Pre-18 voter registration in

By Mail: ID Requirements

Federal law now requires that all voter registration applications must include either the applicant's DC-issued driver's license number or the last four digits of the applicant's Social Security number in order to be processed. If you have not been issued any of these numbers you must indicate "NONE".

By Mail: Eligibility Requirements

To register in the District of Columbia you must:

be a United States citizen (required to vote in federal elections. If you are District of Columbia resident and not a US citizen, you can vote in DC local elections)

be a resident of the District of Columbia for at least 30 days prior to the election in which you intend to vote

not claim voting residence or the right to vote in another U.S. state, territory or country

be at least 17 years old (you may register to vote if you are at least 16 years old. You may vote in a primary election if you are at least 17 years old and you will be at least 18 years old by the next general election. You may vote in a general or special election if you are at least 18 years old.)

not have been found by a court to be legally incompetent to vote

By Mail: New Voter Instructions

If you are registering to vote for the first time in your jurisdiction and are mailing this registration application, federal law requires you to show proof of identification the first time you vote. Proof of identification includes:

A current and valid photo identification or

A current utility bill, bank statement, government check, paycheck or government document that shows your name and address.

More information here.

Online Instructions

To register in DC, you must provide your DC DMV-issued identification number or if you do not have a DMV-issued identification number, the last four digits of your Social Security number. If you are registering to vote in the District of Columbia for the first time and submit a voter registration application electronically, you may be required to provide identification that shows your name and current address the first time you vote in an election. You may attach a copy of your document to the online form, or you may be required to show it the first time you vote in an election in the District of Columbia. Acceptable forms include: current and valid government-issued photo ID; current utility bill, cell phone bill, bank statement, government check, or paycheck dated no more than 90 days before submitting your application if a copy is submitted online or 90 days before voting if shown at a voting location; any other government-issued document.

More information here.