Oklahoma Population 2018

3,940,521

Oklahoma has an estimated population in 2018 of 3.94 million, up from 3.75 million at the 2010 Census. Its growth rate is currently 0.84%, which ranks 24th in the country. Over the years, its population has grown steadily to the point where it is edging toward a landmark of 4 million residents in the present day.

As with all states within the US, the nationwide Census of 2010 provides Oklahoma's last confirmed set of population figures. The census revealed that the population of Oklahoma was 3,751,351, which represented an increase of 8.7% on the figures released in 2000. The estimated 2018 population has now reached 3.94 million, which makes Oklahoma the 28th most populous state in the country.

Oklahoma Area and Population Density

The southern central state of Oklahoma is the 20th largest in the US by area and was the 46th to enter the Union. Oklahoma has a fairly low population density that keeps with its ranking in terms of size and population numbers. The total surface area measures 69,898 square miles (181,195 square kilometers) and for every square mile of Oklahoma territory, there is an average of 54.7 people per square mile. This makes Oklahoma the 35th most densely populated state in the country and 20th in terms of size.

Oklahoma has a total of 598 incorporated places, but only four cities with a population over 100,000. 65% of Oklahomans live within the Oklahoma City and Tulsa metropolitan areas, with both being two of the sixty largest cities in the country. Oklahoma City is the largest city in the state with a population of 631,346, while Tulsa follows with 403,505. In these two areas, the population density exceeds 5,000 people per square mile, while the remainder of the state is mostly under 55 people per square mile. When it comes to the most populated counties in Oklahoma, the two at the top of the list are Oklahoma county with 787,958 individuals and Tulsa county with 646,266 residents.

Oklahoma Demographics

Age/Sex, Race, and Religion

The median age of the population residing in Oklahoma is approximately 36.3 years of age. The ratio of females to males is currently around 50.5% females and 49.5% males across the population.

The racial diversity in the population of Oklahoma is currently at 72.9% Caucasian, 7.7% two or more races, 7.4% Native North American, 7.3% African American, 2.6% other races, and 2% Asian.

In terms of preferred religions across the state, the population of Oklahoma is 79% Christian based faiths, 2% non-Christian based faiths, and 18% of the population is non-affiliated with any faith.

Oklahoma Boundary, Census, and Statehood History

Oklahoma was acquired by the Louisiana Purchase of 1803. It soon became an area of settlement for various Indian tribes displaced from States farther east, and was known as the Indian Territory although it had various tribal governments rather than a central administration. Many non-Indians also settled in the area. Oklahoma Territory was established from a part of the Indian Territory in 1890 and expanded in 1893; the tribal jurisdictions continued in the remainder. On November 16, 1907 the two parts were admitted as the State of Oklahoma, with substantially the current boundaries. A dispute about the western boundary was settled in Texas' favor by the U.S. Supreme Court in 1930.

Census coverage did not systematically include any of present-day Oklahoma until 1890; some Indian areas were first enumerated in 1900. In 1860 non-Indians were enumerated but not included in official population totals; non-Indians in the area in 1870 and 1880 were not enumerated. The 1890 total is for Oklahoma Territory (78,475) and Indian Territory (180,182); and the 1900 total is for Oklahoma Territory (398,331) and Indian Territory (392,060). Just prior to statehood, the U.S. Census Bureau took a special census on July 1, 1907, showing a total population of 1,414,177 (Oklahoma Territory, 733,062; Indian Territory, 681,115); results of this special census are included in the Oklahoma table.

Oklahoma Population Chart

Oklahoma Population History

In 1890, Oklahoma had a population that stood at an already healthy 258,657, but substantial increases on those numbers were to follow. Ten years later at the beginning of the 20th century, the figure had climbed by just over 200% to 790,391 and a further significant rise took the Oklahoma population to 1,657,155 in 1910.

That pattern continued, but in the mid 1900s, censuses recorded two falls in population for 1940 and 1950. The drops were modest in terms of percentages, but they took the numbers down from 2,396,040 in 1930 to 2,233,351 twenty years later.

