Johnstown, Maryland

Johnstown, Maryland
Unincorporated community
Preston-on-the-Patuxent house
Johnstown Show map of Maryland Johnstown Show map of the United States
Coordinates: 38°19′44″N76°27′49″W / 38.32889°N 76.46361°W / 38.32889; -76.46361
Country	United States
State	Maryland
County	Calvert
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)

Johnstown is an unincorporated community in Calvert County, Maryland, United States. ^[1] The historic Preston-on-the-Patuxent house was listed on the National Register of Historic Places in 1974. ^[2]

References

1. "Geographic Names Information System". Johnstown (Populated Place). U.S. Geological Survey. January 29, 2009.
2. "National Register Information System". National Register of Historic Places . National Park Service. April 15, 2008.