Andy Woodruff
Geography 353: Cartography and Visualization

Dot Density Maps

The Dot Density maps show the approximate distribution of population for each census year. The dots do not represent the exact locations of people, but rather are placed randomly within each county, hence the apparent shifts within the counties from year to year. I don't expect anyone to be able to actually count the dots on these maps, since they do not appear sharply, but the maps provide a general sense of the population distribution in Ohio.

(If the animation stops, refresh the page)	One dot = 3,000 people 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.

Adams Allen Ashland Ashtabula Athens Auglaize Belmont Brown Butler Carroll Champaign Clark Clermont Clinton Columbiana Coshocton Crawford Cuyahoga Darke Defiance Delaware Erie Fairfield Fayette Franklin Fulton Gallia Geauga Greene Guernsey Hamilton Hancock Hardin Harrison Henry Highland Hocking Holmes Huron Jackson Jefferson Knox Lake Lawrence Licking Logan Lorain Lucas Madison Mahoning Marion Medina Meigs Mercer Miami Monroe Montgomery Morgan Morrow Muskingum Noble Ottawa Paulding Perry Pickaway Pike Portage Preble Putnam Richland Ross Sandusky Scioto Seneca Shelby Stark Summit Trumbull Tuscarawas Union Van Wert Vinton Warren Washington Wayne Williams Wood Wyandot

 

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

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