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BASIC INFORMATION
Ohio
Geographic Entities 2010 Census Census 2000 Features 2010 Census
Block Groups 9,238 9,354 Address Range-Feature Names 2,212,004
Census Blocks 365,344 277,807 Address Ranges 1,578,139
Census Tracts 2,952 2,941 Area Landmarks 3,112
Congressional Districts (108th - 112th) 18 18 Areal Water 52,8
10
Counties and Equivalents 88 88 Edges 1,963,898
County Subdivisions 1,604 1,585 Feature Names 2,089,648
Places 1,204 1,054 Linear Water 72,057
State Legislative Districts (Lower) 100 99 Point Landmarks 24,412
State Legislative Districts (Upper) 34
33 Primary and Secondary Roads 13,450
Unified School Districts 616 614 Roads 579,748
Voting Districts 11,029 N/A Topological Faces 609,678
Topological Faces-Area Hydrography 76,283
Topological Faces-Area Landmarks 7,769
2010 Census Population: 11,536,504 (7
th
)
Land Area: 40,860.69 square miles (35
th
)
Density: 282.3 persons per square mile (10
th
)
Capital: Columbus
Became a State: March 1, 1803 (17
th
)
HISTORY
The area of Ohio was part of the original territory of the United States, being part
of lands ceded by four states to the United States and designated in 1787 as the
“Territory northwest of the River Ohio.” It also included the area known a
s the
Connecticut Western Reserve, which was not ceded by Connecticut to the United
States until 1800. Ohio Territory was organized on April 30, 1802, from the
Northwest Territory, with generally the same boundary as the present state. Ohio
was admitted to the Union on February 19, 1803, as the 17
th
state. Ohio acquired
legal title to the area known as the Toledo Strip when Michigan ceded its clai
m in
1836.
Although not yet legally established as a separate entity, census data for Ohio are
available beginning with the 1800 census. The 1800 census population for
Michigan includes the population of a small area in present-day Ohio. The 1800
population of the legally established Northwest Territory (of which Ohio was a
part) was 45,916. For an explanation of the revision to the 1800 populat
ion of
Ohio, see Richard L. Forstall, Population of States and Counties of the United
States: 1790-1990, Washington, DC: U.S. Government Printing Office, 1996, page
126.
Data for the legally established state of Ohio are available beginning with the
1810 census.
Bordering States: Indiana, Kentucky, Michigan, Pennsylvania,
West Virginia
International Border: Canada
Abbreviation: OH
ANSI/FIPS Code: 39
METROPOLITAN AND MICROPOLITAN STATISTICAL AREAS AND RELATED
STATISTICAL AREAS
Ohio has 16 metropolitan statistical areas, 29 micropolitan statistical areas, and 9
combined statistical areas.
COUNTIES
There are 88 counties in Ohio. Each county is governed by a board of county
commissioners.
COUNTY SUBDIVISIONS
The
re are 1,604 county subdivisions in Ohio known as minor civil divisions
(MCDs). There are 1,324 townships which can be either functioning, but not
necessarily active governmental units, or nonfunctioning entities. Most of the
incorporated places in Ohio are legally coextensive with a township that is
nonfunctioning and generally not recognized by local officials. The Census Bureau
does not show t
hese townships in census publications in agreement with the state
government.
PLACES
Ohio has 1,204 places; 938 incorporated places and 266 census designated
places (CDPs). The incorporated places consist of 250 cities and 688 villages.
