Portland, Iowa
Census-designated place
Portland Location within the state of Iowa
Coordinates: 43°7′42″N 93°07′24″W / 43.12833°N 93.12333°W / 43.12833; -93.12333
Country	United States
State	Iowa
County	Cerro Gordo
Area [1]
• Total	1.01 sq mi (2.61 km2)
• Land	0.99 sq mi (2.57 km2)
• Water	0.02 sq mi (0.04 km2)
Elevation	1,078 ft (329 m)
Population  (2020)
• Total	28
• Density	28.23/sq mi (10.90/km2)
Time zone	UTC-6 (Central (CST))
• Summer (DST)	UTC-5 (CDT)
ZIP code	50401
FIPS code	19-64155
GNIS feature ID	0460368

Portland is an unincorporated community and census-designated place (CDP) in Portland Township, Cerro Gordo County, Iowa, United States. As of the 2020 census it had a population of 28.

Portland's population in 1925 was 17.^[2] The population was 50 in 1940.^[3] The Portland post office operated from 1871 to 1936.^[4]

Portland is located in northern Iowa in eastern Cerro Gordo County, along the northeast bank of the Winnebago River. The Mason City limits are a short distance to the north, with downtown Mason City 6 miles (10 km) to the northwest. U.S. Route 18 is 1 mile (1.6 km) to the south.

As of the census of 2020,^[6] there were 28 people, 18 households, and 14 families residing in the community. The population density was 28.2 inhabitants per square mile (10.9/km²). There were 18 housing units at an average density of 18.1 per square mile (7.0/km²). The racial makeup of the community was 92.9% White, 0.0% Black or African American, 0.0% Native American, 3.6% Asian, 0.0% Pacific Islander, 0.0% from other races and 3.6% from two or more races. Hispanic or Latino persons of any race comprised 0.0% of the population.

Of the 18 households, 27.8% of which had children under the age of 18 living with them, 72.2% were married couples living together, 0.0% were cohabitating couples, 22.2% had a female householder with no spouse or partner present and 5.6% had a male householder with no spouse or partner present. 22.2% of all households were non-families. 5.6% of all households were made up of individuals, 5.6% had someone living alone who was 65 years old or older.

The median age in the community was 59.5 years. 3.6% of the residents were under the age of 20; 10.7% were between the ages of 20 and 24; 10.7% were from 25 and 44; 42.9% were from 45 and 64; and 32.1% were 65 years of age or older. The gender makeup of the community was 53.6% male and 46.4% female.