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  2. ZIP Code - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code

    A ZIP Code (an acronym for Zone Improvement Plan[1]) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels more efficiently and quickly [2] (zipping along) when senders use the code in the postal address. Introduced on July 1, 1963, the basic format comprised five ...

  3. This Is What Your ZIP Code Actually Means - AOL

    www.aol.com/zip-code-actually-means-235400396.html

    Learn the history and meaning of usps postal codes, why it's called a ZIP code, whether a postal code is a ZIP code, and what ZIP code numbers stand for. ... acting as the primary initial ...

  4. Metropolitan statistical area - Wikipedia

    en.wikipedia.org/wiki/Metropolitan_statistical_area

    The statistical criteria for a standard metropolitan area were defined in 1949 and redefined as a metropolitan statistical area in 1983. [3] Due to suburbanization, the typical metropolitan area is polycentric rather than being centered around a large historic core city such as New York City or Chicago. [4]

  5. List of United States cities by population density - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    The skyscrapers of Center City, Philadelphia, the downtown part of the city, from the South Street Bridge. New York City, Chicago, and Philadelphia are the only incorporated places in the United States that have a population over 1,000,000 and a population density over 10,000 people per square mile. Population.

  6. 10 Hottest ZIP Codes To Buy Real Estate in America - AOL

    www.aol.com/finance/10-hottest-zip-codes-buy...

    Mount Laurel, New Jersey (08054) Metro area: Philadelphia-Camden-Wilmington, Pennsylvania-New Jersey-Delaware-Maryland. Viewers per property compared to U.S. average: 3.3. Median days on market ...

  7. List of core-based statistical areas - Wikipedia

    en.wikipedia.org/wiki/List_of_core-based...

    The United States Office of Management and Budget (OMB) has defined 925 core-based statistical areas (CBSAs) for the United States and 10 for Puerto Rico. [1] The OMB defines a core-based statistical area as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and ...

  8. Richest and Poorest ZIP Codes in America - AOL

    www.aol.com/richest-poorest-zip-codes-america...

    Here are the richest and poorest ZIP codes in America right now. 10 Richest ZIP Codes 60932 (East Lynn, Illinois) Median household income: $210,811. Mean household income: $162,707.

  9. ZIP Code Tabulation Area - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area

    ZIP Code Tabulation Areas (ZCTAs) are statistical entities developed by the United States Census Bureau for tabulating summary statistics. These were introduced with the Census 2000 and continued with the 2010 Census and 5 year American Community Survey [1] datasets. This new entity was developed to overcome the difficulties in precisely ...