| Cover Page | Jan. 27, 2022 |
| Cover Page | |
| Entity Central Index Key | 0001901637 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 27, 2022 |
| Entity Registrant Name | USCB FINANCIAL HOLDINGS, INC. |
| Entity Incorporation State Country Code | FL |
| Entity File Number | 001-41196 |
| Entity Tax Identification Number | 87-4070846 |
| Entity Address, Address Line One | 2301 N.W. 87th Avenue |
| Entity Address, City or Town | Miami |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33172 |
| City Area Code | 305 |
| Local Phone Number | 715-5200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A common stock, $1.00 par value per share |
| Trading Symbol | USCB |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
