Business phone system for security systems services in Missouri
110 security systems services operated in Missouri in 2023. Where they are, how big their teams are, and what phone service costs them.
- Establishments
- 110CBP 2023
- Employees
- 5,587mid-March 2023
- Per 100k residents
- 1.8U.S. 2.1
- State rank
- 24th of 51by count
The security systems company industry in Missouri
Missouri had 110 security systems services in 2023, according to Census County Business Patterns (NAICS 561621, Security Systems Services (except Locksmiths)). They employed 5,587 people in mid-March and reported $328.9 million in annual payroll. That is the 24th highest count among the 51 states and DC with published figures. Security systems services make up 0.07% of the 151,475 business establishments in the state.
Per 100,000 residents (2024 estimate) Missouri has 1.8 security systems services, 16.2% below the national rate of 2.1. The average establishment has 50.8 employees against 18.0 nationally. Payroll per employee is $58,878, 16.0% below the U.S. figure of $70,074.
| Measure | Missouri | United States |
|---|---|---|
| Establishments | 110 | 7,151 |
| Mid-March employees | 5,587 (moderate noise) | 128,462 |
| Annual payroll | $328,949,000 (moderate noise) | $9,001,839,000 |
| Employees per establishment | 50.8 | 18.0 |
| Payroll per employee | $58,878 | $70,074 |
| Establishments per 100,000 residents | 1.8 | 2.1 |
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.
Where security systems services in Missouri are concentrated
Census published security systems company counts for 6 metro or micropolitan areas that include part of Missouri. The largest is St. Louis, MO-IL, with 43 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 25% of the statewide total; the rest are outside any published area or in areas Census suppressed.
| Area | Establishments | Employees | Per 100k residents |
|---|---|---|---|
| St. Louis, MO-IL | 43 | 894 | 1.5 |
| Kansas City, MO-KS | 42 | 4,257 | 1.9 |
| Springfield, MO | 16 | 498 | 3.2 |
| Columbia, MO | 4 | 34 | 1.8 |
| Jefferson City, MO | 4 | 15 | 2.6 |
| Sedalia, MO | 3 | — | 6.9 |
Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.
Team sizes at security systems services in Missouri
46.8% of Missouri's security systems services with employees had fewer than five people in March 2023, compared with 48.4% nationally. 70.6% had fewer than ten. That is the size of team where a missed call usually means nobody was free, not that nobody was on staff.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 51 | 46.8% | 48.4% |
| 5–9 employees | 26 | 23.9% | 19.3% |
| 10–19 employees | 11 | 10.1% | 13.9% |
| 20–49 employees | 14 | 12.8% | 11.1% |
| 50 or more employees | 7 | 6.4% | 7.3% |
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 security systems services in Missouri
Security companies take calls about new installations, alarms and service problems. Existing customers expect quick help when a system misbehaves.
A few of the calls that come in to security systems services in Missouri:
- A homeowner calls about installing cameras.
- A builder calls about pre-wiring.
- A business calls about a faulty alarm panel.
When nobody can pick up
Alarm problems at night need clear after-hours routing.
Callata voicemail is transcribed and triaged for urgency, and business-hours routing decides where calls go once you close.
What a phone system costs a security systems company in Missouri
Security systems services in Missouri average 50.8 employees, so the comparison uses a 51-person team. Priced per seat, 51 users would run $1,530.00 a month on RingCentral RingEX Core and $1,272.45 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). On Callata the same 51 people cost $1,019.00 a month, less than either per-seat plan.
The annual difference against RingCentral's monthly list price comes to $6,132. 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 | $1,019.00 | $12,228.00 |
| Quo (Starter) | $19.00 per user | $969.00 | $11,628.00 |
| Nextiva (Core) | $23.00 per user | $1,173.00 | $14,076.00 |
| Ooma (Office Pro) | $24.95 per user | $1,272.45 | $15,269.40 |
| Dialpad (Standard) | $27.00 per user | $1,377.00 | $16,524.00 |
| RingCentral (RingEX Core) | $30.00 per user | $1,530.00 | $18,360.00 |
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.
Area codes in Missouri
Missouri has 9 geographic area codes in service according to NANPA. You can choose local numbers in the area codes your customers know, subject to carrier inventory, or port your current number for free.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 573 | 786 | Central | 1996 | 235 |
| 816 | 785 | Central | 1947 | 975 |
| 314 | 783 | Central | 1947 | 557 |
| 417 | 711 | Central | 1950 | none |
| 660 | 516 | Central | 1997 | none |
| 636 | 435 | Central | 1999 | none |
| 557 | 83 | Central | 2022 | 314 |
| 235 | 41 | Central | 2024 | 573 |
| 975 | 28 | Central | 2023 | 816 |
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 security systems services in Missouri
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.
If you already have a number in Missouri, 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 security systems services are in Missouri?
110 in 2023, according to Census County Business Patterns. They employed 5,587 people in mid-March.
Which Missouri metro area has the most security systems services?
St. Louis, MO-IL, with 43 establishments in 2023.
What does a phone system cost a 51-person security systems company?
$1,530.00 a month on RingCentral RingEX Core or $1,272.45 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $1,019.00 on Callata ($99 a month with 5 users included, then $20 per additional user).
Do I need to register to text customers from a Missouri 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.