An Associated Press survey of the counties Thursday found that all but 12 were issuing the licenses after a federal judge last week struck down the state's ban as unconstitutional. However, the judge created by confusion by not telling state officials how to implement her decision.
As of midday Thursday, 555 marriage licenses have been issued to same-sex couples around the state.
Republican Attorney General J.B. Van Hollen is trying to get last week's ruling put on hold to stop clerks from issuing licenses. Van Hollen said Thursday that those clerks could face charges from local district attorneys for breaking the law by issuing the licenses.