| Portland, Iowa | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA Iowa |
| Pushpin Label: | Portland |
| Pushpin Map Caption: | Location within the state of Iowa |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Cerro Gordo |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.61 |
| Area Land Km2: | 2.57 |
| Area Water Km2: | 0.04 |
| Population As Of: | 2020 |
| Population Total: | 28 |
| Population Density Km2: | 10.90 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1078 |
| Coordinates: | 43.1283°N -93.1233°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 50401 |
| Blank Name: | FIPS code |
| Blank Info: | 19-64155 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0460368 |
| Area Total Sq Mi: | 1.01 |
| Area Land Sq Mi: | 0.99 |
| Area Water Sq Mi: | 0.02 |
| Population Density Sq Mi: | 28.23 |
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 6miles to the northwest. U.S. Route 18 is to the south.
As of the census of 2020,[5] 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.