Antioch sits on the San Joaquin River, a city of 118,958 residents in Contra Costa County. Web design in Antioch should say exactly which waters and shores you work on. Aria builds small business websites for Antioch companies for $89 a month, with the domain, business email and hosting included, and you only pay after you approve the website.

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

Web design in Antioch: reading the local market

The average commute from Antioch is 42.0 minutes one way. People who leave early and come home late do their errands online, so the website works the shift you cannot. If you work outside office hours, say it at the top; it decides the choice for many residents.

Look at what Antioch does for a living: 23.9% of employed residents work in education, health care and social assistance, 13.4% in professional, management and administrative services. What people do for a living decides when they shop, what they need fixed and how they decide: shift workers look for evening and weekend hours, office workers search at lunch, and business owners compare suppliers before they call. Make your hours impossible to miss, and say whether you work evenings or Saturdays if you do. That is the job a small business website does best: answering the first questions before anyone has to ask.

The businesses that compete for customers in Antioch

In the ZIP codes that lie mostly inside Antioch (94531, 94509), the Census counted 1,538 business establishments with employees in 2023. Among them:

  • Flooring contractors, 14 in the count. What works online: photos by floor type (tile, wood, vinyl), the areas you cover and a form to book an estimate visit.
  • Nail salons, 20 in the count. What works online: services, photos of real work, hours and location.
  • Local trucking companies, 18 in the count. What works online: the freight you haul, the areas you cover and a contact form for shippers.
  • Dental offices, 54 in the count. What works online: the treatments you offer, a map to the office and a contact form, written in plain words for nervous patients.

Contra Costa County as a whole had 25,932 employer establishments in 2023 and another 102,001 nonemployer businesses, the one-person shops and independent contractors that often have no website at all. By number of employer establishments, professional, scientific and technical services leads in Contra Costa County (15.0%), followed by health care and social assistance (14.3%) and construction (10.8%). Every one of them is a search away from a customer in Antioch.

Your Antioch audience

About 23.4% of the city speaks Spanish at home. In Antioch, a website that says plainly what you do, where and how to reach you works for both audiences.

Homeownership is high in Antioch: 63.6% of households own, against 55.9% in California. Homeowners hire contractors, landscapers, cleaners and insurance agents, and many look them up online first.

The next most common home language group after English and Spanish is Tagalog (5.3%). Customers who grew up with another language skim for prices, hours and a contact button.

With broadband in 95.8% of homes, Antioch is a connected market. Online research comes before the phone call.

Five years of change in Antioch

Every annual estimate since 2020 has been higher than the year before: 115,388 in 2020, then 115,531 in 2021, 116,080 in 2022, 117,148 in 2023, 118,308 in 2024, 118,958 in 2025. That compares with −0.5% for California as a whole. Every family that moves in starts by searching for the basics, and the businesses with a website get that first look.

What the Census counts in Antioch

118,958Residents, 2025 estimateCensus Bureau estimate
+3.1%Growth since 2020California: −0.5%
$97,465Median income per householdCalifornia: $99,122
38.4Median age of residentsCalifornia: 37.9
95.8%Households with a broadband planCalifornia: 93.5%
1,538Businesses with employees in local ZIP codesZIP Code Business Patterns 2023

Antioch’s median age of 38.4 compares with 37.9 across California. Household incomes in Antioch track the state: a median of $97,465, against $99,122 for California. Of the 37,381 households in Antioch, 63.6% are homeowners. Housing costs: a median home value of $629,700 and a median rent of $2,278 a month, against $734,700 and $2,036 in California.

Antioch on the map

Within a short drive of Antioch you find Brentwood (5.1 miles, pop. 66,607), Oakley (5.7 miles, pop. 47,583), Pittsburg (6.3 miles, pop. 77,542), Clayton (7.8 miles, pop. 10,842) and Concord (11 miles, pop. 123,261). Rosie the Riveter World War II Home Front National Historical Park is a short trip away: within 31 miles. Buchanan Field Airport (CCR) is 14 miles west of Antioch in a straight line. Stockton, a city of 324,597, is 27 miles east. Martinez, seat of Contra Costa County, lies 17 miles to the west. Antioch covers 29.2 square miles of land and 0.8 square miles of water, about 4,078 residents per square mile. A service area page that lists the towns you cover, from Antioch to Clayton and Oakley, answers the first question many customers have: do you come to me?

The Antioch climate, from a business owner’s view

Climate normals for 1991-2020 from Mt Diablo Junction, 10 miles away, put the August average high at 83°F and the December average low at 41°F. Precipitation totals about 26 inches a year, with December the wettest month. The high reaches 90°F or more on about 27 days a year, and the low falls to freezing or below on about 19 days. Mild weather keeps outdoor work going most of the year: patios, yards and outdoor events have a long season. Put your seasonal services on their own page, so the right page is there when the weather turns.

From sign-up to a live website

Aria has built websites since 2008 and is based in Curitiba, Brazil. Nobody from Aria will visit: you send your material by email, and you approve the website on a temporary link.

  1. Register your business online in about 5 minutes; the logo, photos and texts you already have go by email.
  2. Within 5 business days you get a temporary link with the whole website, built with your logo, colors and photos.
  3. Ask for adjustments by email, approve, and after the first monthly fee the site 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

Before you publish: California and federal rules

These are some of the California and federal rules a small business with a website runs into:

  • Check with both Contra Costa County and the City of Antioch about local business tax receipts before opening. Official source
  • Newsletters and promotions sent from your business email must include a working way to unsubscribe (16 CFR Part 316). 16 CFR Part 316
  • California’s statewide sales and use tax rate is 7.25%, and most areas add district taxes of roughly 0.10% to 2.00% on top of it. California Department of Tax and Fee Administration (CDTFA)
  • A fictitious business name statement is filed with the county clerk, not the state: a for-profit business using a name other than the owner’s surname files in the county of its principal place of business. California Business and Professions Code section 17900 et seq.
  • A federal rule (16 CFR Part 465) makes it unlawful to write, buy or sell fake reviews and testimonials, so the reviews on a business website have to be real. 16 CFR Part 465

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

Before you sign up: questions from Antioch

Can the website mention Brentwood, Oakley and the other towns I cover?

Yes. The website can carry a service area section naming Brentwood, Oakley, Clayton and any other town you cover; you send the list by email.

Will someone from Aria visit my business in Antioch?

No visits: Aria works remotely from Curitiba, Brazil. You send your logo, photos and texts by email, and approve the website on a temporary link.

Can I sell online from Antioch?

Yes, for the same $89 a month: catalog, cart and online payment. Remember that sales tax applies; California’s state rate is 7.2%, and local taxes may apply.

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.

Get your Antioch business online for $89 a month

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 Antioch come from the U.S. Census Bureau: 2025 population estimates (Vintage 2025), the 2020-2024 American Community Survey (5-year), County and ZIP Code Business Patterns 2023, Nonemployer Statistics 2023 and the 2025 Gazetteer (distances in a straight line).
  • Climate: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020 (station USC00045915).
  • Founding year, nickname, elevation, waters, colleges, hospitals, airports and parks: Wikidata (item Q495357), 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.