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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 04, 2020
Cover [Abstract]
Entity Registrant Name	GLEN BURNIE BANCORP
Entity Central Index Key	0000890066
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Common Stock Shares Outstanding		2,842,039
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Entity Interactive Data Current	Yes
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	false

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