Skip Header


Component ID: #ti394933107

Basic Information

2010 Census Population: 3,751,351 (28th)
Land Area: 68,594.2 square miles (19th)
Density: 54.7 persons per square mile (35th)
Capital: Oklahoma City
Became a State: November 16, 1907 (46th)
Bordering States: Arkansas, Colorado, Kansas, Missouri, New Mexico, Texas
Abbreviation: OK
ANSI Code: 40

Component ID: #ti1573596772


The United States acquired the area of Oklahoma from France as part of the Louisiana Purchase in 1803. Part of present-day Oklahoma, which had been included in Arkansas Territory, was ceded to Spain by conclusion of a treaty in 1819; the ceded area was reacquired as part of the annexation of Texas in 1845. The area of Oklahoma was part of unorganized territory designated as Indian Country or Indian Territory on June 20, 1834, although this conflicted with territory already included within Missouri Territory. Oklahoma Territory was organized on May 2, 1890, from the western part of Indian Territory and the Public Land Strip (the panhandle, which was sold to the United States by Texas), and resulted in the territory being in two pieces. The territory was enlarged with the addition of the Cherokee Outlet, which joined Oklahoma Territory into a single area. The Supreme Court affirmed the claim of Oklahoma to the Greer County area in southwest Oklahoma in 1896. Oklahoma Territory and the remaining Indian Territory were combined, and Oklahoma was admitted to the Union on November 16, 1907, as the 46th state, with generally the same boundary as the present state. A boundary dispute with Texas was settled in 1930, deleting a narrow strip of territory from Oklahoma.

Census data are available for Oklahoma beginning with the 1890 census. The 1890 and 1900 census populations reported for Oklahoma include the population for Indian Territory. The population of Oklahoma Territory as legally established was 398,331 in 1900 and 78,475 in 1890. The population of Indian Territory as legally established was 392,060 in 1900 and 180,182 in 1890. The Census Bureau conducted a special census of the Oklahoma and Indian territories on July 7, 1907. The population of the entire area was 1,414,177.

Data for the legally established state of Oklahoma are available beginning with the 1910 census.

Component ID: #ti1573596773

About the Geographic Areas


Oklahoma has 1 federally recognized American Indian area reservation, 25 Oklahoma tribal statistical areas (OTSAs), and 4 joint-use OTSAs.  The OTSAs represent the former reservations.


Oklahoma has 4 metropolitan statistical areas, 18 micropolitan statistical areas, and 2 combined statistical areas.


There are 77 counties in Oklahoma.  All counties are functioning governments, each governed by a board of county commissioners.


There are 305 county subdivisions in Oklahoma. They are all census county divisions (CCDs), which are delineated for statistical purposes, have no legal function, and are not governmental units.  CCDs were first established for the 1970 census.  Prior to 1970, the minor civil divisions used in the census include townships (most of which were non-functioning, administrative areas) and election precincts.


Oklahoma has 733 places, 597 incorporated places and 136 census designated places (CDPs).  The incorporated places consist of 164 cities and 433 towns.  There are four inactive towns - Erin Springs, New Woodville, Oak Grove, and Smithville.  Cities have a minimum population of 1,000 and villages have a population less than 1,000. 


Oklahoma has 1,046 census tracts, 2,965 block groups, and 269,118 census blocks.


For the 111th Congress (January 2009-January 2011), Oklahoma had five congressional districts.  For the 113th Congress (January 2013-January 2015), Oklahoma continues to have five congressional districts as a result of reapportionment based on the 2010 Census.


Oklahoma has 106 elementary school districts and 426 unified school districts.


There are 48 state senate districts and 101 state house districts in Oklahoma.


Oklahoma has 86 urban areas; 5 urbanized areas and 81 urban clusters.


There are 649 ZIP Code tabulation areas (ZCTAs) in Oklahoma. 

Component ID: #ti1573596774

Centers of Population

Year North Latitude West Longitude
20106 35° 35′ 54″ 96° 50′ 12″
20006 35° 35′ 53″ 96° 50′ 05″
19905 35° 35′ 22″ 96° 51′ 53″
19804 35° 35′ 17″ 96° 53′ 15″
19703 35° 35′ 02″ 96° 56′ 20″
19603 35° 35′ 07″ 96° 53′ 08″
19503 35° 33′ 54″ 96° 55′ 42″
19402 35° 29′ 53″ 96° 52′ 32″
19302 35° 30′ 40″ 96° 58′ 53″
19201 35° 28′ 33″ 96° 52′ 48″
19101 35° 28′ 19″ 97° 05′ 28″
19001 35° 30′ 25″ 96° 57′ 32″
18901 35° 18′ 58″ 96° 28′ 01″
18801 not available not available

1  Source:  U.S. Department of Commerce, Bureau of the Census, Fourteenth Census of the United States, 1923
2  Source:  U.S. Census Bureau, recomputation for historical county level data which relied upon aggregate county level population data with an estimated county centroid resulting in a possible error of up to one mile.
3  Source:  U.S. Department of Commerce, Bureau of the Census, Centers of Population for States and Counties, 1974
4  Source:  U.S. Census Bureau, Geography Division, recomputation from archived national block group/enumeration area data resulting in a possible error of up to 1,000 feet.
5  Source:  U.S. Census Bureau, Geography Division, recomputation from archived national block group data resulting in a possible error of up to 1,000 feet.
6  Source:  U.S. Census Bureau, computation from national block-level data

Component ID: #ti1573596775

Most Populous, Largest, and Dense Areas

Population Land Area
(square miles)
Population Density
(Persons per square mile)

Name Population Name Area Name Density
County Oklahoma County 718,633 Osage County 2,246.36 Tulsa County 1,058.1

 - Inc Place Oklahoma City city 579,999 Oklahoma City city 606.41 Sportsman Acres town 3,910.0
 - CDP Park Hill CDP 3,909 Kenwood CDP 45.06 Turley CDP 760.3

List of Entities

See the Gazetteer Files for a list of geographic entities. See the Metropolitan and Micropolitan Statistical Areas page for a list of metropolitan and micropolitan statistical areas and related statistical areas.

Download This Information

  Is this page helpful?
Thumbs Up Image Yes    Thumbs Down Image No
Comments or suggestions?
No, thanks
255 characters remaining
Thank you for your feedback.
Comments or suggestions?
Back to Header