CallataGuidesGet a local business phone number in Winterset, IA
Winterset's area code, prefixes and carriers from NANPA records, and how to put a Winterset number in front of your customers.
- Area code
- 515
- Exchanges
- 17NANPA-assigned
- Carriers
- 9
- Population
- 5,421Census 2024 est.
What area code is Winterset, IA?
With 5,421 residents in the Census 2024 estimate, Winterset sits in Madison County, Iowa. All 17 exchanges NANPA lists for its rate center are in area code 515. Winterset is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 515 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 515 | 17 | 100% | 1947 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Winterset phone exchanges
9 carriers hold the 17 exchanges assigned to Winterset's rate center. United States Cellular - Ia has the most, with 9. 17 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| United States Cellular - Ia | 9 | 53% |
| Commio, LLC | 1 | 5.9% |
| Bandwidth.com CLEC, LLC - Ia | 1 | 5.9% |
| Qwest Corporation | 1 | 5.9% |
| Cellco Partnership d/b/a Verizon Wireless - Ia | 1 | 5.9% |
| New Cingular Wireless PCS, LLC - Il | 1 | 5.9% |
| MCC Telephony of Iowa, LLC - Ia | 1 | 5.9% |
| Level 3 Communications, LLC - Ia | 1 | 5.9% |
| Omnitel Communications, INC. - Ia | 1 | 5.9% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Local prefixes for Winterset
These are the central office codes NANPA records for Winterset. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2010. 11 of the 17 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 515 | 340, 384, 462, 468, 474, 493, 705, 728, 739, 801, 804, 806, 810, 818, 819, 841, 905 |
Source: NANPA utilized central office code file.
When Winterset's exchanges were assigned
Assignment dates show when each block of Winterset numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2010s | 4 | 27% |
| 2020s | 11 | 73% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Winterset
NANPA ties every exchange to a rate center. For Winterset that is WINTERSET, so a number from one of these exchanges reads as local to people in and around Winterset.
If your business already has a Winterset number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Winterset
Winterset is part of the Des Moines-West Des Moines, IA metro area, home to 754,000 people in 2024. County Business Patterns counted 18,946 business establishments in the Des Moines, IA metro area in 2023, employing 364,757 people. The largest sectors by establishment count are retail trade (2,187), professional, scientific, and technical services (2,098), and health care and social assistance (2,060).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 531 | 11,950 | 22.5 |
| Limited-service restaurants | 524 | 10,539 | 20.1 |
| Offices of real estate agents and brokers | 474 | 948 | 2.0 |
| Insurance agencies and brokerages | 425 | 3,009 | 7.1 |
| Law offices | 364 | 2,502 | 6.9 |
| Landscaping services | 298 | 3,334 | 11.2 |
| Residential remodelers | 278 | 848 | 3.1 |
| Physician practices | 275 | 7,439 | 27.1 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Winterset business line
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
If you already have a number in Winterset, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Des Moines, IA metro area, 19 users on RingCentral RingEX Core come to $570.00 a month and on Ooma Office Pro $474.05, at month-to-month list prices checked September 28, 2026. On Callata the same 19 people cost $379.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Winterset, IA?
515. All exchanges NANPA lists for Winterset are in 515.
How many phone companies have exchanges in Winterset?
9, holding 17 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Winterset business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Winterset?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).