St. Croix County, WI Population

Overview

92,495

Total Population

39.6

Median age

49.60%

Female population %

101.6:100

Gender ratio (M:F)

55-59 years

Largest age group

52.5

Total dependency ratio

White

Largest racial group

2,394

Hispanic population

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

TABLE OF CONTENTS

Age

St. Croix County's population is old compared to the rest of the country:

The median age in St. Croix County is 39.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
St. Croix County's population under 18 was 24.76%, compared to the 22.51% nationwide.
St. Croix County's elderly or the senior population (over 65 age) was 14.18% as compared to 16.04% nationwide.
Of the total population in St. Croix County, 20.24% were under the age of 15, 17.12% aged 15 to 29, 48.45% aged 30 to 64, 12.62% aged 65 to 84, and 1.57% were 85 years of age and older.

There are 735 less females than males in St. Croix County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.60% females and 50.40% males in St. Croix County, WI.
The St. Croix County, WI gender ratio is 101.6:100 i.e. 101.6 men to 100 women (1.016).
For male population, the largest age group is 10-14 years with a population of 3,766.
For the female population, the largest age group is 55-59 years with a population of 3,838.

St. Croix County's population has become increasingly diverse:

Racial distribution of St. Croix County population: 94.17% are White, 0.68% are Black or African American, 0.06% are American Indian and Alaska Native, 0.91% are Asian, 0.01% are Native Hawaiian and other Pacific Islander, 0.78% are some other race and 3.40% are multiracial.
St. Croix County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 2,394 is Hispanic or Latino (of any race), and 90,101 (97.41% of the total population) is Non-Hispanic.
The largest racial group in St. Croix County is White with a population of 87,099 (94.17% of the total population).

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

The peak population was 96,017 in the year 2022
From 2000 to 2010, St. Croix County's population increased by 20,770 (32.64%), as compared to the national growth of 9.63%.
From 2010 to 2020, St. Croix County's population increased by 9,475 (11.23%), 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, St. Croix County's population was lowest in year 2000 at 63,629.