Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 21, 2022	Jun. 30, 2021
Cover
Document Period End Date	Dec. 31, 2021
Document Annual Report	true
Document Transition Report	false
Entity File Number	0-24047
Entity Registrant Name	GLEN BURNIE BANCORP
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	52-1782444
Entity Address, Address Line One	101 Crain Highway, S.E.
Entity Address, City or Town	Glen Burnie
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	21061
Entity Well-Known Seasoned Issuer	No
City Area Code	410
Local Phone Number	766-3300
Entity Voluntary Filers	No
Entity Central Index Key	0000890066
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Entity Common Stock Shares Outstanding		2,856,257
Auditor Name	TGM Group LLC 141
Auditor Firm ID	1195
Auditor Location	Salisbury, Maryland
Document Type	10-K
Entity Interactive Data Current	Yes
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Public Float			$ 29,141,149