San Antonio, TX business phone guide

San Antonio, TX at a glance

The San Antonio-New Braunfels, TX metro area covers 8 counties in Texas and had 2.8 million residents in July 2024, up 8.0% since April 2020. The U.S. population grew 2.6% over the same period. Bexar County, TX is the most populous, with 2.1 million people. By population it ranks 24th of the 925 metro and micropolitan areas and 30th by business establishments.

Establishments and employment in San Antonio, TX

County Business Patterns counted 52,088 establishments in the area in 2023, employing 980,355 people in mid-March with $55.9 billion in annual payroll. That is an average of 18.8 employees per establishment. 51.7% of establishments with employees had fewer than five people. By establishment count, the largest sectors are health care and social assistance (6,874), retail trade (6,443), and professional, scientific, and technical services (5,921).

Business density and team size in San Antonio, TX

San Antonio, TX has 18.9 business establishments per 1,000 residents, 23.3% below the U.S. figure of 24.6. Establishments average 18.8 employees against 16.7 nationally, and payroll per employee is $57,038 (16.5% below the U.S. $68,342). 51.7% of establishments with employees have fewer than five people (U.S.: 55.5%), while 6.4% have 50 or more. Because a handful of large employers lift the average, the share of very small establishments says more about who buys a small-business phone system.

Small-business industries in San Antonio, TX

Of the 141 industries these guides cover, 141 have a published Census count in San Antonio, TX. The largest are limited-service restaurants (2,051), physician practices (1,981), and full-service restaurants (1,828). Relative to population, medical laboratories are the most over-represented: 8.5 per 100,000 residents against 4.9 nationally.

Area codes in San Antonio, TX

The area's named cities and towns have 1,082 NANPA-assigned exchanges across 3 area codes; 210 has the most (72%). A local number in the code your customers know is the simplest signal that you are nearby; Callata's plan includes up to 3.

Local numbers by city

Pages for 21 cities and towns in the area list their area codes, prefixes and carriers.

Phone costs for a typical San Antonio, TX business

A 19-person team is the benchmark here, the rounded average establishment size in San Antonio, TX. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $570.00 a month and Ooma Office Pro $474.05. On Callata the same 19 people cost $379.00 a month, less than either per-seat plan.

Callata in San Antonio, TX

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 San Antonio, TX, 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.