"A Master Plan Element"(PDF). Maryland: City of Gaithersburg. October 5, 2007. p. 3. Archived from the original on December 28, 2016. Retrieved October 17, 2016.
Although NIST's mailing address states Gaithersburg, and the City of Gaithersburg surrounds NIST's property, the land where NIST is situated is not incorporated into the City of Gaithersburg. Instead, it is in an unincorporated part of Montgomery County. Owing to how land has been added to Gaithersburg over the years, there are multiple such unincorporated enclaves within the perimeter; see the City's Zoning Map for details (3MB PDF).
"A Master Plan Element"(PDF). Maryland: City of Gaithersburg. October 5, 2007. p. 3. Archived from the original on December 28, 2016. Retrieved October 17, 2016.