CallataGuidesBusiness phone system for other computer related services firms in California
1,524 other computer related services firms operated in California in 2023. Where they are, how big their teams are, and what phone service costs them.
- Establishments
- 1,524CBP 2023
- Employees
- 17,057mid-March 2023
- Per 100k residents
- 3.9U.S. 3.9
- State rank
- 1st of 51by count
How many other computer related services firms operate in California
The Census Bureau counted 1,524 other computer related services firms in California in its 2023 County Business Patterns (NAICS 541519). They employed 17,057 people in mid-March and reported $2.3 billion in annual payroll. That is the 1st highest count among the 51 states and DC with published figures. Other computer related services firms make up 0.15% of the 1,029,689 business establishments in the state.
Per 100,000 residents (2024 estimate) California has 3.9 other computer related services firms, in line with the national rate of 3.9. The average establishment has 11.2 employees against 12.7 nationally. Payroll per employee is $136,207, 10.1% above the U.S. figure of $123,684.
| Measure | California | United States |
|---|---|---|
| Establishments | 1,524 | 13,275 |
| Mid-March employees | 17,057 | 168,654 |
| Annual payroll | $2,323,287,000 | $20,859,777,000 |
| Employees per establishment | 11.2 | 12.7 |
| Payroll per employee | $136,207 | $123,684 |
| Establishments per 100,000 residents | 3.9 | 3.9 |
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.
Other computer related services firms by metro area in California
Census published computer services firm counts for 20 metro or micropolitan areas that include part of California. The largest is Los Angeles, CA, with 479 establishments. Single-state metro and micropolitan areas account for 98% of the statewide total; the rest are outside any published area or in areas Census suppressed.
| Area | Establishments | Employees | Per 100k residents |
|---|---|---|---|
| Los Angeles, CA | 479 | 5,316 | 3.7 |
| San Francisco, CA | 383 | 4,866 | 8.2 |
| San Jose, CA | 201 | 2,780 | 10.1 |
| San Diego, CA | 127 | 864 | 3.8 |
| Sacramento, CA | 100 | — | 4.1 |
| Riverside, CA | 64 | — | 1.3 |
| Oxnard, CA | 24 | 201 | 2.9 |
| Stockton, CA | 21 | 95 | 2.6 |
| Santa Rosa, CA | 19 | 72 | 3.9 |
| Fresno, CA | 18 | 48 | 1.5 |
| Santa Maria, CA | 12 | 96 | 2.7 |
| San Luis Obispo, CA | 10 | 43 | 3.5 |
| Bakersfield, CA | 9 | 78 | 1.0 |
| Santa Cruz, CA | 9 | 35 | 3.4 |
| Vallejo, CA | 5 | 38 | 1.1 |
| Modesto, CA | 3 | — | 0.5 |
| Salinas, CA | 3 | — | 0.7 |
| Redding, CA | 3 | 3 | 1.7 |
| Napa, CA | 3 | — | 2.3 |
| Truckee, CA | 3 | 7 | 2.9 |
Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.
Team sizes at other computer related services firms in California
78.1% of California's other computer related services firms with employees had fewer than five people in March 2023, compared with 77.4% nationally. 86.2% had fewer than ten. At that size the phone is shared, so routing (who rings, when, and what happens after hours) matters more than the number of desk phones.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 1,189 | 78.1% | 77.4% |
| 5–9 employees | 123 | 8.1% | 8.2% |
| 10–19 employees | 86 | 5.7% | 5.3% |
| 20–49 employees | 62 | 4.1% | 4.5% |
| 50 or more employees | 62 | 4.1% | 4.6% |
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 computer services firm in California has to catch
Firms offering computer installation, data recovery and similar services depend on inbound calls from people with an immediate problem. Answering quickly and setting expectations wins the job.
A few of the calls that come in to other computer related services firms in California:
- A caller asks whether data can be recovered from a failed drive.
- The firm calls a client when a job is complete.
- A caller asks about pricing.
What other computer related services firms text about
Texts confirming appointments and job completion are common.
Texting from a local number in California requires carrier registration (10DLC), a one-time $49 fee on Callata.
What a phone system costs a computer services firm in California
Other computer related services firms in California average 11.2 employees, so the comparison uses an 11-person team. Per-seat business phone plans bill every one of those people. At month-to-month list prices checked September 28, 2026, 11 users on RingCentral RingEX Core cost $330.00 a month and 11 on Ooma Office Pro cost $274.45. Callata comes to $219.00 a month for 11 users ($99 a month with 5 users included, then $20 per additional user), below both.
Over a year, that is $1,332 less than RingCentral for a computer services firm in California of that size. Annual contracts lower some competitors' prices, so compare the plan you would actually sign.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $219.00 | $2,628.00 |
| Quo (Starter) | $19.00 per user | $209.00 | $2,508.00 |
| Nextiva (Core) | $23.00 per user | $253.00 | $3,036.00 |
| Ooma (Office Pro) | $24.95 per user | $274.45 | $3,293.40 |
| Dialpad (Standard) | $27.00 per user | $297.00 | $3,564.00 |
| RingCentral (RingEX Core) | $30.00 per user | $330.00 | $3,960.00 |
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.
Area codes in California
California has 41 geographic area codes in service according to NANPA. Callata includes up to 3 local numbers, so a computer services firm can hold a number in more than one of them.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 408 | 787 | Pacific | 1959 | 669 |
| 213 | 786 | Pacific | 1947 | 323, 738 |
| 310 | 786 | Pacific | 1991 | 424 |
| 323 | 786 | Pacific | 1998 | 213, 738 |
| 714 | 786 | Pacific | 1951 | 657 |
| 805 | 786 | Pacific | 1957 | 820 |
| 909 | 786 | Pacific | 1992 | 840 |
| 415 | 785 | Pacific | 1947 | 628 |
| 510 | 785 | Pacific | 1991 | 341 |
| 559 | 785 | Pacific | 1998 | 357 |
| 619 | 785 | Pacific | 1982 | 858 |
| 707 | 785 | Pacific | 1959 | 369 |
| 760 | 785 | Pacific | 1997 | 442 |
| 916 | 785 | Pacific | 1947 | 279 |
| 209 | 784 | Pacific | 1958 | 350 |
| 530 | 782 | Pacific | 1997 | 837 |
| 818 | 781 | Pacific | 1984 | 747 |
| 949 | 745 | Pacific | 1998 | none |
| 626 | 734 | Pacific | 1997 | none |
| 650 | 716 | Pacific | 1997 | none |
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.
How Callata works for other computer related services firms in California
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
Porting a number you already use in California 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.
Frequently asked questions
How many other computer related services firms are in California?
1,524 in 2023, according to Census County Business Patterns. They employed 17,057 people in mid-March.
Which California metro area has the most other computer related services firms?
Los Angeles, CA, with 479 establishments in 2023.
What does a phone system cost an 11-person computer services firm?
$330.00 a month on RingCentral RingEX Core or $274.45 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $219.00 on Callata ($99 a month with 5 users included, then $20 per additional user).
Do I need to register to text customers from a California number?
Yes. US carriers require business texting from local numbers to be registered (10DLC). On Callata the registration is a one-time $49 fee, and texting turns on once it is approved.