how you know. Free map resources for teaching and learning K-12 U.S. However, the corresponding increases in population resulted in a regular rise in the number of Americans per square mile in every decade except 18, when the aforementioned actions were taken. Tallies, percentages, and rankings of urban and rural areas in the United States, Puerto Rico, and the Island Areas. population density and distribution based on the 1790 (first), 1800 (second), 1810 (third), and 1820 (fourth) Censuses, respectively. ![]() In the first century of its existence, the United States added regularly to its store of undeveloped land through acquisitions such as the Louisiana Purchaes and conquest, which brought in a great deal of land that had formerly belonged to Mexico. 1790-1820, Mapsof the Population of the United States, which includes four maps of U.S. Population, Land Area and Density, 1790-2020 ![]()
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