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Editorial Team
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Editorial Team
Asked: May 18, 20262026-05-18T08:20:59+00:00 2026-05-18T08:20:59+00:00

I need to create RegEx for two different states and I am having some

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I need to create RegEx for two different states and I am having some trouble. Here are the requirements; one is for Washington DC and and the other for Delaware:

1) DISTRICT OF COLUMBIA (DC)
– Format: 9 Numeric (SSN) or 7 Numeric

2) DELAWARE (DE)
– Format: 1-7 Numeric

The RegEx I have for DC is ^(\d{7}|(\d{9})$ which doesnt seem to work.

I think I have the one for Delaware ^(\d{1,7})$

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  1. Editorial Team
    Editorial Team
    2026-05-18T08:20:59+00:00Added an answer on May 18, 2026 at 8:20 am

    If you’re still having problems try this. I moved the parenthesis around to enclose both conditions at once.

    ^(\d{7}|\d{9})$
    
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