CallataGuidesBusiness phone system for custom computer programming services firms in San Francisco, CA
Custom computer programming services firms in the San Francisco-Oakland-Fremont, CA metro area: 2,959 establishments in 2023, the local area codes, and what phone service costs a 20-person team.
- Establishments
- 2,959CBP 2023
- Employees
- 58,995mid-March 2023
- Per 100k residents
- 63.7U.S. 20.0
- Rank
- 4th of 563areas by count
How many custom computer programming services firms are in San Francisco, CA?
The Census Bureau's 2023 County Business Patterns lists 2,959 establishments classified as Custom Computer Programming Services (NAICS 541511) in the San Francisco-Oakland-Fremont, CA metro area. Together they reported 58,995 mid-March employees and $10.8 billion of payroll for the year. That ranks 4th of the 563 metro and micropolitan areas where Census published a count for this industry.
With 4.6 million residents in the Census 2024 estimate, that is 63.7 custom computer programming services firms per 100,000 people, 218.1% above the national rate of 20.0. Establishments average 19.9 employees, 34.0% above the U.S. average of 14.9. Payroll per employee comes to $183,106, 47.4% above the national $124,254.
| Measure | San Francisco, CA | California | United States |
|---|---|---|---|
| Establishments | 2,959 | 10,962 | 68,051 |
| Mid-March employees | 58,995 | 182,743 | 1,012,250 |
| Annual payroll | $10,802,324,000 | $30,639,498,000 | $125,775,835,000 |
| Employees per establishment | 19.9 | 16.7 | 14.9 |
| Payroll per employee | $183,106 | $167,664 | $124,254 |
| Establishments per 100,000 residents | 63.7 | 27.8 | 20.0 |
Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.
Establishment size: custom computer programming services firms in San Francisco, CA
Of the custom computer programming services firms in San Francisco, CA that had employees in March 2023, 67.5% had fewer than five (the U.S. share is 72.0%). 79.6% had fewer than ten. Small teams usually share the phone: the person who answers is often also serving a customer or doing the job, which is when calls get missed.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 1,996 | 67.5% | 72.0% |
| 5–9 employees | 360 | 12.2% | 10.1% |
| 10–19 employees | 231 | 7.8% | 7.0% |
| 20–49 employees | 187 | 6.3% | 5.9% |
| 50 or more employees | 185 | 6.3% | 4.9% |
Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.
Calls a custom software firm in San Francisco, CA has to catch
Small software shops juggle client meetings, support requests and sales calls with a team that is mostly heads-down building. A shared line with routing keeps support from interrupting developers while still answering clients. That holds for custom computer programming services firms in San Francisco, CA as much as anywhere.
Calls a custom software firm in San Francisco, CA might handle in a typical week include:
- A prospect calls to discuss a new app project.
- A partner agency calls about a subcontract.
- A client calls to report a bug in production.
Calls after closing time
Production issues can come in after hours, so an urgent flag on voicemail helps the on-call developer.
With business-hours routing, calls after closing can go to transcribed voicemail or an optional AI receptionist instead of ringing an empty room.
Callata vs. per-seat pricing for custom computer programming services firms in San Francisco, CA
The average custom software firm in San Francisco, CA has 19.9 employees, so a 20-person team is a reasonable benchmark. On a per-user plan that headcount sets the bill: $499.00 a month on Ooma Office Pro or $600.00 on RingCentral RingEX Core at list price (checked September 28, 2026). On Callata the same 20 people cost $399.00 a month, less than either per-seat plan.
The annual difference against RingCentral's monthly list price comes to $2,412. Some vendors discount annual contracts; the table shows month-to-month prices.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $399.00 | $4,788.00 |
| Quo (Starter) | $19.00 per user | $380.00 | $4,560.00 |
| Nextiva (Core) | $23.00 per user | $460.00 | $5,520.00 |
| Ooma (Office Pro) | $24.95 per user | $499.00 | $5,988.00 |
| Dialpad (Standard) | $27.00 per user | $540.00 | $6,480.00 |
| RingCentral (RingEX Core) | $30.00 per user | $600.00 | $7,200.00 |
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.
Getting a local number in San Francisco, CA
NANPA records place the exchanges of the area's named cities and towns in 6 area codes. 415 has the most, with 628 of 1,734 exchanges (36%). Callata's plan includes up to 3 local numbers; you can pick them in the area codes your clients recognize, subject to carrier inventory, or port the number you already have for free.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 415 | 628 | Pacific | 1947 | 628 |
| 925 | 514 | Pacific | 1998 | none |
| 650 | 268 | Pacific | 1997 | none |
| 510 | 170 | Pacific | 1991 | 341 |
| 628 | 131 | Pacific | 2015 | 415 |
| 341 | 23 | Pacific | 2019 | 510 |
Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.
Setting up Callata for a custom software firm in San Francisco, CA
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 Francisco, CA, 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.
Frequently asked questions
How many custom computer programming services firms are there in San Francisco, CA?
Census County Business Patterns counted 2,959 custom computer programming services firms in the San Francisco-Oakland-Fremont, CA metro area in 2023. They employed 58,995 people in mid-March.
What does a business phone system cost for a 20-person custom software firm?
At month-to-month list prices checked September 28, 2026, 20 users cost $600.00 a month on RingCentral RingEX Core and $499.00 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $399.00.
What area code should a custom software firm in San Francisco, CA use?
Area code 415 has the most assigned exchanges among the area's named places, followed by 925 and 650. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for a custom software firm?
Yes. Callata's optional AI agents can answer when the team is busy or closed, take a message, text, email or transfer the call. They disclose that they are AI and are billed from prepaid AI minutes at $0.25 per minute.