Connecticut · Eastern Time

Hartford, CT Area Codes

Hartford is served by 2 area codes (860, 959). Here's which is original, which are overlays, and how to pick one for a new local number.

Last updated October 1, 2026

Area codes serving Hartford

Hartford sits in Connecticut, part of the Northeast region and the Eastern Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 860, 959.

The original code is 860 (in service since 1995). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.

CodeArea servedIn service
860Northern, central and eastern Connecticut including Hartford, New Britain and New LondonAugust 28, 1995
959Northern, central and eastern Connecticut including Hartford, New Britain and New LondonAugust 30, 2014

Nearby cities sharing these area codes

  • New Britain
  • West Hartford
  • Bristol
  • Manchester
  • Middletown
  • Norwich
  • Enfield
  • Glastonbury
  • Southington
  • Torrington
  • New London
  • Groton
  • Vernon

How to pick an area code for a new number

When you activate a new line in Hartford, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 860), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.

Dialing in Hartford

Because Hartford is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Connecticut, visit the Connecticut area codes page.

Quick answers

Hartford area code FAQ

What area codes does Hartford use?

Hartford, CT is served by 2 area codes: 860, 959.

Which is the original Hartford area code?

860 is the original code for Hartford, in service since 1995; the others were added later for more numbers.

Do I need to dial the area code in Hartford?

Yes. With multiple overlapping codes, 10-digit dialing is required for every call in this area.