Get a local business phone number in Eureka, KS

Eureka area codes

Eureka, in Greenwood County, Kansas, had a Census-estimated population of 2,249 in July 2024. All 4 exchanges NANPA lists for its rate center are in area code 620. Eureka is in the Central and Mountain time zone.

According to NANPA's dialing-plan data, local calls within 620 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Eureka exchanges by carrier

4 carriers hold the 4 exchanges assigned to Eureka's rate center. Onvoy, LLC - KS has the most, with 1. 4 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.

Exchanges (NPA-NXX) assigned in Eureka

These are the central office codes NANPA records for Eureka. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 1 of the 4 were assigned in 2020 or later.

When Eureka's exchanges were assigned

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

Rate centers and local calling in Eureka

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

New local numbers are drawn from carrier inventory, so the exact 620 numbers available change over time; porting an existing number is free.

Businesses around Eureka

Eureka is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 76,139 business establishments in Kansas in 2023, employing 1,248,825 people. The largest sectors by establishment count are retail trade (9,580), health care and social assistance (9,075), and other services (except public administration) (8,071).

A Eureka number on Callata

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 Eureka 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.

A 16-person team is the benchmark here, the rounded average establishment size in Kansas. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $480.00 a month and Ooma Office Pro $399.20. Callata comes to $319.00 a month for 16 users ($99 a month with 5 users included, then $20 per additional user), below both.