CallataGuidesBusiness phone system for advertising agencies in South Dakota
40 advertising agencies operated in South Dakota in 2023. Where they are, how big their teams are, and what phone service costs them.
- Establishments
- 40CBP 2023
- Employees
- 319mid-March 2023
- Per 100k residents
- 4.3U.S. 4.6
- State rank
- 43rd of 51by count
Advertising agencies in South Dakota by the numbers
County Business Patterns counts 40 establishments in South Dakota classified as Advertising Agencies (NAICS 541810) for 2023. They employed 319 people in mid-March and reported $23.1 million in annual payroll. That is the 43rd highest count among the 51 states and DC with published figures. Advertising agencies make up 0.14% of the 29,106 business establishments in the state.
Per 100,000 residents (2024 estimate) South Dakota has 4.3 advertising agencies, 5.2% below the national rate of 4.6. The average establishment has 8.0 employees against 12.9 nationally. Payroll per employee is $72,498, 32.1% below the U.S. figure of $106,841.
| Measure | South Dakota | United States |
|---|---|---|
| Establishments | 40 | 15,512 |
| Mid-March employees | 319 | 200,465 |
| Annual payroll | $23,127,000 | $21,417,972,000 |
| Employees per establishment | 8.0 | 12.9 |
| Payroll per employee | $72,498 | $106,841 |
| Establishments per 100,000 residents | 4.3 | 4.6 |
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 advertising agencies in South Dakota are concentrated
Census published advertising agency counts for 4 metro or micropolitan areas that include part of South Dakota. The largest is Sioux Falls, SD-MN, with 22 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 28% of the statewide total; the rest are outside any published area or in areas Census suppressed.
| Area | Establishments | Employees | Per 100k residents |
|---|---|---|---|
| Sioux Falls, SD-MN | 22 | 250 | 7.1 |
| Rapid City, SD | 7 | — | 4.5 |
| Sioux City, IA-NE-SD | 4 | 14 | 2.7 |
| Spearfish, SD | 4 | 6 | 13.9 |
Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.
Team sizes at advertising agencies in South Dakota
59.0% of South Dakota's advertising agencies with employees had fewer than five people in March 2023, compared with 68.2% nationally. 79.5% 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.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 23 | 59.0% | 68.2% |
| 5–9 employees | 8 | 20.5% | 12.0% |
| 10–19 employees | 4 | 10.3% | 8.4% |
| 20–49 employees | 4 | 10.3% | 6.4% |
| 50 or more employees | 0 | 0.0% | 5.0% |
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.
What advertising agencies in South Dakota 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.
Calls an advertising agency in South Dakota might handle in a typical week include:
- A prospect calls about agency services.
- The agency calls a client to review creative.
- A client calls to change a campaign budget.
Business texting for advertising agencies
Agencies text approvals and schedule changes.
Texting from a local number in South Dakota requires carrier registration (10DLC), a one-time $49 fee on Callata.
Callata vs. per-seat pricing for advertising agencies in South Dakota
Advertising agencies in South Dakota average 8.0 employees, so the comparison uses an 8-person team. Per-seat business phone plans bill every one of those people. At month-to-month list prices checked September 28, 2026, 8 users on RingCentral RingEX Core cost $240.00 a month and 8 on Ooma Office Pro cost $199.60. Callata comes to $159.00 a month for 8 users ($99 a month with 5 users included, then $20 per additional user), below both.
Over a year, that is $972 less than RingCentral for an advertising agency in South Dakota 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 | $159.00 | $1,908.00 |
| Quo (Starter) | $19.00 per user | $152.00 | $1,824.00 |
| Nextiva (Core) | $23.00 per user | $184.00 | $2,208.00 |
| Ooma (Office Pro) | $24.95 per user | $199.60 | $2,395.20 |
| Dialpad (Standard) | $27.00 per user | $216.00 | $2,592.00 |
| RingCentral (RingEX Core) | $30.00 per user | $240.00 | $2,880.00 |
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 South Dakota
South Dakota has 1 geographic area code 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.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 605 | 745 | Central and Mountain | 1947 | none |
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 advertising agencies in South Dakota
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 South Dakota 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 advertising agencies are in South Dakota?
40 in 2023, according to Census County Business Patterns. They employed 319 people in mid-March.
Which South Dakota metro area has the most advertising agencies?
Sioux Falls, SD-MN, with 22 establishments in 2023.
What does a phone system cost an 8-person advertising agency?
$240.00 a month on RingCentral RingEX Core or $199.60 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $159.00 on Callata ($99 a month with 5 users included, then $20 per additional user).
Do I need to register to text customers from a South Dakota 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.