In Keystone, 16.4% of all housing units are seasonal or vacation homes, so many customers are only in town part of the year. Web design in Keystone does not have to be complicated: say what you do, where and how to reach you. If you run a business in Keystone, Aria can put a professional website online for $89 a month, with domain, email and hosting included and no setup fee; the first payment comes only after you approve it.

No setup fee: you only pay the $89 monthly fee, after you approve your website.

Keystone, SD: the local picture for your website

29.2% of Keystone residents are under 18, against 24.2% statewide. That makes Keystone a strong market for child care, tutoring, pediatric care, youth sports, birthday venues and family dining, and they all compete for the same parents. Schedules, ages served and how to enroll should sit on the first screen of the website.

Climate normals for Keystone

The nearest NOAA station with 1991-2020 climate normals, Mt Rushmore Nmem, is 2 miles from Keystone. It records an average high of 79°F in July and an average low of 18°F in February. About 24 inches of rain and melted snow fall in a normal year. Freezing nights (32°F or below) come about 152 times a year. Cold winters mean furnace repair, snow removal, roofing and auto service, all searched in a hurry when the first cold snap arrives. Give seasonal work its own page, so customers find them when they need them.

Keystone in figures

268Residents in 2025Census Bureau estimate
$64,702Household income, medianSouth Dakota: $75,081
72Businesses with employees in local ZIP codesZIP Code Business Patterns 2023

The median household income is $64,702, about 14% below the South Dakota median of $75,081.

Website design for the people of Keystone

The county around Keystone, Pennington County, counts 116,792 residents and 9 cities and towns. For a town as small as Keystone, the county figures are more reliable: households have a median income of $74,517, and half the residents are older than 40.1. Broadband reaches 90.6% of homes, and 8.7% of households are online only through a phone plan. Homeowners are 69.3% of households.

Where Keystone customers come from

Keystone’s nearest neighbors are Hill City (7.5 miles, pop. 938), Custer (12 miles, pop. 1,803), Hermosa (12 miles, pop. 370), Rapid City (16 miles, pop. 80,589), Fairburn (18 miles, pop. 69) and Summerset (21 miles, pop. 3,030). Rapid City Regional Airport (RAP) is 21 miles northeast of Keystone in a straight line. There are 9 incorporated cities and towns within 25 miles of Keystone. The nearest large city is Rapid City, 16 miles to the northeast. The county seat, Rapid City, is 16 miles northeast. Naming Custer, Hermosa and the other places you cover on a service area page tells customers outside Keystone that you work there too.

Which Keystone businesses need a small business website

Keystone shares ZIP code 57751 with the surrounding area, where 72 employer businesses were counted in 2023. Some of the businesses behind that number:

  • RV parks and campgrounds: 4. Their website should show site types, amenities, rules, a map and a contact form for availability.
  • Gift and souvenir shops: 6. Their website should show what you carry, store hours and an online store for the same monthly fee.
  • Full-service restaurants: 8. Their website should show the menu, the dining room, private-event information and the hours, kept current by email.

Pennington County as a whole had 4,137 employer establishments in 2023 and another 10,004 nonemployer businesses, the one-person shops and independent contractors that often have no website at all. The county’s largest sectors by number of employer establishments are retail trade (14.1%), construction (12.5%) and health care and social assistance (11.1%).

South Dakota and federal rules for small business websites

Selling or advertising online does not change the rules, but these apply to most Keystone businesses:

  • Out-of-state sellers have to collect South Dakota sales tax once they reach the state threshold: More than $100,000 in gross revenue from sales into South Dakota in the previous or current calendar year (the Department’s page lists no transaction-count test). Official source
  • South Dakota’s state sales and use tax rate is 4.2%, and municipalities add their own sales tax on top of it. South Dakota Department of Revenue

This is general information, not legal advice. Your county, your town hall or an attorney can confirm what applies to you.

Affordable web design for Keystone, done remotely

Aria is a web design company based in Curitiba, Brazil, building websites, online stores and business email since 2008. There is no Aria office in Keystone, and you don’t need one: sign-up, material and approval all happen online.

  1. Start with the online sign-up, which takes about 5 minutes, and send your material by email.
  2. Review the website on a temporary link, ready within 5 business days, and request any changes by email.
  3. Only after you approve do you pay the first monthly fee; then the site is published on your domain.

Later on, you send changes by email (a new price, a new photo, a new service) and the team makes them, with no extra charge.

Plan$89/monthNo setup fee: you only pay the $89 monthly fee, after you approve your website. No lock-in contract.
  • Business website or online store, same price
  • Your domain, registered and renewed by us (or the one you already have)
  • Business email on your domain: 5 GB, webmail and spam filtering
  • Hosting, SSL certificate and daily backups
  • Changes to text, photos and prices, requested by email
  • Ready within 5 business days on a temporary link
I want the $89 plan

Questions from Keystone business owners

Keystone is small. Do I really need a website?

Your market is bigger than the town: Pennington County has 10,004 nonemployer businesses and 4,137 with employees (2023), and customers search across the whole area. A website is how people outside Keystone find you.

Can my website list the towns around Keystone that I serve?

Yes. Tell us by email which towns you cover, Fairburn and Rapid City included, and they go on the website’s service area page.

Can my hours and prices change with the season?

Yes. A short email with the new text is enough, and the change is included in the plan.

Do we need to have meetings?

No. Everything happens online and by email, from Curitiba, Brazil; you see the whole website on a temporary link before approving it.

Is there a setup fee?

No. No setup fee: you only pay the $89 monthly fee, after you approve your website. There is no lock-in contract either: you can end the service whenever you need.

Your Keystone website, domain and email in one plan

You approve the website before the first payment, and there is no setup fee.

Start my sign-up
Sources for the numbers on this page
  • Numbers for Keystone come from the U.S. Census Bureau: 2025 population estimates (Vintage 2025), the 2020-2024 American Community Survey (5-year), county figures where the town estimate is too uncertain, County and ZIP Code Business Patterns 2023, Nonemployer Statistics 2023 and the 2025 Gazetteer for straight-line distances.
  • Climate: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020 (station USC00395870).
  • Founding year, nickname, elevation, waters, colleges, hospitals, airports and parks: Wikidata (item Q2035728), retrieved on October 30, 2026; distances are straight-line.
  • The South Dakota rules come from the official sources linked in that section (checked October 30, 2026); county seats from the USGS National Atlas.