Population Change in Ohio
Maps and Animation Page

Andy Woodruff
Geography 353: Cartography and Visualization
There are five types of maps:
Population Change, Main Scheme Population Change, Second Scheme Dot Density Graduated Symbols Proportional Symbols

Proportional Symbol Maps

These maps show population totals in each county as proportionally-sized circles. Each circle is a different size based on the population of the county it represents. Since the size of each circle is relative to the other circles on a given map, there is no constant scale for all eleven maps, so these maps are not animated.
Detailed county data and a reference map of Ohio counties and major cities appears below.

1900
 1910
 

1920

  

1930
 

1940

  

1950
 

1960

  

1970
 

1980

  

1990
 

2000

Ohio counties and cities reference map

Select a county from the list below to see a table and graph of its population data.
 

Also see a summary map and chart of change over the century for the whole state.

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