Lyon County, IA Population

Overview

11,953

Total Population

37.9

Median age

48.89%

Female population %

104.5:100

Gender ratio (M:F)

5-9 years

Largest age group

71.3

Total dependency ratio

White

Largest racial group

351

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Lyon County is 37.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Lyon County's population under 18 was 28.38%, compared to the 22.51% nationwide.
Lyon County's elderly or the senior population (over 65 age) was 18.19% as compared to 16.04% nationwide.
Of the total population in Lyon County, 23.43% were under the age of 15, 17.36% aged 15 to 29, 41.03% aged 30 to 64, 15.14% aged 65 to 84, and 3.05% were 85 years of age and older.

There are 265 less females than males in Lyon County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.89% females and 51.11% males in Lyon County, IA.
The Lyon County, IA gender ratio is 104.5:100 i.e. 104.5 men to 100 women (1.045).
For male population, the largest age group is 10-14 years with a population of 561.
For the female population, the largest age group is 5-9 years with a population of 501.

Lyon County's population has become increasingly diverse:

Racial distribution of Lyon County population: 95.85% are White, 0.14% are Black or African American, 0.33% are American Indian and Alaska Native, 0.60% are Asian, 0.15% are Native Hawaiian and other Pacific Islander, 0.87% are some other race and 2.05% are multiracial.
Lyon County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 351 is Hispanic or Latino (of any race), and 11,602 (97.06% of the total population) is Non-Hispanic.
The largest racial group in Lyon County is White with a population of 11,457 (95.85% of the total population).

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

The peak population was 12,179 in the year 2022
From 2000 to 2010, Lyon County's population decreased by 171 (1.46%), as compared to the national growth of 9.63%.
From 2010 to 2020, Lyon County's population increased by 358 (3.09%), 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, Lyon County's population was lowest in year 2009 at 11,250.