Northborough is a census-designated place (CDP) in the town of Northborough in Worcester County, Massachusetts, United States.

The population was 6,474 at the 2020 United States census.

[2] According to the United States Census Bureau, the CDP has a total area of 8.6 km2 (3.3 mi2), of which 8.6 km2 (3.3 mi2) is land and 0.30% is water.

[2] At the 2020 census, there were 6,474 people and 2,514 households in the CDP.

[2] The racial makeup of the CDP was 84.1% White, 1.5% Black or African American, 0.0% Native American, 7.5% Asian, 0.0% Pacific Islander, and 5.1% from two or more races.