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In the city import process, census-designated places were included, which are not real cities; but just like actual cities, they were added with boundary=administrative and admin_level=8. They're just areas drawn arbitrarily for the Census for statistical purposes.

There seems to be agreement on talk-us that these shouldn't be tagged with boundary=administrative at all.

Clues that indicate a boundary might be a CDP is that it primarily follows roadway centerlines, and doesn't reflect well the actual boundaries of a community; that is, it might strangely omit houses on one side of the road, or it might include large chunks of farmland. One way to identify a CDP with certainty in Ohio is in its relation's tagging. The tiger:NAMELSAD=* tag will have the CDP's name with "CDP" added to the end. Wikipedia will also have an article on any CDP or municipality in Ohio, identifying whether or not it is a CDP. Finally, the Wikipedia article for each county in Ohio will have a section listing CDPs it contains, if any.

Since these CDPs do not relate to anything administrative, they should probably be stripped of their boundary=administrative and admin_level=8 tags.

When tagging CDP relations, use the following tags: name=(name of CDP)



is_in=USA, Ohio







source=2010 Census


CDP relations should also include the point on the map showing the center of the CDP. These points on the map should be tagged place=village if the population is under 5,000, place=town if the population is between 5,000 and 50,000. There are no CDPs in Ohio requiring the tag place=city because there are no CDPs with a population larger than 50,000 in Ohio.

Places on the map tagged place=hamlet are generally too small and insignificant to be counted as CDPs.

Counties with CDPs
County All CDPs drawn, tags removed? Notes
Adams County no Bentonville needs drawn out
Ashland County no Cinnamon Lake needs drawn out
Ashtabula County no Austinburg and Edgewood need drawn out
Athens County partial Millfield and New Marshfield need drawn out
Belmont County yes
Butler County yes*
Carroll County yes
Clark County yes
Clermont County yes
Columbiana County partial Lake Tomahawk, Negley, East Rochester, Damascus, and Homeworth need drawn out
Erie County yes
Fairfield County yes
Franklin County yes
Geauga County yes
Greene County yes
Hamilton County yes
Lake County yes
Lawrence County yes
Licking County yes
Lorain County yes
Madison County yes
Mahoning County yes
Montgomery County yes
Muskingum County yes
Pickaway County yes
Portage County yes
Ross County yes
Sandusky County yes
Scioto County yes
Stark County yes
Summit County yes
Trumbull County yes
Tuscarawas County no Dundee and Sandyville need drawn
Warren County yes
Washington County yes
Wayne County no Kidron, New Pittsburg, and Sterling need drawn out

Counties without CDPs: Allen, Auglaize, Brown, Champaign, Clinton, Coshocton, Crawford, Cuyahoga, Darke, Defiance, Delaware, Fayette, Fulton, Gallia, Guernsey, Hancock, Hardin, Harrison, Henry, Highland, Hocking, Holmes, Huron, Jackson, Jefferson, Knox, Logan, Lucas, Marion, Medina, Meigs, Mercer, Miami, Monroe, Morgan, Morrow, Noble, Ottawa, Paulding, Perry, Pike, Preble, Putnam, Richland, Seneca, Shelby, Union, Van Wert, Vinton, Williams, Wood, Wyandot


  • *The CDP of South Middletown, in Butler County, seems to be missing.