Since then, however, the overall trend has been one of modest growth, and the Oklahoma population in 2016 has progressed to the point where it is poised to pass the 4 million mark at the 2020 Census

Oklahoma Population Growth

The US Census of 2020 is likely to indicate further growth within Oklahoma, and it will be interesting to see whether the state can reach its next milestone of 4 million people by that time. According to state projections, Oklahoma's population will reach the milestone of 4 million by 2020, and top 5.5 million by 2075, although projections past 2050 can, at this point, be very inaccurate.

Population Data via US Census

Oklahoma Growth Rate

Oklahoma Population Rank

Year Pop % Change
20203,959,8350.24%
20193,950,1780.25%
20183,940,5210.25%
20173,930,8640.25%
20163,921,2070.43%
20153,904,3530.76%
20143,875,0080.65%
20133,849,8400.91%
20123,815,2980.79%
20113,785,2320.68%
20103,759,5290.86%
20003,450,6540.93%
19903,145,5850.39%
19803,025,2901.69%
19702,559,2290.95%
19602,328,2840.42%
19502,233,351-0.45%
19402,336,434-0.25%
19302,396,0401.68%
19202,028,2832.04%
19101,657,1557.68%
1900790,39111.82%
1890258,6570.00%

Oklahoma Facts

Oklahoma Population in 2018Source: By Larry Smith [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

  • Almost one-quarter) of Oklahoma residents are under the age of 18.
  • A French trading post in Salina in Mayes County was the first permanent white settlement back in 1769.
  • Oklahoma has one of the largest American Indian populations in the country.
  • Oklahoma was originally called "Indian Territory" and was reserved for Native Americans. However, the 1889 Oklahoma Land Rush resulted in 50,000 people swarming the area on its opening day.
  • Guthrie was the original capital of Oklahoma.
  • Oklahoma is in the top three states that have more tornadoes per square mile.
  • The state is known for being the capital of the Bible Belt.
  • The Port of Catoosa-Port-of-Catoosa/582/) is the country's largest inland port.

Oklahoma Population Density by County

Oklahoma County

  • Population787,958
  • Density1111.64 per sq km
  • Growth Since 20109.33%
  • State Rank1
  • % of State20.05%

Oklahoma Population Growth Rate by County

Oklahoma is made up of many counties -- 77 to be exact. When data from the 2010 Census was compared to 2015 Census Bureau estimates, significant population growth and losses were recorded across the state. The highest population growth was recorded in the central region of the state. Canadian County posted a growth rate of 14.65%, by far the highest increase in the state. Its neighboring counties of Oklahoma, Logan, and McClain also posted high population growth rates of 7.73%, 9.34%, and 9.62% respectively. Other counties that also recorded growth include Woodward, Beckham, and Custer.

As far as declining populations, the highest loss came in the westernmost county of Cimarron, which had a loss of 9.81%. Other high declines were recorded in Latimer and Tillman Counties, while smaller losses being seen in counties including Beaver, Coal, and Pittsburg.

Population by Race

Race Population
White2,828,569
Two or More Races302,091
American Indian and Alaska Native289,871
Black or African American283,821
Some Other Race105,686
Asian80,670
Native Hawaiian and Other Pacific Islander5,543

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Oklahoma Population Pyramid 2018

50,000100,000150,000 Male Population50,000100,000150,000 Female Population80757065605550454035302520151050

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Oklahoma Median Age

36.3


Total

35.1


Male

37.7


Female

Oklahoma Adults

There are 2,939,976 adults, (574,330 of whom are seniors) in Oklahoma.

Oklahoma Age Dependency

64.7

Age Dependency Ratio

24.3

Old Age Dependency Ratio

40.4

Child Dependency Ratio

Oklahoma Sex Ratio

Female

1,965,636

50.45%

Male

1,930,615

49.55%

Oklahoma Households and Families

Oklahoma Renter vs Owner Occupied by Household Type

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Oklahoma Household Types

Type Owner Renter
Married81%19%
All65.7%34.3%
Male54.4%45.6%
Non Family52.4%47.6%
Female46.2%53.8%

65.7%

Rate of Home Ownership

Oklahoma Households by Type

Type Count Average Size Owned
All1,468,9712.5865.7
Married716,5733.281
Non Family497,2791.2652.4
Female180,1033.4146.2
Male75,0163.4254.4

