Sand Brook is an unincorporated community located along County Route 523, Sand Brook-Headquarters & Britton Roads in Delaware Township in Hunterdon County, in the U.S. state of New Jersey.

Sand Brook Historic District
U.S. National Register of Historic Places
U.S. Historic district
New Jersey Register of Historic Places
Area	27 acres (11 ha)
Architectural style	Greek Revival, Late Victorian
NRHP reference No.	13000497
NJRHP No.	4843
Significant dates
Added to NRHP	July 17, 2013
Designated NJRHP	February 21, 2013

The Sand Brook Historic District is a 27-acre (11 ha) historic district encompassing the community. It was added to the National Register of Historic Places on July 17, 2013, for its significance in architecture and community development. The district includes 16 contributing buildings, six contributing structures, and two contributing sites. It includes Greek Revival and Late Victorian architecture.

The former Sand Brook General Store was built around 1902 by Samuel F. Fauss. It is a two-story frame building featuring Queen Anne architecture. The Sand Brook German Baptist Church was built around 1850 by a group from the Amwell Church of the Brethren. It is a one-story stuccoed-stone building with Greek Revival influences. The congregation was locally known as the "Moorites", after elder John P. Moore and his family. The small stone-walled cemetery located behind the church also contributes to the district.

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  German Baptist Church
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  Cemetery

• Media related to Sand Brook, New Jersey at Wikimedia Commons