CallataGuidesBusiness phone system for testing laboratories in Charleston, SC
Testing laboratories in the Charleston-North Charleston, SC metro area: 17 establishments in 2023, the local area codes, and what phone service costs a 26-person team.
- Establishments
- 17CBP 2023
- Employees
- 434mid-March 2023
- Per 100k residents
- 2.0U.S. 2.2
- Rank
- 82nd of 339areas by count
Testing laboratories in Charleston, SC by the numbers
The Census Bureau's 2023 County Business Patterns lists 17 establishments classified as Testing Laboratories (NAICS 541380) in the Charleston-North Charleston, SC metro area. They employed 434 people in mid-March and paid $30.7 million in annual payroll. By establishment count the area is 82nd out of 339 areas with published figures for testing laboratories.
Measured against its 870,000 residents (2024 estimate), the area has 2.0 testing laboratories per 100,000 people; the U.S. rate is 2.2, so Charleston, SC is 10.9% below the national figure. The average establishment here has 25.5 employees, compared with 21.2 nationally. Payroll per employee comes to $70,740, 6.0% below the national $75,284.
| Measure | Charleston, SC | South Carolina | United States |
|---|---|---|---|
| Establishments | 17 | 81 | 7,463 |
| Mid-March employees | 434 (moderate noise) | 1,732 | 158,265 |
| Annual payroll | $30,701,000 (moderate noise) | $113,501,000 | $11,914,875,000 |
| Employees per establishment | 25.5 | 21.4 | 21.2 |
| Payroll per employee | $70,740 | $65,532 | $75,284 |
| Establishments per 100,000 residents | 2.0 | 1.5 | 2.2 |
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.
How big testing laboratories in Charleston, SC are
Of the testing laboratories in Charleston, SC that had employees in March 2023, 69.2% had fewer than five (the U.S. share is 42.7%). 100.0% 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 | 9 | 69.2% | 42.7% |
| 5–9 employees | 4 | 30.8% | 18.9% |
| 10–19 employees | not published | — | 17.1% |
| 20–49 employees | not published | — | 12.8% |
| 50 or more employees | 0 | 0.0% | 8.6% |
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 testing laboratory in Charleston, SC has to catch
Testing labs serve contractors, manufacturers and property owners who need results on a schedule. Calls about sample drop-off, turnaround and results need quick routing. That holds for testing laboratories in Charleston, SC as much as anywhere.
A few of the calls that come in to testing laboratories in Charleston, SC:
- The lab calls a client about a sample issue.
- A client calls about results.
- A contractor calls to schedule material testing.
Texting clients
Labs text sample receipt and results-ready notices.
Team texting on Callata runs from your business number, so replies come from the practice or shop rather than someone's personal phone. It turns on after the one-time $49 carrier registration (10DLC) is approved.
Callata vs. per-seat pricing for testing laboratories in Charleston, SC
The average testing laboratory in Charleston, SC has 25.5 employees, so a 26-person team is a reasonable benchmark. Per-seat business phone plans bill every one of those people. At month-to-month list prices checked September 28, 2026, 26 users on RingCentral RingEX Core cost $780.00 a month and 26 on Ooma Office Pro cost $648.70. Callata comes to $519.00 a month for 26 users ($99 a month with 5 users included, then $20 per additional user), below both.
Over a year, that is $3,132 less than RingCentral for a testing laboratory in Charleston, SC 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 | $519.00 | $6,228.00 |
| Quo (Starter) | $19.00 per user | $494.00 | $5,928.00 |
| Nextiva (Core) | $23.00 per user | $598.00 | $7,176.00 |
| Ooma (Office Pro) | $24.95 per user | $648.70 | $7,784.40 |
| Dialpad (Standard) | $27.00 per user | $702.00 | $8,424.00 |
| RingCentral (RingEX Core) | $30.00 per user | $780.00 | $9,360.00 |
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.
Which area code to use in Charleston, SC
NANPA records place the exchanges of the area's named cities and towns in 2 area codes. 843 has the most, with 267 of 330 exchanges (81%). A local number lets clients in Charleston, SC call without dialing out of area. Callata includes up to 3 local numbers, and which numbers are open in an area code depends on carrier inventory when you choose.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 843 | 267 | Eastern | 1998 | 854 |
| 854 | 63 | Eastern | 2015 | 843 |
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 testing laboratories
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.
Porting a number you already use in Charleston, SC 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 testing laboratories are there in Charleston, SC?
Census County Business Patterns counted 17 testing laboratories in the Charleston-North Charleston, SC metro area in 2023. They employed 434 people in mid-March.
What does a business phone system cost for a 26-person testing laboratory?
At month-to-month list prices checked September 28, 2026, 26 users cost $780.00 a month on RingCentral RingEX Core and $648.70 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $519.00.
What area code should a testing laboratory in Charleston, SC use?
Area code 843 has the most assigned exchanges among the area's named places, followed by 854. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for a testing laboratory?
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.