Editing Oulu, Wisconsin (section)

=== 2020 census ===
As of the 2020 census, there were 560 people, 313 housing units, and 221 families in the town. The racial makeup was 94.8% [[White Americans|White]], 0.3% [[African Americans|African American]], 0.3% [[Native Americans in the United States|Native American]], 0.0% [[Asian Americans|Asian]], 0.1% from some other race, and 4.2% from [[Multiracial Americans|two or more races]]. Those of [[Hispanic and Latino Americans|Hispanic or Latino]] origin made up 1.6% of the population.<ref name=":0">{{Cite web |title=Explore Census Data |url=https://data.census.gov/profile/Oulu_town;_Bayfield_County;_Wisconsin?g=060XX00US5500760775 |access-date=June 15, 2023 |website=data.census.gov}}</ref>

The ancestry was 21.6% [[German Americans|German]], 10.7% [[Swedish Americans|Swedish]], 10.5% [[Norwegian Americans|Norwegian]], 9.0% [[English Americans|English]], 8.6% [[Irish Americans|Irish]], and 3.2% [[Polish Americans|Polish]].<ref name=":0" />

The median age was 53.4 years old. 21.6% of the population were 65 or older, 17.8% were between 65 and 74, 3.4% were between 75 and 84, and 0.4% were 85 or older. 13.7% of the population were under 18, with 2.4% under 5, 7.7% between the ages of 5 and 14, and 3.6% between 15 and 17.<ref name=":0" />

The median household income was $77,625, families had $77,969, married couples had $78,281, and non-families had $77,000. 6.9% of people were in poverty.<ref name=":0" />