Zip Area Code

Eldersburg, Maryland

No ZIP code carries the name of Eldersburg, Maryland, in Howard County; the nearest ZIP codes are 21104 and 21784, in area code 410, with overlays 443 and 667.

Nearest ZIP
21104, 21784
Area codes
410, 443, 667
Time zone
Eastern Time
Coordinates
39.4042, -76.9526

Nearest ZIP codes to Eldersburg

These are the ZIP codes nearest to Eldersburg, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
21104MarriottsvilleHoward County410, 443, 667
21784SykesvilleCarroll County410, 443, 667

Area codes for Eldersburg

  • Area code 410

    In service since October 6, 1991. Shares its area with 443 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 443

    In service since June 1, 1997. Shares its area with 410 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 667

    In service since March 24, 2012. Shares its area with 410 and 443. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Eldersburg is in the Eastern Time zone.

Towns near Eldersburg

Local numbers in area code 410

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