557 phone numbers available to buy right now

Live inventory of St. Louis, MO (557) numbers, pulled directly from our carrier network and last updated September 20, 2026 at 8:47 AM UTC. There is no per-number price or markup: every number below is included with a Phone2 plan from $7/month on annual billing, with calling, SMS, a team inbox, and mobile + desktop apps. Activation is instant.

(557) 204-6015VoiceSMSFax
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(557) 204-6578VoiceSMSFax
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(557) 200-0409VoiceSMSFax
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(557) 204-6490VoiceSMSFax
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(557) 200-0273VoiceSMSFax
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(557) 200-0339VoiceSMSFax
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(557) 204-6202VoiceSMSFax
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(557) 204-6484VoiceSMSFax
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(557) 204-6434VoiceSMSFax
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(557) 204-6447VoiceSMSFax
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(557) 204-6449VoiceSMSFax
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(557) 204-6474VoiceSMSFax
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(557) 204-6454VoiceSMSFax
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(557) 204-6482VoiceSMSFax
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(557) 204-6430VoiceSMSFax
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(557) 204-6483VoiceSMSFax
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(557) 204-6551VoiceSMSFax
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(557) 204-6448VoiceSMSFax
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(557) 204-6486VoiceSMSFax
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(557) 204-6544VoiceSMSFax
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(557) 204-6485VoiceSMSFax
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(557) 204-6455VoiceSMSFax
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(557) 204-6418VoiceSMSFax
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(557) 204-6512VoiceSMSFax
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(557) 204-6443VoiceSMSFax
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(557) 204-6450VoiceSMSFax
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(557) 204-6548VoiceSMSFax
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(557) 204-6503VoiceSMSFax
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(557) 204-6464VoiceSMSFax
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(557) 204-6476VoiceSMSFax
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Search all 557 numbers About the 557 area code

How buying a 557 number works

Pick any number above, or search the full 557 inventory.
Sign up for a Phone2 plan (from $7/month on annual billing). The number is included, with no one-time purchase fee.
Start calling and texting immediately from the mobile, desktop, or web app.

Unlike number marketplaces that sell 557 numbers for $99 or more one-time, Phone2 includes the number with the phone service itself. 30-day refund guarantee, and you can port the number out any time.