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

Graduated Symbol Maps

The Graduated Symbol maps show the total population for each county in each census year. The populations are divided into classes, each of which is represented by a different-sized circle.

(If the animation stops, refresh the page)
Population
9,420 to 22,000
22,001 to 30,000
30,001 to 50,000
50,001 to 150,000
150,001 to 400,000
400,001 to 1,721,300
Detailed county data and a reference map of Ohio counties and major cities appears below.
Click here to see a more slowly animated version (opens a new window), or choose a static map from 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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Ohio Wesleyan University