Ontario in San Bernardino County, California — The American West (Pacific Coastal)

Ontario Laundry Company

401 North Euclid Avenue

— 1940 est. —

Ontario Laundry Company Marker image. Click for full size.

Photographed by Duane and Tracy Marsteller, September 28, 2025

1. Ontario Laundry Company Marker

Inscription. This site was home to the Ontario Laundry Company beginning in 1896. In 1940, Southern Service, an affiliate of the laundry company, built this Streamline Moderne architectural style building for a cost of $35,000. The front patio area was previously used as a drive-thru for the laundry business. The circular tower at the southeast corner of the building juts three stories high and was designed to resemble a washing machine agitator. The poured concrete building features classic detailing of the style including expanses of steel frame windows, long horizontal lines, and curving forms.
Ontario Historic Landmark No. 6
Designated on June 6, 1995

Erected 2020 by City of Ontario, California. (Marker Number 6.)

Topics. This historical marker is listed in these topic lists: Architecture • Industry & Commerce. A significant historical year for this entry is 1896.

Location. 34° 4.031′ N, 117° 39.086′ W. Marker is in Ontario, California, in San Bernardino County. It is at the intersection of North Euclid Avenue (California Route 83) and West D Street, on the right when traveling south on North Euclid Avenue. Touch for map. Marker is at or near this postal address: 401 N Euclid Ave, Ontario CA 91762, United States of America. Touch for directions.

Regionally, this marker is in Greater Los Angeles,

in the Inland Empire,

in the Peninsular Ranges,

and specifically in the Transverse Ranges.

It is also in the American Southwest.

Globally, it is in North America,

on the Ring of Fire,

in the Pacific Rim,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers

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are within walking distance of this marker: WCTU Fountain (about 500 feet away, measured in a direct line); Ontario Masonic Hall (about 700 feet away); Bethel Congregational Church (approx. 0.2 miles away); Ontario Town Square (approx. 0.2 miles away); Mule Car (approx. 0.2 miles away); George Chaffey, Jr. (approx. 0.2 miles away); Nine Young Pepper Trees (approx. ¼ mile away); Carriage House (approx. ¼ mile away). Touch for a list and map of all markers in Ontario.

Photographed by Duane and Tracy Marsteller, September 28, 2025

2. Ontario Laundry Company Marker

Credits. This page was last revised on November 24, 2025. It was originally submitted on November 6, 2025, by Duane and Tracy Marsteller of Murfreesboro, Tennessee. This page has been viewed 74 times since then and 45 times this year. Photos: 1, 2. submitted on November 6, 2025, by Duane and Tracy Marsteller of Murfreesboro, Tennessee.

Editor’s want-list for this marker. Photograph of the entire building, including the tower referenced in the marker • Can you help?