In San Marcos, 32.2% of residents age 3 and over are college or graduate students, and 42.8% of the population is between 20 and 34. Web design in San Marcos has to work for students, parents and staff at once. If you run a business in San Marcos, 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.

Why a San Marcos website can’t be generic

As the county seat of Hays County, San Marcos gets visitors from across Hays County for court dates, permits and records. That is a county of 304,390 people and 13 cities and towns. Visitors who come in for county business often need something else while they are here: lunch, a copy shop, a notary, a mechanic. Show the address, where to park and the hours on every page; a visitor from out of town wants to plan the trip. That is the job a small business website does well: saying the obvious things clearly.

Households in San Marcos have a median income of $51,281 (Texas: $78,476). A fair price decides many choices here, and clear prices earn trust. Payment options, how estimates work and when you are open should be easy to find.

San Marcos grew from 68,199 to 77,830 residents between 2020 and 2025, a 14.1% increase and the 250th fastest growth among Texas’ 1,224 municipalities. 22.2% of residents were born in another state. In a growing city, the businesses that show up in a search win the newcomers first, and newcomers tend to stick once they have found someone good. A newcomer does not know your name yet, so the homepage should say in one sentence what you do, where, and how to reach you. The website is where all of this turns into a decision, so it pays to get the basics right.

San Marcos in figures

77,830Residents in 2025Census Bureau estimate
+14.1%Population change since 2020Texas: +8.8%
$51,281Median household incomeTexas: $78,476
32.2%Enrolled in college or grad schoolACS 2020-2024
25.5Median age of residentsTexas: 35.6
1,880Employer establishments, local ZIPsZIP Code Business Patterns 2023

The median home value is $310,400 and the median gross rent is $1,322 a month (Texas: $283,800 and $1,403). Of the 28,013 households in San Marcos, 30.8% are homeowners.

Year after year the count goes up: 69,442 in 2021, 70,572 in 2022, 72,005 in 2023, 76,114 in 2024, 77,830 in 2025. Statewide, the change was +8.8%. New residents mean new customers who don’t have a favorite plumber, dentist or restaurant yet.

Where San Marcos customers come from

Nearby incorporated places: Martindale (6.2 miles, pop. 1,298), Kyle (8.9 miles, pop. 69,917), Staples (10 miles, pop. 185), Uhland (11 miles, pop. 1,958), Mountain City (12 miles, pop. 675) and Wimberley (12 miles, pop. 2,909). The city spreads over 40.4 square miles of land and 0.1 square miles of water, with roughly 1,925 people per square mile. The nearest large city is Austin, 31 miles to the north. Interstate 35 runs through the city. The city sits on the Blanco River. Customers in Staples and Uhland will ask the same thing: do you work here? A service area page answers before they have to.

Businesses in and around San Marcos

San Marcos shares ZIP code 78666 with the surrounding area, where 1,880 employer businesses were counted in 2023. A sample of that count, and what each kind of business needs online:

  • Clothing stores: 56. Their website should show new arrivals, store hours and an online store for the same monthly fee.
  • Residential property managers: 35. Their website should show the services for owners, the areas you manage and a contact form for owners and tenants.
  • Hotels and motels: 29. Their website should show rooms, photos, location and a contact form, so travelers can compare you outside the booking apps.
  • Full-service restaurants: 66. Their website should show the menu, hours, location and photos of the food, easy to read on a phone.
  • Plumbing, heating and air-conditioning contractors: 27. Their website should show the services you offer, the towns you cover and a form for service calls that lands in your email.

In Hays County, the Census counted 5,891 businesses with employees and 25,793 without a payroll in 2023; the second group is where a simple, affordable website changes the most. Compared with the U.S. as a whole, Hays County leans toward breweries, wineries and distilleries (28 establishments, 3.4 times the national share). In that business, visitors plan tasting trips around hours and directions, and the website should show what is on tap or in the bottle, tasting-room hours, events and directions. San Marcos’ working residents are concentrated in education, health care and social assistance (24.3%) and arts, entertainment, recreation, lodging and food service (18.9%). Each of these businesses competes for the same search: someone in San Marcos typing what they need and picking from the results that look trustworthy.

