CallataGuidesGet a local business phone number in Olivia, MN
Olivia's area code, prefixes and carriers from NANPA records, and how to put a Olivia number in front of your customers.
- Area code
- 320
- Exchanges
- 5NANPA-assigned
- Carriers
- 3
- Population
- 2,306Census 2024 est.
Area codes in Olivia
With 2,306 residents in the Census 2024 estimate, Olivia sits in Renville County, Minnesota. All 5 exchanges NANPA lists for its rate center are in area code 320. Olivia is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 320 are dialed as seven digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 320 | 5 | 100% | 1996 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Olivia exchanges by carrier
3 carriers hold the 5 exchanges assigned to Olivia's rate center. New Cingular Wireless PCS, LLC - Il has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Olivia can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| New Cingular Wireless PCS, LLC - Il | 2 | 40% |
| Cellco Partnership d/b/a Verizon Wireless - MN | 2 | 40% |
| Qwest Corporation | 1 | 20% |
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.
Exchanges (NPA-NXX) assigned in Olivia
These are the central office codes NANPA records for Olivia. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2003. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 320 | 400, 522, 523, 579, 683 |
Source: NANPA utilized central office code file.
When Olivia's exchanges were assigned
The table groups Olivia's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 2 | 67% |
| 2010s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Olivia
What a caller sees as "local" is the area code plus prefix. In Olivia, those come from the OLIVIA rate center, as recorded by NANPA.
If your business already has a Olivia number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Olivia
Olivia is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 154,455 business establishments in Minnesota in 2023, employing 2,803,410 people. The largest sectors by establishment count are health care and social assistance (19,985), retail trade (17,727), and construction (17,568).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 3,879 | 87,230 | 22.5 |
| Limited-service restaurants | 3,848 | 75,564 | 19.6 |
| Offices of real estate agents and brokers | 3,247 | 6,341 | 2.0 |
| Insurance agencies and brokerages | 3,131 | 16,007 | 5.1 |
| Residential remodelers | 2,988 | 9,125 | 3.1 |
| Landscaping services | 2,397 | 13,696 | 5.7 |
| Law offices | 2,052 | 15,663 | 7.6 |
| Dental offices | 1,884 | 17,650 | 9.4 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Olivia
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
Porting a number you already use in Olivia 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 18 users, the rounded average establishment size in Minnesota. At list prices checked September 28, 2026, that is $449.10 a month on Ooma Office Pro and $540.00 on RingCentral RingEX Core. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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 Olivia, MN?
320. All exchanges NANPA lists for Olivia are in 320.
How many phone companies have exchanges in Olivia?
3, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Olivia 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 Olivia?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).