| Document and Entity Information | Nov. 04, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 4, 2021 |
| Entity File Number | 0-25969 |
| Entity Registrant Name | URBAN ONE, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 52-1166660 |
| Entity Address, Address Line One | 1010 Wayne Avenue |
| Entity Address, Address Line Two | 14th Floor |
| Entity Address, City or Town | Silver Spring |
| Entity Address, State or Province | MD |
| City Area Code | 301 |
| Local Phone Number | 429-3200 |
| Entity Address, Postal Zip Code | 20910 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001041657 |
| Common Stock Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, $.001 Par Value |
| Trading Symbol | UONE |
| Security Exchange Name | NASDAQ |
| Common Stock Class D [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class D Common Stock, $.001 Par Value |
| Trading Symbol | UONEK |
| Security Exchange Name | NASDAQ |