3.16

Average Family Size

2.58

Average Household Size

5.3%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Oklahoma Households

Oklahoma Education

Oklahoma Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade107,4344.21%
9th to 12th Grade211,2198.27%
High School Graduate803,75531.48%
Some College602,85923.61%
Associates Degree193,8577.59%
Bachelors Degree422,88816.56%
Graduate Degree211,4768.28%

Oklahoma Educational Attainment by Race

Name Total High School Bachelors
White1,848,0711,671,852502,631
Hispanic188,943113,92620,837
Black172,034152,55832,678
Native American167,173142,33427,262
Multiple Races137,227120,38130,694
Other Race57,04930,3124,236
Asian52,23942,76721,746
Islander2,9862,487392

The highest rate of high school graduation is among white people with a rate of 90.46%.

The highest rate of bachelors degrees is among white people with a rate of 41.63%.

Oklahoma Earnings by Educational Attainment

Name Average Male Female
Overall$34,482$41,374$28,169
Less Than High School$22,562$27,245$15,661
High School Grad$28,272$34,958$21,876
Some College$33,163$41,813$27,008
Bachelors Degree$44,568$56,738$37,140
Graduate Degree$56,710$72,980$46,998

$34,482

Average Earnings

$41,374

Average Male

$28,169

Average Female

Oklahoma Language

Oklahoma Language by Age

Oklahoma Language

89.90% of Oklahoma residents speak only English, while 10.10% speak other languages. The largest non-English language is Spanish, which is spoken by 6.92% of the population.

Oklahoma Poverty

Oklahoma Poverty by Race

Name Total In Poverty Poverty Rate
White2,522,288317,73712.60%
Hispanic383,40295,55024.92%
Black266,24776,62228.78%
Native281,60361,82021.95%
Multiple291,95661,77821.16%
Other102,51925,55424.93%
Asian77,87212,40815.93%
Islander5,29499118.72%

16.21%

Overall Poverty Rate

14.58%

Male Poverty Rate

17.77%

Female Poverty Rate

Poverty in Oklahoma

The race most likely to be in poverty in Oklahoma is Black, with 28.78% below the poverty level.

The race least likely to be in poverty in Oklahoma is White, with 12.60% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.71%. Among those working part-time, it was 21.22%, and for those that did not work, the poverty rate was 23.33%.

Oklahoma Poverty Rate by Education

Name Poverty
Less Than High School26.64%
High School15.16%
Some College11.05%
Bachelors or Greater4.28%

Oklahoma Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed38.33%
Male Unemployed32.95%
Female Employed9.58%
Male Employed6.68%

Oklahoma Income

Oklahoma Income by Household Type

Name Median Mean
Households$49,767$67,682
Families$61,541$79,941
Married Families$73,297$92,891
Non Families$28,922$40,903

Oklahoma Marital Status

Oklahoma Marital Status

Marriage Rates

49.9%

Overall Marriage Rate

51.2%

Male Marriage Rate

48.8%

Female Marriage Rate

Oklahoma Married by Age and Sex

Oklahoma Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 35To44.

Oklahoma Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Oklahoma Veterans

Oklahoma Veterans by War

276,948

Number of Veterans

253,188

Male Veterans

23,760

Female Veterans

Name Veterans
Vietnam103,654
First Gulf War59,097
Second Gulf War52,242
Korea24,627
World War II10,610

Oklahoma Veterans by Age

Name Veterans
65 to 7471,729
35 to 5467,851
75+56,885
55 to 6452,831
18 to 3427,652

Oklahoma Veterans by Race

Name Veterans % of Total
White226,51410.27%
Black20,77510.06%
Indian13,6916.80%
2 or More12,3627.13%
Hispanic9,3453.97%
Other1,8722.69%
Asian1,4002.25%
Hawaiian3349.46%

Oklahoma Veterans by Education

7.86%

Veteran Poverty Rate

35.45%

Veteran Disability Rate

Oklahoma Employment Status

Oklahoma Employment by Age

61.4%

Labor Force Participation

57.4%

Employment Rate

5.7%

Unemployment Rate

Oklahoma Employment by Race

Oklahoma Employment by Education

Oklahoma Nativity

Oklahoma Citizenship Status

Data Sources
  1. Oklahoma Department of Commerce
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)