Get a local business phone number in Lockhart, TX

Lockhart area codes

Lockhart, in Caldwell County, Texas, had a Census-estimated population of 17,166 in July 2024. NANPA lists 17 exchanges for its rate center across 2 area codes; 512 has the most (11, 65%). 512 is part of an overlay with 737, so a new local number in Lockhart may carry any of those codes depending on which have numbers available. Lockhart is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 512 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Lockhart exchanges by carrier

11 carriers hold the 17 exchanges assigned to Lockhart's rate center. Southwestern Bell has the most, with 4. 16 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.

Lockhart phone prefixes

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Lockhart's rate center (LOCKHART). The earliest assignment date recorded in the file for these codes is 2001. 6 of the 17 were assigned in 2020 or later.

When Lockhart's exchanges were assigned

Assignment dates show when each block of Lockhart numbers was added to the local supply.

How local numbers work in Lockhart

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Lockhart's numbers are rated to the LOCKHART rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Lockhart number.

New local numbers are drawn from carrier inventory, so the exact 512 numbers available change over time; porting an existing number is free.

The local business market

Lockhart is part of the Austin-Round Rock-San Marcos, TX metro area, home to 2.6 million people in 2024. County Business Patterns counted 66,280 business establishments in the Austin, TX metro area in 2023, employing 1,042,004 people. The largest sectors by establishment count are professional, scientific, and technical services (12,232), health care and social assistance (7,125), and retail trade (6,650).

Business phone service in Lockhart

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 Lockhart, 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.

The comparison below uses 16 users, the rounded average establishment size in the Austin, TX metro area. At list prices checked September 28, 2026, that is $399.20 a month on Ooma Office Pro and $480.00 on RingCentral RingEX Core. On Callata the same 16 people cost $319.00 a month, less than either per-seat plan.