Portage County was created from theWisconsin Territory in 1836 and organized in 1844.[4] Like the city ofPortage, Portage County is named for theportage between the Fox and Wisconsin rivers; Portage County originally included the city of Portage and the portage for which it was named, but boundary changes detached the county from its namesake.[5]
According to theU.S. Census Bureau, the county has a total area of 823 square miles (2,130 km2), of which 801 square miles (2,070 km2) is land and 22 square miles (57 km2) (2.7%) is water.[6]
As of the2020 census, the population was 70,377, the median age was 38.8 years, 19.7% of residents were under the age of 18, and 18.0% were 65 years of age or older. For every 100 females there were 100.9 males, and for every 100 females age 18 and over there were 99.7 males age 18 and over.[12]
There were 29,138 households in the county, of which 24.7% had children under the age of 18 living in them. Of all households, 48.2% were married-couple households, 20.1% were households with a male householder and no spouse or partner present, and 23.2% were households with a female householder and no spouse or partner present. About 29.9% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older.[12]
Thepopulation density was 87.9 people per square mile (33.9 people/km2). There were 31,148 housing units at an average density of 38.9 units per square mile (15.0 units/km2); 6.5% were vacant, 68.4% of occupied units were owner-occupied, and 31.6% were renter-occupied. The homeowner vacancy rate was 0.8% and the rental vacancy rate was 4.7%.[12]
As of thecensus[15] of 2000, there were 67,182 people, 25,040 households, and 16,501 families residing in the county. Thepopulation density was 83 people per square mile (32 people/km2). There were 26,589 housing units at an average density of 33 units per square mile (13 units/km2). The racial makeup of the county was 95.73%White, 0.32%Black orAfrican American, 0.36%Native American, 2.25%Asian, 0.04%Pacific Islander, 0.43% fromother races, and 0.86% from two or more races. 1.44% of the population wereHispanic orLatino of any race. 32.8% were ofPolish, 31.6%German, 5.4%Norwegian and 5.0%Irish ancestry. 93.9% spokeEnglish, 1.7%Spanish, 1.6%Polish and 1.3%Hmong as their first language.
There were 25,040 households, out of which 32.10% had children under the age of 18 living with them, 55.10% weremarried couples living together, 7.30% had a female householder with no husband present, and 34.10% were non-families. 24.50% of all households were made up of individuals, and 8.80% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.07.
In the county, the population was spread out, with 24.10% under the age of 18, 16.20% from 18 to 24, 27.70% from 25 to 44, 21.10% from 45 to 64, and 10.90% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 99.40 males. For every 100 females age 18 and over, there were 96.80 males.
In 2017, there were 674 births, giving a general fertility rate of 46.4 births per 1000 women aged 15–44, the third lowest rate out of all 72 Wisconsin counties.[16]
Kisti's Royal Garden by Walther Lysne and Robin Lysne (Walther's granddaughter), (Santa Cruz, CA:Blue Bone Books, 2023) uses diaries and historical records to tell the true story of Kisti Lysne (1824-1890), her Norwegian family, and the nativeHo-Chunk (Winnebago) people in the Portage County, WI area.