Cover - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 01, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--12-31
Entity File Number	0-24751
Entity Registrant Name	SALISBURY BANCORP INC.
Entity Central Index Key	0001060219
Entity Tax Identification Number	06-1514263
Entity Incorporation, State or Country Code	CT
Entity Address, Address Line One	5 Bissell Street
Entity Address, City or Town	Lakeville
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06039
City Area Code	(860)
Local Phone Number	435-9801
Title of 12(b) Security	Common Stock, Par Value $0.10 per share
Trading Symbol	SAL
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Public float			$ 116,500,000
Entity Common Stock, Shares Outstanding		2,845,147