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                        Bring your classroom to life with real world data.  Select an activity that supplements what you are currently teaching in subjects including English, Math, Geography and History.

                    

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                        Statistics in Schools is a free Census Bureau program that uses the data to create resources for K-12 students in a variety of subjects.

                    

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    Activities
                
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                Activities
                    
                        Resources
                    
                        Standards
                    
                        About

                  
                
                    Activities Overview
                        
                            Math
                        
                            History/Social Studies
                        
                            Geography
                        
                            Sociology
                        
                            English
                        
                            Home and Distance Learning Activities
                        
                            Grades K - 2
                        
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                    Apportionment Resources
                        
                            Constitution Day
                        
                            Data Access Tools
                        
                            Fun Facts
                        
                            Games
                        
                            Historical Documents and Images
                        
                            Kahoot! Games
                        
                            Learn About the Decennial Census
                        
                            Maps
                        
                            Monthly Highlights
                        
                            Videos
                        
                            Visualizations
                        
                            Warm-Up Activities
                
                    Overview
                        
                            Math
                        
                            History
                        
                            Geography
                        
                            Sociology
                        
                            English
                
                    About Us
                        
                            Program Benefits
                        
                            Census 101 for Students
                        
                            Teacher's Guide to Tools
                        
                            Newsroom
                        
                            Partner with SIS
                        
                            Contact Us
 
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            Before and After 1940: Change in Population Density
 Before and After 1940: Change in Population Density
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		VisualizationsWithin Statistics in Schools (SIS) Resources

			Within Statistics in Schools (SIS) Resources
				
					Data Access Tools
				
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					Visualizations
 Before and After 1940: Change in Population Density
 September 22, 2023
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 This interactive data visualization includes three maps. The maps illustrate the increase and decrease in population density in the United States over three decades: 1920-1930, 1930-1940, and 1940-1950.  The legends on each map represent the change in population density for counties (people per square mile). Taken together, the three population density maps illustrate the changes in geographic mobility during the featured decades.
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				Before and After 1940: Changes in Population Density
 
 
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