Emergency Biohazard Cleanup Near West Waterloo Waterloo, OR

Waterloo is a city in Linn County, Oregon, that had a population of 222 as of the 2020 census, down from 229 in 2010.

Waterloo was incorporated in 1893 and covers just 0.12 square miles, all of it land, at an elevation of 404 feet, with Lebanon as the closest city.

The city's name, a joking reference to the Battle of Waterloo, stemmed from a 19th-century court decision that settled a land dispute at Kees Mill along the South Santiam River, after which Kees Mill became known as Waterloo.

The federal government established a post office at Waterloo on January 5, 1875, with S. D. Granger as its first postmaster, and the post office closed in 1974.

Waterloo has a warm-summer Mediterranean climate, with warm but not hot and dry summers and no average monthly temperature above 71.6 degrees Fahrenheit.

As of the 2010 census, Waterloo had 79 households, with an average household size of 2.90 people and an average family size of 3.27, and its median age was 42.3 years.

Waterloo's population has remained small throughout its history, from 59 in the 1900 census to 239 in 2000, its highest count, and 222 in 2020.

Waterloo is listed with ZIP code 97355, the Lebanon postal code, and area codes 458 and 541.

Waterloo sits on the South Santiam River, and a historic stereoscope image of the river at Waterloo is one of the town's enduring images.