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Arnold, Missouri Map and Directory

 
   

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Jefferson County, Missouri locator map According to the United States Census Bureau, Arnold is a City that is located in Jefferson County, Missouri at 38.43 degrees North and 90.38 degrees West.  The city's time zone is America/Chicago, and the city's primary telephone area code is 636.  The land area of Arnold is about 11.58 square miles, whereas the water area of the city is about 0.36 square miles.  Jefferson County's land area is about 657 square miles, so the city occupies about 1.8 percent of the county's total land area.

The Census Bureau estimates that Arnold had about 21,113 residents in 2017, which is approximately 1,823 people per square mile of land area. 

According to recent American Community Survey data, Arnold had 8,204 total estimated households and the median household income was about $56,329 per year. 

The Missouri counties map at upper right shows Jefferson County, highlighted in red.  Use the menu below to display interactive maps of Arnold, either in a frame on this page or in full-screen mode. 

Use the menu below to display categorized Arnold directories. 

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