Hillsdale Library, Public library in Hillsdale, Portland, Oregon.

Hillsdale Library is a branch of the Multnomah County Library at 1515 Southwest Sunset Boulevard in Portland, Oregon. The 2004 Modernist building by Thomas Hacker and Associates has 12,000 square feet of floor space, a tubular steel roof, a reading room with a 20-foot ceiling and 10-square-foot skylights, and parking below.

The building opened in 1957 and replaced an earlier deposit station that had served the neighborhood since 1913. This new facility marked an important turning point in expanding library services to the community.

The library serves as a community gathering space with programs designed for all ages living in the neighborhood. It functions as a place where residents connect and access information resources together.

The 2004 building has parking below it, and the reading room rises to a 20-foot ceiling lit by 10-square-foot skylights. The library closed temporarily in 2024 for interior renovations funded by a 2020 building bond, so check before visiting. It sits at 1515 Southwest Sunset Boulevard in Hillsdale.

The library's 2004 building was designed by Thomas Hacker and Associates, the firm behind all 16 other branches redesigned or renovated in the same period. Officials first aimed for LEED silver but reached gold status instead. The reading room has a 20-foot ceiling, a tubular steel roof and 10-square-foot skylights.