Business phone system for interior design services firms in South Dakota
28 interior design services firms operated in South Dakota in 2023. Where they are, how big their teams are, and what phone service costs them.
- Establishments
- 28CBP 2023
- Employees
- 75mid-March 2023
- Per 100k residents
- 3.0U.S. 4.9
- State rank
- 46th of 51by count
Interior design services firms in South Dakota by the numbers
South Dakota had 28 interior design services firms in 2023, according to Census County Business Patterns (NAICS 541410, Interior Design Services). They employed 75 people in mid-March and reported $3,747,000 in annual payroll. That is the 46th highest count among the 51 states and DC with published figures. Interior design services firms make up 0.10% of the 29,106 business establishments in the state.
Per 100,000 residents (2024 estimate) South Dakota has 3.0 interior design services firms, 38.7% below the national rate of 4.9. The average establishment has 2.7 employees against 3.3 nationally. Payroll per employee is $49,960, 25.2% below the U.S. figure of $66,767.
| Measure | South Dakota | United States |
|---|---|---|
| Establishments | 28 | 16,797 |
| Mid-March employees | 75 | 55,286 |
| Annual payroll | $3,747,000 | $3,691,277,000 |
| Employees per establishment | 2.7 | 3.3 |
| Payroll per employee | $49,960 | $66,767 |
| Establishments per 100,000 residents | 3.0 | 4.9 |
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.
Interior design services firms by metro area in South Dakota
Census published interior design firm counts for 3 metro or micropolitan areas that include part of South Dakota. The largest is Sioux Falls, SD-MN, with 18 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 11% 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 | 18 | 41 | 5.8 |
| Sioux City, IA-NE-SD | 4 | — | 2.7 |
| Rapid City, SD | 3 | — | 1.9 |
Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.
Team sizes at interior design services firms in South Dakota
75.0% of South Dakota's interior design services firms with employees had fewer than five people in March 2023, compared with 81.7% nationally. 100.0% 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 | 21 | 75.0% | 81.7% |
| 5–9 employees | 7 | 25.0% | 12.1% |
| 10–19 employees | not published | — | 4.3% |
| 20–49 employees | not published | — | 1.6% |
| 50 or more employees | 0 | 0.0% | 0.3% |
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.
What interior design services firms in South Dakota use the phone for
Interior designers coordinate clients, contractors and vendors while spending much of the day on site. A business line that rings their cell and transcribes voicemail keeps project details from getting lost.
Typical inbound and outbound calls for interior design services firms in South Dakota:
- A vendor calls about a backordered item.
- A client calls about an installation date.
- A contractor calls with a measurement question.
When nobody can pick up
After-hours calls are usually project updates that can wait until morning.
Callata voicemail is transcribed and triaged for urgency, and business-hours routing decides where calls go once you close.
What a phone system costs an interior design firm in South Dakota
Interior design services firms in South Dakota average 2.7 employees, so the comparison uses a 3-person team. Per-seat business phone plans bill every one of those people. At month-to-month list prices checked September 28, 2026, 3 users on RingCentral RingEX Core cost $90.00 a month and 3 on Ooma Office Pro cost $74.85. Callata is $99.00 a month with 5 users included, which is more than either per-seat plan for 3 people; it becomes the lower price at 4 users or more.
At this team size the per-seat plans cost less than Callata's $99 base price, which already covers 5 users; Callata becomes the lower price from 4 users.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $99.00 | $1,188.00 |
| Quo (Starter) | $19.00 per user | $57.00 | $684.00 |
| Nextiva (Core) | $23.00 per user | $69.00 | $828.00 |
| Ooma (Office Pro) | $24.95 per user | $74.85 | $898.20 |
| Dialpad (Standard) | $27.00 per user | $81.00 | $972.00 |
| RingCentral (RingEX Core) | $30.00 per user | $90.00 | $1,080.00 |
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. You can choose local numbers in the area codes your clients know, subject to carrier inventory, or port your current number for free.
| 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 interior design services firms in South Dakota
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 South Dakota, 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 interior design services firms are in South Dakota?
28 in 2023, according to Census County Business Patterns. They employed 75 people in mid-March.
Which South Dakota metro area has the most interior design services firms?
Sioux Falls, SD-MN, with 18 establishments in 2023.
What does a phone system cost a 3-person interior design firm?
$90.00 a month on RingCentral RingEX Core or $74.85 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $99.00 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.