Onslow County, NC Population

Overview

201,597

Total Population

26.9

Median age

44.36%

Female population %

125.4:100

Gender ratio (M:F)

20-24 years

Largest age group

44.2

Total dependency ratio

White

Largest racial group

26,321

Hispanic population

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

TABLE OF CONTENTS

Age

Onslow County's population is young compared to the rest of the country:

The median age in Onslow County is 26.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Onslow County's population under 18 was 24.38%, compared to the 22.51% nationwide.
Onslow County's elderly or the senior population (over 65 age) was 9.32% as compared to 16.04% nationwide.
Of the total population in Onslow County, 21.31% were under the age of 15, 34.73% aged 15 to 29, 34.64% aged 30 to 64, 8.41% aged 65 to 84, and 0.90% were 85 years of age and older.

There are 22,751 less females than males in Onslow County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 44.36% females and 55.64% males in Onslow County, NC.
The Onslow County, NC gender ratio is 125.4:100 i.e. 125.4 men to 100 women (1.254).
For male population, the largest age group is 20-24 years with a population of 24,826.
For the female population, the largest age group is 20-24 years with a population of 9,198.

Onslow County's population has become increasingly diverse:

Racial distribution of Onslow County population: 72.07% are White, 14.33% are Black or African American, 0.53% are American Indian and Alaska Native, 1.99% are Asian, 0.17% are Native Hawaiian and other Pacific Islander, 2.13% are some other race and 8.78% are multiracial.
Onslow County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 26,321 is Hispanic or Latino (of any race), and 175,276 (86.94% of the total population) is Non-Hispanic.
The largest racial group in Onslow County is White with a population of 145,281 (72.07% of the total population).

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

The peak population was 207,298 in the year 2022
From 2000 to 2010, Onslow County's population increased by 36,491 (24.26%), as compared to the national growth of 9.63%.
From 2010 to 2020, Onslow County's population increased by 18,019 (9.64%), 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, Onslow County's population was lowest in year 2003 at 148,711.