Business phone system for advertising agencies in Maryland

The advertising agency industry in Maryland

County Business Patterns counts 176 establishments in Maryland classified as Advertising Agencies (NAICS 541810) for 2023. They employed 2,571 people in mid-March and reported $345.5 million in annual payroll. That is the 26th highest count among the 51 states and DC with published figures. Advertising agencies make up 0.12% of the 142,967 business establishments in the state.

Per 100,000 residents (2024 estimate) Maryland has 2.8 advertising agencies, 38.4% below the national rate of 4.6. The average establishment has 14.6 employees against 12.9 nationally. Payroll per employee is $134,389, 25.8% above the U.S. figure of $106,841.

Maryland's largest markets for advertising agencies

Census published advertising agency counts for 3 metro or micropolitan areas that include part of Maryland. The largest is Philadelphia, PA-NJ-DE-MD, with 355 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 61% of the statewide total; the rest are outside any published area or in areas Census suppressed.

Team sizes at advertising agencies in Maryland

62.6% of Maryland's advertising agencies with employees had fewer than five people in March 2023, compared with 68.2% nationally. 75.3% 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.

Calls an advertising agency in Maryland has to catch

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. That holds for advertising agencies in Maryland as much as anywhere.

A few of the calls that come in to advertising agencies in Maryland:

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

What advertising agencies text about

Agencies text approvals and schedule changes.

Texting from a local number in Maryland requires carrier registration (10DLC), a one-time $49 fee on Callata.

What a phone system costs an advertising agency in Maryland

Advertising agencies in Maryland average 14.6 employees, so the comparison uses a 15-person team. On a per-user plan that headcount sets the bill: $374.25 a month on Ooma Office Pro or $450.00 on RingCentral RingEX Core at list price (checked September 28, 2026). 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 an advertising agency in Maryland of that size. Annual contracts lower some competitors' prices, so compare the plan you would actually sign.

Area codes in Maryland

Maryland has 6 geographic area codes in service according to NANPA. Callata includes up to 3 local numbers, so an advertising agency can hold a number in more than one of them.

How Callata works for advertising agencies in Maryland

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 Maryland 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.