Home Business Taxes Starting a Business Circuit Court Clerks Clerks of the Circuit Court You can obtain local business licenses and related information by contacting the appropriate office of the Clerk of the Circuit Court listed below: County Phone Number Allegany 301-777-5922 Anne Arundel 410-222-1434 Baltimore City 410-333-3790 Baltimore County 410-887-2607 Calvert 410-535-1660 Caroline 410-479-1811 Carroll 410-386-2022 Cecil 410-996-5380 Charles 301-932-3240 Dorchester 410-228-0480 Frederick 301-600-1962 Garrett 301-334-1937 Harford 410-638-3248 Howard 410-313-5850 Kent 410-778-7460 Montgomery 240-777-9460 Prince George's 301-952-3330 Queen Anne's 410-758-1773 Somerset 410-845-4840 St. Mary's 301-475-7844 Talbot 410-822-2611 Washington 301-733-8660 Wicomico 410-543-6551 Worcester 410-632-5500