Size is not all that matters. But still, we would love to know how big St. Helens in Oregon is. Here is the answer:
St. Helens, Oregon covers an area of 15.28 square kilometers (5.9 square miles).
With 12,883 people living in St. Helens that comes to a population density of 843.13 inhabitants per square kilometer (2183.56 / sq mi)
As a reference: The 8,398,748 people living in New York City are crammed onto 1214 sq km (468.73 sq mi), which results into a population density of 6918 inhabitants per square kilometer (17918 / sq mi).

St. Helens is the county seat of Columbia County, Oregon. It was founded by Captain Henry Montgomery Knighton, a native of New England, in 1845, as “Plymouth”. The name was changed to St. Helens in the latter part of 1850 for its view of Mount St. Helens, roughly 39 miles (63 km) away in Washington. The city is about 28 miles (45 km) northwest of Portland. Its population was 12,883 at the 2010 census.
Cities with a similar size as St. Helens
If you want to check which cities have a similar size as St. Helens, Oregon, here you go:
- St. Peter, Minnesota with a size of 15.55 square kilometers (15.55 sq mi), population: 11,196
- Nederland, Texas with a size of 15.67 square kilometers (15.67 sq mi), population: 17,422
- Braintree, Massachusetts with a size of 14.50 square kilometers (14.50 sq mi), population: 35,744
- Fenton, Michigan with a size of 18.14 square kilometers (18.14 sq mi), population: 11,756
- Tallmadge, Ohio with a size of 14.02 square kilometers (14.02 sq mi), population: 17,537
- Storm Lake, Iowa with a size of 13.66 square kilometers (13.66 sq mi), population: 10,076
- Lincoln Park, Michigan with a size of 15.23 square kilometers (15.23 sq mi), population: 40,008
- West Fargo, North Dakota with a size of 14.72 square kilometers (14.72 sq mi), population: 31,771
- Havre de Grace, Maryland with a size of 15.20 square kilometers (15.20 sq mi), population: 12,952
- Allen Park, Michigan with a size of 18.26 square kilometers (18.26 sq mi), population: 28,210
Cities with a similar population density as St. Helens
Other cities that have a similar population density as St. Helens, Oregon are:
- Saginaw, Texas with a population density of 1,010 people per sq km (2,616 / sq mi).
- Eagle Pass, Texas with a population density of 1,047 people per sq km (2,712 / sq mi).
- Danville, Illinois with a population density of 723 people per sq km (1,872 / sq mi).
- El Paso, Texas with a population density of 1,023 people per sq km (2,650 / sq mi).
- Portsmouth, Ohio with a population density of 729 people per sq km (1,889 / sq mi).
- Owensboro, Kentucky with a population density of 1,021 people per sq km (2,644 / sq mi).
- Dallas, Georgia with a population density of 978 people per sq km (2,532 / sq mi).
- Youngstown, Ohio with a population density of 747 people per sq km (1,936 / sq mi).
- Burlington, North Carolina with a population density of 762 people per sq km (1,972 / sq mi).
- Springfield, Missouri with a population density of 743 people per sq km (1,924 / sq mi).
Cities with a similar population size as St. Helens
Here a list of cities that have a similar number of inhabitants like St. Helens, Oregon:
- Rye, New York with a population of 15,720 people
- Morgan City, Louisiana with a population of 12,404 people
- Cocoa Beach, Florida with a population of 11,231 people
- Altoona, Iowa with a population of 14,541 people
- Somerset, Kentucky with a population of 11,196 people
- La Palma, California with a population of 15,568 people
- Cedarburg, Wisconsin with a population of 11,412 people
- Chippewa Falls, Wisconsin with a population of 13,661 people
- Addison, Texas with a population of 13,056 people
- Yazoo City, Mississippi with a population of 14,550 people
