---
title: "Area code 937: Ohio, United States"
url: "https://lookvalid.com/area-code/937.md"
canonical_url: "https://lookvalid.com/area-code/937"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 937 serves Ohio, United States. Number formats, numbering rules, a live phone validator and the other codes in Ohio."
---

# Area code 937: Ohio, United States

Area code 937 serves Ohio, United States. Number formats, numbering rules, a live phone validator and the other codes in Ohio.

NANPA lists 780 central office codes (prefixes) in use in area code 937, held by 48 holders across 123 rate centers.
Ohio Bell Tel holds the most prefixes, 159 (20%). 70% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 2,679 complaints on file for 2,308 numbers in 937, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1996-09-28
- Time zone: Eastern (E)
- Assigned overlays: 326 (2020-03-08)
- Prefixes in use: 780
- Pooled prefixes: 544 (70%)
- Rate centers: 123
- Companies holding prefixes: 48
- Assignment dates on file: 2001-01-24 to 2024-04-04 (289 prefixes)
- ZIP codes in its places: 116

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| DAYTON | 251 | 32% |
| SPRINGFLD | 42 | 5% |
| BEAVERCREK | 19 | 2% |
| XENIA | 19 | 2% |
| BELLEFNTAN | 18 | 2% |
| MARYSVILLE | 17 | 2% |
| SIDNEY | 17 | 2% |
| WILMINGTON | 17 | 2% |
| 115 other rate centers | 380 | 49% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Ohio Bell Tel | 159 | 20% |
| New Cingular Wireless PCS | 73 | 9% |
| T-Mobile USA | 64 | 8% |
| Verizon Wireless | 61 | 8% |
| Brightspeed Of Northwest Ohio | 55 | 7% |
| Frontier North | 53 | 7% |
| 42 other carriers | 315 | 40% |

A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company.

## History

- 1947-01-01: Area code 513, named as the parent of 937 in the NANPA report, was in service.
- 1996-09-28: Area code 937 went into service.
- 2020-03-08: Area code 326 went into service as an overlay in the same area as 937.

## Nearest area codes

The area codes closest to 937, measured between the centers of the ZIP code places they serve, are 283 (about 44 miles), 513 (about 44 miles), 380 (about 59 miles), 614 (about 59 miles) and 220 (about 95 miles).

## ZIP codes

116 ZIP codes fall in places that have a rate center in this area code. The places with the most are Dayton, OH (43 ZIP codes), Marysville, OH (2 ZIP codes) and Sidney, OH (2 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes.

## Complaints on file

2,679 complaints for 2,308 numbers. Numbers whose latest complaint falls in each year:

- 2023: 149
- 2024: 130
- 2025: 127

## Questions

### Where is area code 937?

NANPA assigns area code 937 to Ohio, United States.

### In which state does area code 937 sit?

Ohio. 937 is one of 15 area codes the NANPA table assigns to the state.

### Which places does area code 937 cover?

The places with the most ZIP codes among the rate centers in 937 are Dayton, OH, Marysville, OH and Sidney, OH. The rate center list on this page shows all of them.

### Who owns area code 937?

NANPA assigns area codes. Within 937, Ohio Bell Tel holds the most prefixes, 159 prefixes or 20%.

### Which time zone does 937 use?

The NANPA NPA report lists the time zone for 937 as Eastern (E).

### What year did 937 enter service?

The NANPA NPA report gives an in-service date of 1996-09-28, so 937 has been in use since 1996.

### Does area code 937 have an overlay?

Yes. 326 (in service 2020-03-08) shares the same area with 937, so numbers from all of them are local to each other.

### Which area codes are nearest to 937?

The area codes closest to 937, measured between the centers of the ZIP code places they serve, are 283 (about 44 miles), 513 (about 44 miles), 380 (about 59 miles), 614 (about 59 miles) and 220 (about 95 miles).

### How many prefixes does area code 937 have?

NANPA's report dated 2026-10-17 lists 780 prefixes in service in 937, spread over 123 rate centers and 48 holders.

### Are there complaints about 937 numbers?

The FCC data on file has 2,679 complaints for 2,308 numbers in 937. They are unverified consumer reports. A number with no complaints on file is not proven safe.

Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).