Who is searching in San Marcos

People aged 20 to 34 are 42.8% of San Marcos, against 21.4% statewide. Young adults compare a few options on a phone and pick fast; a slow or vague website loses them. Most households here rent: 69.2%, against 37.4% across Texas. Each move starts a new search for the closest gym, cleaner or auto shop.

Spanish is the home language for 23.3% of San Marcos residents; 6.0% of all residents report speaking English less than very well. A website that makes the essentials obvious at a glance (what you do, where you are, how to reach you) serves both audiences.

A year of weather in San Marcos

By the 1991-2020 normals of the San Marcos weather station (1 miles from San Marcos), August highs average 97°F and January lows average 39°F. About 37 inches of rain and melted snow fall in a normal year, most of it in May. The high reaches 90°F or more on about 117 days a year, and the low falls to freezing or below on about 20 days. Long, hot summers mean steady work for AC repair, pool care and pest control, and nobody waits when the AC stops. Give seasonal work its own page, so the right page is there when the weather turns.

Before you publish: Texas and federal rules

Some homework before launch:

  • Texas has no state-level general license, but city and county permits still apply, so check the local county and city government where the business operates. In San Marcos, that means asking Hays County and the City of San Marcos. Official source
  • The Texas Data Privacy and Security Act (TDPSA) rarely reaches a local business: The chapter reaches a person who does business in Texas or sells products or services consumed by Texans, processes or sells personal data, and is NOT a small business under the United States Small Business Administration definition. A typical small business is therefore outside the main obligations, but Section 541.107 still applies to it: a small business may not sell sensitive personal data without the consumer’s prior consent. Tex. Bus. & Com. Code Chapter 541 (HB 4, 88th Legislature, 2023)
  • Selling to customers in other states? Each state sets its own threshold for remote sellers; Texas’ is $500,000 or more in total Texas revenue in the preceding twelve calendar months (sellers below that stay inside the safe harbor). 34 Tex. Admin. Code Section 3.286
  • Texas charges a 6.25% state sales and use tax, and local jurisdictions may add up to 2%, for a maximum combined rate of 8.25%. Texas Comptroller of Public Accounts
  • A trade name must match your legal name or an assumed name certificate (DBA) registered with Texas. Tex. Bus. & Com. Code Chapter 71

Each business is different; this is general information, not legal advice.

What happens after you sign up

Aria is based in Curitiba, Brazil, and has built websites for businesses since 2008. We don’t have an office in San Marcos: the whole process happens online, and the plan is the same $89 a month in any city.

  1. Start with the online sign-up, which takes about 5 minutes, and send your material by email.
  2. Within 5 business days you get a temporary link with the whole website, built on a proven template with your brand.
  3. Once you approve it, the first monthly fee is issued and the website goes live 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

Small business website questions from San Marcos

I just opened in San Marcos. Is it too early for a website?

No. Start simple: what you do, where and how to reach you. Add photos and new services by email as the business grows.

Can the website mention Uhland, Martindale and the other towns I cover?

Yes. List Uhland, Martindale, Staples or any other place you work on a service area page, and every page keeps the contact form.

Can I have an email address with my business name?

Yes. Email addresses on your domain come with the plan, with 5 GB of total storage, webmail and spam filtering.

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.

Put your San Marcos business on the web

No setup fee, no lock-in contract: you see the finished website first and pay the first month only if you approve it.

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Sources for the numbers on this page
  • U.S. Census Bureau: Vintage 2025 population estimates; American Community Survey 2020-2024 (5-year); ZIP Code and County Business Patterns 2023; Nonemployer Statistics 2023; 2025 Gazetteer (straight-line distances).
  • Climate: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020 (station USC00417983).
  • Highways: U.S. Census Bureau TIGER/Line 2024 primary roads and 2024 cartographic boundary files.
  • Founding year, nickname, elevation, waters, colleges, hospitals, airports and parks: Wikidata (item Q982353), retrieved on October 30, 2026; distances are straight-line.
  • State rules come from the official sources linked in that section (checked October 30, 2026); county seats from the USGS National Atlas.