[header] How to get a marriage license (usa ) [title] Know who can marry in the united states. [step] In the us, states have specific restrictions on who can and cannot marry. For example, individuals who cannot give informed consent, such as people with severe developmental disabilities, may not be able to marry. 
Restrictions vary by state, so you must research your state's requirements. In general, the following restrictions will apply : [substeps] Age.