North American Numbers Source-cited · ownership disclosed
Area code
220
In service
United States · since 2015

Central/Southeastern Ohio (overlay)

All-service overlay covering the same central and southeastern Ohio territory as area code 740. Implemented in 2015.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Central/Southeastern Ohio (overlay)
Type
geographic
Status
in service
In service since
2015
Projected exhaust
2059 Q2

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 220 is

Central and southeastern Ohio, coextensive with area code 740.

Communities served wholly or partly by 220:

NewarkZanesvilleChillicotheAthensMariettaLancaster

Serves the entire 740 footprint; city list is representative.

B · Relationships

How it relates to other codes

The codes 220 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2015 740 Central/Southeastern Ohio All-service overlay sharing the identical 740 numbering plan area.
What's changing. Overlay of 740 since April 22, 2015; ten-digit dialing required.
C · History

How 220 got here

2015-04-22
Activated as an all-service overlay of 740, requiring ten-digit dialing.
Source: Wikipedia: Area codes 740 and 220
D · Capacity

How full it is

Prefixes assigned
156
Prefixes available
644
Thousands-blocks assigned
1,065

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 220 with another code →
Sources
Wikipedia ↗
Area codes 740 and 220
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.