McClain County, OK Population

Overview

41,258

Total Population

38.8

Median age

50.06%

Female population %

99.7:100

Gender ratio (M:F)

5-9 years

Largest age group

57.3

Total dependency ratio

White

Largest racial group

3,491

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

McClain County's population is old compared to the rest of the country:

The median age in McClain County is 38.8, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
McClain County's population under 18 was 25.69%, compared to the 22.51% nationwide.
McClain County's elderly or the senior population (over 65 age) was 15.45% as compared to 16.04% nationwide.
Of the total population in McClain County, 20.97% were under the age of 15, 17.59% aged 15 to 29, 45.99% aged 30 to 64, 14.49% aged 65 to 84, and 0.96% were 85 years of age and older.

There are 52 more females than males in McClain County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.06% females and 49.94% males in McClain County, OK.
The McClain County, OK gender ratio is 99.7:100 i.e. 99.7 men to 100 women (0.997).
For male population, the largest age group is 10-14 years with a population of 1,685.
For the female population, the largest age group is 35-39 years with a population of 1,676.

McClain County's population has become increasingly diverse:

Racial distribution of McClain County population: 82.65% are White, 1.16% are Black or African American, 5.77% are American Indian and Alaska Native, 0.18% are Asian, 0.05% are Native Hawaiian and other Pacific Islander, 1% are some other race and 9.19% are multiracial.
McClain County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 3,491 is Hispanic or Latino (of any race), and 37,767 (91.54% of the total population) is Non-Hispanic.
The largest racial group in McClain County is White with a population of 34,101 (82.65% of the total population).

McClain County's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 45,306 in the year 2022
From 2000 to 2010, McClain County's population increased by 6,904 (24.81%), as compared to the national growth of 9.63%.
From 2010 to 2020, McClain County's population increased by 7,174 (20.65%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, McClain County's population was lowest in year 2001 at 27,799.