New as of 2015 you will be expected to put your future name on the marriage license application (the groom as well). Whether or not you are changing your name, you'll need to put that information down for the town clerk at the time you obtain the marriage license. They will fill it out and the final document will be issued with your new name.
Once the Justice of the Peace has returned your marriage license to the town you received it from, you will need to ask that town clerk for a copy of the license. Once you have that, then you can call Social Security at 800-772-1213 and follow the automated instructions. Then they will send you a new social security card.
Once you have that, you can go to your state's DMV/RMV with your new social security card and the official copy of the marriage license. It's best to wait until after the honeymoon if you intend to change your passport, as you might need that for travel.
Prior to your wedding day, you will both need to get your marriage license from any Town Clerk or Town Hall in New Hampshire. There is no waiting period but the license will expire after 90 days. Witnesses and blood tests are not needed in NH.
You will need to go together and bring proof of age as well as proof of any previous marriages ended by divorce or death. Please discuss with the Town Clerk how to obtain copies of the certificate, once it has been turned in by the Justice of the Peace. The Town Clerk is the one who generates the final formal document, not the Justice of the Peace. The town or city will need you to formally request those copies and yes, you'll need to pay for them too. You will turn that document over to the officiant (usually at the rehearsal or before the wedding) and they will return it to the town it came from. Often the Town-Clerk includes an addressed envelope to help ensure it goes back to the right Town Hall. Please give this to the officiant as well.
In NH, a marriage may be performed by :
- A Justice of the Peace commissioned in N.H.
- Ordained Clergy residing in N.H.
- Unordained clergy residing in N.H. and have obtained a license from the Secretary of State
- Non-resident Ordained Minister and have obtained a license from the Secretary of State
- Non-resident Ordained Minister and have a Pastoral charge in N.H.
- Non-resident Justice of the Peace and have obtained a license from the Secretary of State
- Non-resident Jewish Rabbi US Citizen and have obtained a license from the Secretary of State
- US Judge or Magistrate residing in N.H. and have obtained a license from the Secretary of State
- The application for the special license is on the NH Secretary of State Web site. Reference this web site for additional information and clarification on other persons permitted to perform marriages within the state.
A license may be issued the same day of the application, provided all signatures and statutory requirements are met.