Hillandale, Maryland

Nearest ZIP codes to Hillandale

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

Area codes for Hillandale

• Area code 301

  In service since 1947. Shares its area with 227 and 240. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 227

  In service since June 14, 2023. Shares its area with 240 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 240

  In service since June 1, 1997. Shares its area with 227 and 301. 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

Hillandale is in the Eastern Time zone.

Towns near Hillandale

• Burnt Mills2.2 km (1.4 mi)
• White Oak2.2 km (1.4 mi)
• Four Corners3 km (1.9 mi)
• Adelphi3.3 km (2.1 mi)
• Silver Spring4 km (2.5 mi)
• Calverton4.1 km (2.5 mi)
• Langley Park4.1 km (2.5 mi)
• Kemp Mill4.4 km (2.7 mi)