Business phone system for advertising agencies in Missouri

The advertising agency industry in Missouri

Missouri had 235 advertising agencies in 2023, according to Census County Business Patterns (NAICS 541810, Advertising Agencies). They employed 5,183 people in mid-March and reported $498.4 million in annual payroll. That is the 19th highest count among the 51 states and DC with published figures. Advertising agencies make up 0.16% of the 151,475 business establishments in the state.

Per 100,000 residents (2024 estimate) Missouri has 3.8 advertising agencies, 17.5% below the national rate of 4.6. The average establishment has 22.1 employees against 12.9 nationally. Payroll per employee is $96,160, 10.0% below the U.S. figure of $106,841.

Where advertising agencies in Missouri are concentrated

Census published advertising agency counts for 7 metro or micropolitan areas that include part of Missouri. The largest is Kansas City, MO-KS, with 114 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 22% of the statewide total; the rest are outside any published area or in areas Census suppressed.

Team sizes at advertising agencies in Missouri

56.5% of Missouri's advertising agencies with employees had fewer than five people in March 2023, compared with 68.2% nationally. 76.3% 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.

What advertising agencies in Missouri use the phone for

Agencies manage many client relationships at once, and clients expect to reach their account team quickly. Recording and summarizing calls helps teams keep track of approvals and requests.

Typical inbound and outbound calls for advertising agencies in Missouri:

• A production vendor calls about a shoot.
• The agency calls a client to review creative.
• A prospect calls about agency services.

Calls after closing time

Launch-day issues can be urgent; otherwise after-hours calls can wait.

Callata voicemail is transcribed and triaged for urgency, and business-hours routing decides where calls go once you close.

Callata vs. per-seat pricing for advertising agencies in Missouri

Advertising agencies in Missouri average 22.1 employees, so the comparison uses a 22-person team. Priced per seat, 22 users would run $660.00 a month on RingCentral RingEX Core and $548.90 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). On Callata the same 22 people cost $439.00 a month, less than either per-seat plan.

The annual difference against RingCentral's monthly list price comes to $2,652. Some vendors discount annual contracts; the table shows month-to-month 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 clients know, subject to carrier inventory, or port your current number for free.

How Callata works for advertising agencies in Missouri

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 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.