There are 6 zip codes in Darlington County, South Carolina. The most populated is 29550, located in Hartsville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
2955029,776Hartsville
2953220,000Darlington
290694,460Lamar
295404,419Darlington
295931,990Society Hill
2907914Lydia

Zip Codes in Darlington County, South Carolina by Population (2024)