|Country||United States of America|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||589687|
Baldwin is an unincorporated community in Baltimore County, Maryland, United States. The United States Postal Service has assigned Baldwin the ZIP Code 21013. Until 1958, this community was served by the Maryland and Pennsylvania Railroad at milepost 18.4. Hidden Valley Farm was listed on the National Register of Historic Places in 1983.
- U.S. Geological Survey Geographic Names Information System: Baldwin, Maryland
- Zip Code Lookup
- Staff (2008-04-15). "National Register Information System". National Register of Historic Places. National Park Service.
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