Get a local business phone number in Nassau, NY

What area code is Nassau, NY?

Nassau, in Rensselaer County, New York, had a Census-estimated population of 4,510 in July 2024. All 2 exchanges NANPA lists for its rate center are in area code 518. 518 is part of an overlay with 838, so a new local number in Nassau may carry any of those codes depending on which have numbers available. Nassau is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 518 are dialed as ten digits (area code plus number) and toll calls as ten digits (area code plus number).

Who holds Nassau phone exchanges

2 carriers hold the 2 exchanges assigned to Nassau's rate center. Taconic Tel. Corp. has the most, with 1. 1 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.

Local prefixes for Nassau

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Nassau. None were assigned in 2020 or later.

What makes a number local to Nassau

NANPA ties every exchange to a rate center. For Nassau that is NASSAU, so a number from one of these exchanges reads as local to people in and around Nassau.

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

Businesses around Nassau

Nassau is part of the Albany-Schenectady-Troy, NY metro area, home to 913,000 people in 2024. County Business Patterns counted 21,425 business establishments in the Albany, NY metro area in 2023, employing 362,110 people. The largest sectors by establishment count are retail trade (2,879), professional, scientific, and technical services (2,576), and health care and social assistance (2,450).

A Nassau 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.

If you already have a number in Nassau, 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.

A 17-person team is the benchmark here, the rounded average establishment size in the Albany, NY metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $510.00 a month and Ooma Office Pro $424.15. On Callata the same 17 people cost $339.00 a month, less than either per-seat plan.