Dec 23
Social Security Number Identity

In this blog, I explain the numerous ways to identify sensitive data. The main point in this posting is to articulate the complex nature of identifying sensitive data to comply with regulation, compliance, data governance, and data hygiene practices. In scenarios such as these, the advantages of using automated tools such as "Spirion.com" to augment manual approaches is obvious.

The Social Security Number (SSN) is divided into three parts consisting of 9 digits.

  • The first three digits are the State or territory where the SSN is assigned, the remaining they are randomly assigned.
  • The second set of two numbers are the "group numbers".
  • The third set of four numbers is a numerical sequence of digits 0001 to 9999.

Notes

  • Effective June 25, 2011, the SSA began a new randomized assignment methodology, called "SSN Randomization", in an effort to extend the longevity of the nine-digit SSN nationwide as well as for security since randomization makes the newly assigned SSN's more difficult to reconstruct using public information. Unused area numbers previously assigned to states, as well as previously unassigned area numbers, will now be available in the new randomization system.
  • 700-728 issuance of these numbers to railroad employees was discontinued July 1, 1963.

Social Security Number "Area Code" Number Chart    

The first three digits of a Social Security Number correspond to locations as follows:

Pre-Fix

State

 

Pre-Fix

State

001-003

New Hampshire

 

531-539

Washington

449-467

Texas

 

268-302

Ohio

627-645

  

540-544

Oregon

004-007

Maine

 

303-317

Indiana

468-477

Minnesota

 

545-573

California

008-009

Vermont

 

602-626

 

478-485

Iowa

 

318-361

Illinois

010-034

Massachusetts

 

574

Alaska

486-500

Missouri

 

362-386

Michigan

035-039

Rhode Island

 

575-576

Hawaii

501-502

North Dakota

 

750-751

 

040-049

Connecticut

 

387-399

Wisconsin

503-504

South Dakota

 

577-579

District of Columbia

050-134

New York

 

400-407

Kentucky

505-508

Nebraska

 

580

Virgin Islands

135-158

New Jersey

 

408-415

Tennessee

509-515

Kansas

 

756-763

 

159-211

Pennsylvania

 

580-584

Puerto Rico

516-517

Montana

 

596-599

 

212-220

Maryland

 

416-424

Alabama

518-519

Idaho

 

586

Guam

221-222

Delaware

 

425-428

Mississippi

520

Wyoming

 

587-588

 

223-231

Virginia

 

752-755

 

691-699

  

586

American Samoa

521-524

Colorado

 

429-432

Arkansas

650-653

  

676-679

 

232-236

West Virginia

 

586

Philippine Islands

525, 585

New Mexico

 

433-439

Louisiana

648-649

  

659-665

 

232

North Carolina

 

700-728

Railroad Board

237-246

  

440-448

Oklahoma

681-690

  

729-733

Enumeration at Entry

526-527

Arizona

 

237-246

Officially: Not Issued

600-601

  

587-665

 

764-765

  

667-679

 

247-251

South Carolina

 

681-699

 

654-658

  

750-772

 

528-529

Utah

 

734-749

Unknown

646-647

Georgia

 

773-899

 

252-260

  

0

Never valid numbers

667-675

  

666

 

530, 680

Nevada

 

900-999

 

261-267

Florida

   

589-595

    

766-772

    

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