From 1860 to 1920, the population of New York City was overwhelming large. From 813,000 in 1860, the city had a population in 1920 of 7.9 million.
New Orleans, Louisiana had surpassed 200,000 in population by 1860, becoming the most populous city in the southern United States at that time.
In 1920, New York City had the largest African American population among all cities in the United States.
This is called a population increase.
Charleston, South Carolina
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Some major events in New York City from 1900-1920 include the construction of the New York City subway system (1904), the opening of the Woolworth Building (1913), the Triangle Shirtwaist Factory fire (1911), and Prohibition taking effect (1920).
In 1860, New York City was the largest city in the United States.
According to Wikipedia, the population of New York City in 1860 was 1,174,779 people. Please see the links for details.
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The population of the city is rapidly growing due to an increase in job opportunities.
This defines a rapid population increase.
The population of Tracy, CA is approximately 80,000 people. The city has seem a 39.2% increase in population since 2000. However it is still a relatively small city.