Area Code 557

Missouri (MO) • Saint Louis, Florissant, Bridgeton, Earth City, Hazelwood, Maryland Heights, Saint Ann • Central Time (CT)

What Stands Out

•Coverage: 1.1M people across 54 ZIP codes.
•Overlapping area codes: 314.
•Major cities: Saint Louis, Florissant, Bridgeton.

Spotlight: Coverage

Snapshot highlights for area code 557.

Income

58th

Home values

59th

Poverty rate

64th

Area Code Basics

Primary State

Missouri (MO)

States Served

Missouri (MO)

Major Cities

Saint Louis, Florissant, Bridgeton, Earth City, Hazelwood, Maryland Heights, Saint Ann

Time Zone(s)

Central Time (CT)

Est. Population

1.1M

ZIP Codes

Data accuracy & methodology

This report aggregates 2020–2024 ACS 5-year estimates and geographic overlays for orientation. Area-code service areas can cross ZIP/state boundaries and change over time; verify official assignments with NANPA for critical use.