The church is located in a residential area west of downtown Sioux City, Iowa, United States.

[2] In December 1885 a meeting was held by German Catholics in Sioux City to form a new parish.

Brother Leonard Darschield, OFM, designed the new church in the Romanesque Revival style.

The present school building and heating plant were designed by prominent Sioux City architect William LaBarthe Steele, and completed in 1924.

At the time it was built, St. Boniface Church was the tallest structure in Sioux City.

[2] The exterior is clad with brick from Buffalo, New York and the trim is in Bedford limestone.

[2] It features a projecting center bay on its north elevation that includes the main entrance.

The simple, two-story brick power plant was built at the same time as the school.

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