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Missouri · Central Time

557 Area Code: St. Louis, MO

The 557 area code covers St. Louis, Florissant and University City in Missouri, on Central Time. Here is the current local time there, and whether you can legally place a solicitation call to a 557 number right now.

Current local time in the 557 area code

Current local time in the 557 area code

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Can you legally call a 557 number right now?

Checking…

DayLegal calling window in Missouri
Sunday8:00 AM-9:00 PM
Monday8:00 AM-9:00 PM
Tuesday8:00 AM-9:00 PM
Wednesday8:00 AM-9:00 PM
Thursday8:00 AM-9:00 PM
Friday8:00 AM-9:00 PM
Saturday8:00 AM-9:00 PM

Windows shown are the stricter of the federal TCPA/TSR rule (8 a.m.-9 p.m. local) and Missouri's own statute, in the called party's local time. Informational only, not legal advice. Check any number against the full TCPA calling hours calculator.

Area code 557 at a glance

StateMissouri
Principal citySt. Louis
Time zoneCentral Time
Overlay codes314
Weekday calling window8:00 AM-9:00 PM local
CountryUnited States

Cities in the 557 area code

These are the main population centers 557 serves. Smaller towns across the same Missouri region share the code.

  • St. Louis
  • Florissant
  • University City

Calling 557 numbers legally

Missouri has no calling-hour statute stricter than federal law, so the TCPA and the FTC's Telemarketing Sales Rule set the window: solicitation calls only between 8 a.m. and 9 p.m. in the called party's local time. Because the rule follows the called party, a 557 number is on Central Time regardless of where you dial from.

Ringless voicemail sits under the same rules as a live call, which is why TCPA compliance matters before you drop to a list. To check a whole list rather than one code, the phone number formatter tags every number with its state so you can segment sends by time zone.

Other Missouri area codes

314St. Louis417Springfield573Columbia636O'Fallon660Sedalia816Kansas City

Or browse every US area code.

FAQ

557 area code questions

557 is a US telephone area code serving Missouri, on Central Time. Its principal city is St. Louis, and it also covers Florissant and University City. It shares the same territory with overlay code 314.
Area code 557 is in the state of Missouri. It serves St. Louis, Florissant and University City, and its principal city is St. Louis.
The 557 area code is on Central Time (America/Chicago). The panel above shows the current local time there, updated live.
It depends on the local time in Missouri. Missouri has no calling-hour rule stricter than federal law, so the TCPA and the FTC's Telemarketing Sales Rule govern: solicitation calls are permitted only between 8 a.m. and 9 p.m. in the called party's local time. The live verdict above checks the current time against that window for you.
On weekdays, solicitation calls to Missouri numbers are permitted 8:00 AM to 9:00 PM local time. Sunday hours are 8:00 AM to 9:00 PM.
Area code 557 shares its geography with area code 314. Overlay codes cover the same towns, which is why ten-digit dialing is required there: a 557 number and a 314 number can sit on the same street.
Not by itself. 557 is a legitimate Missouri area code used by residents and businesses in St. Louis and Florissant. Scammers do spoof caller ID to show a local area code, because people answer local numbers more often, so treat an unexpected call asking for payment or personal details with suspicion regardless of the prefix.

Reaching St. Louis at scale?

VoiceDrop delivers ringless voicemails in your own AI-cloned voice and two-way SMS to Missouri lists, with calling-hour and DNC rules enforced automatically so every drop lands inside the legal window.

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