CallataGuides

Get a local business phone number in Omro, WI

Omro's area codes, prefixes and carriers from NANPA records, and how to put a Omro number in front of your customers.

Area code
920 / 274
Exchanges
4NANPA-assigned
Carriers
4
Population
3,644Census 2024 est.

Omro area codes

Omro city is a Census place in Winnebago County, Wisconsin, with an estimated 3,644 residents in 2024. NANPA lists 4 exchanges for its rate center across 2 area codes; 920 has the most (3, 75%). 920 is part of an overlay with 274, so a new local number in Omro may carry any of those codes depending on which have numbers available. Omro is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 920 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Omro, WI
Area codeExchanges hereShareIn service sinceOverlay withTime zone
920375%1997274Central
274125%2023920Central

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Who holds Omro phone exchanges

4 carriers hold the 4 exchanges assigned to Omro's rate center. T-mobile USA, INC. has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Omro can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Omro, WI
Carrier (NANPA operating company)ExchangesShare
T-mobile USA, INC.125%
Onvoy, LLC - Wi125%
Wisconsin Bell INC125%
Charter Ip Enabled Services, LLC125%

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.

Omro phone prefixes

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Omro's rate center (OMRO). The earliest assignment date recorded in the file for these codes is 2007. 1 of the 4 were assigned in 2020 or later.

Prefixes assigned in Omro, WI
Area codePrefixes (NXX)
274209
920658, 685, 859

Source: NANPA utilized central office code file.

When Omro's exchanges were assigned

The table groups Omro's exchanges by the decade NANPA recorded them as assigned.

Omro, WI: exchanges by decade assigned
Decade assignedExchangesShare
2000s150%
2020s150%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

Rate centers and local calling in Omro

What a caller sees as "local" is the area code plus prefix. In Omro, those come from the OMRO rate center, as recorded by NANPA.

If your business already has a Omro number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Businesses around Omro

Omro is part of the Oshkosh-Neenah, WI metro area, home to 173,000 people in 2024. County Business Patterns counted 3,784 business establishments in the Oshkosh, WI metro area in 2023, employing 91,036 people. The largest sectors by establishment count are health care and social assistance (527), retail trade (453), and accommodation and food services (411).

Selected industries in the Oshkosh, WI metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Physician practices1333,16023.8
Limited-service restaurants1182,33919.8
Full-service restaurants1172,35520.1
Drinking places965625.9
Insurance agencies and brokerages642734.3
Landscaping services612784.6
Residential remodelers582364.1
Plumbing, heating and air-conditioning contractors565259.4

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Setting up a Omro business line

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in Omro is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

The comparison below uses 24 users, the rounded average establishment size in the Oshkosh, WI metro area. At list prices checked September 28, 2026, that is $598.80 a month on Ooma Office Pro and $720.00 on RingCentral RingEX Core. Callata comes to $479.00 a month for 24 users ($99 a month with 5 users included, then $20 per additional user), below both.

Monthly list price for a 24-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$479.00$5,748.00
Quo (Starter)$19.00 per user$456.00$5,472.00
Nextiva (Core)$23.00 per user$552.00$6,624.00
Ooma (Office Pro)$24.95 per user$598.80$7,185.60
Dialpad (Standard)$27.00 per user$648.00$7,776.00
RingCentral (RingEX Core)$30.00 per user$720.00$8,640.00

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 Omro, WI?

Omro has exchanges in 920 and 274; 920 has the most.

How many phone companies have exchanges in Omro?

4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Omro 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 Omro?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 24 users come to $479.00 a month. For comparison, 24 users on RingCentral RingEX Core list at $720.00 a month (checked September 28, 2026).