CallataGuidesBusiness phone system for human resources consulting firms in St. Louis, MO-IL
Human resources consulting firms in the St. Louis, MO-IL metro area: 72 establishments in 2023, the local area codes, and what phone service costs a 15-person team.
- Establishments
- 72CBP 2023
- Employees
- 1,082mid-March 2023
- Per 100k residents
- 2.6U.S. 2.5
- Rank
- 27th of 232areas by count
How many human resources consulting firms are in St. Louis, MO-IL?
County Business Patterns counts 72 human resources consulting firms (NAICS 541612, Human Resources Consulting Services) in the St. Louis, MO-IL metro area for 2023. They employed 1,082 people in mid-March and paid $113.6 million in annual payroll. By establishment count the area is 27th out of 232 areas with published figures for human resources consulting firms.
Measured against its 2.8 million residents (2024 estimate), the area has 2.6 human resources consulting firms per 100,000 people; the U.S. rate is 2.5, so St. Louis, MO-IL is 2.1% above the national figure. The average establishment here has 15.0 employees, compared with 15.7 nationally. Payroll per employee comes to $105,009, 9.4% above the national $96,006.
| Measure | St. Louis, MO-IL | Missouri | United States |
|---|---|---|---|
| Establishments | 72 | 117 | 8,526 |
| Mid-March employees | 1,082 (moderate noise) | 1,357 (moderate noise) | 134,151 |
| Annual payroll | $113,620,000 (moderate noise) | $130,573,000 (moderate noise) | $12,879,341,000 |
| Employees per establishment | 15.0 | 11.6 | 15.7 |
| Payroll per employee | $105,009 | $96,222 | $96,006 |
| Establishments per 100,000 residents | 2.6 | 1.9 | 2.5 |
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.
Team sizes at human resources consulting firms in St. Louis, MO-IL
Of the human resources consulting firms in St. Louis, MO-IL that had employees in March 2023, 76.8% had fewer than five (the U.S. share is 74.5%). 87.0% had fewer than ten. For a business of a few people, phone coverage is a staffing question as much as a technology one: someone has to be free to pick up, or the call needs somewhere sensible to go.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 53 | 76.8% | 74.5% |
| 5–9 employees | 7 | 10.1% | 9.8% |
| 10–19 employees | 3 | 4.3% | 6.0% |
| 20–49 employees | 6 | 8.7% | 4.8% |
| 50 or more employees | 0 | 0.0% | 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.
Why the phone matters for human resources consulting firms in St. Louis, MO-IL
HR consultants are often the first call when an employer faces a personnel issue, so clients expect a quick response. Those calls can involve sensitive information that should go to the right person directly.
Typical inbound and outbound calls for human resources consulting firms in St. Louis, MO-IL:
- The firm calls a client to schedule a training session.
- A prospect calls about outsourced HR support.
- A business owner calls about an employee complaint.
Texting clients
Firms text scheduling details while keeping personnel matters to calls and secure documents.
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 human resources consulting firms in St. Louis, MO-IL
The average HR consulting firm in St. Louis, MO-IL has 15.0 employees, so a 15-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, 15 users on RingCentral RingEX Core cost $450.00 a month and 15 on Ooma Office Pro cost $374.25. Callata comes to $299.00 a month for 15 users ($99 a month with 5 users included, then $20 per additional user), below both.
Over a year, that is $1,812 less than RingCentral for a HR consulting firm in St. Louis, MO-IL 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 | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
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 St. Louis, MO-IL
NANPA records place the exchanges of the area's named cities and towns in 8 area codes. 314 has the most, with 723 of 1,483 exchanges (49%). A local number lets clients in St. Louis, MO-IL 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 |
|---|---|---|---|---|
| 314 | 723 | Central | 1947 | 557 |
| 618 | 324 | Central | 1947 | 730 |
| 636 | 308 | Central | 1999 | none |
| 557 | 71 | Central | 2022 | 314 |
| 730 | 30 | Central | 2023 | 618 |
| 217 | 14 | Central | 1947 | 447 |
| 573 | 11 | Central | 1996 | 235 |
| 447 | 2 | Central | 2021 | 217 |
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.
What human resources consulting firms in St. Louis, MO-IL get with Callata
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 St. Louis, MO-IL 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 human resources consulting firms are there in St. Louis, MO-IL?
Census County Business Patterns counted 72 human resources consulting firms in the St. Louis, MO-IL metro area in 2023. They employed 1,082 people in mid-March.
What does a business phone system cost for a 15-person HR consulting firm?
At month-to-month list prices checked September 28, 2026, 15 users cost $450.00 a month on RingCentral RingEX Core and $374.25 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $299.00.
What area code should a HR consulting firm in St. Louis, MO-IL use?
Area code 314 has the most assigned exchanges among the area's named places, followed by 618 and 636. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for a HR consulting 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.