| Cover | Jul. 21, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jul. 21, 2021 |
| Entity File Number | 000-24751 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.10 par value per share |
| Trading Symbol | SAL |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
