- Median age42
- Aged 65+20%
- Under 2531.2%
- Median household income$2,551/wk
- Median rent$560/wk
A suburb built on salaries, not shopfronts.
Castle Hill runs on professional work, not a warehouse district and not a single strip of speciality shops. Professional, scientific and technical services is the largest sector across The Hills Shire, 4,973 businesses, engineers, accountants, architects and consultants, just ahead of construction. Household income sits at $2,551 a week, among the highest figures FindDevs sees, and the population is 40,874 with a median age of 42, an established suburb rather than a growth corridor still filling in.
'We're flat out anyway' is the sentence you hear from most Castle Hill business owners asked why they haven't touched their website. It's true, and it's the wrong reason to skip it. Household income here is $2,551 a week and family income $2,858, so customers can pay full price without blinking. There are also 5,760 businesses already trading in Castle Hill, so nobody here is the only name in the phone book. They've seen good websites everywhere else, at work, on their bank's app, on the things they buy online, and they judge a tradie's quote form or a clinic's booking page against that same standard. A dentist, a builder, an accountant or a physio here isn't short of customers. They're short of a website that looks like it deserves the ones already willing to pay.
Three vetted Australian developers, hand-picked to a Castle Hill brief, quoted in writing within 24 hours. Free, no obligation.
The Castle Hill market, by the numbers.
Pulled from the Australian Bureau of Statistics: the 2021 Census for Castle Hill itself, and the latest Data by Region release (2025) for the The Hills Shire area. This is the market your website sells into.
- The Hills Shire total27,164
- Solo / non-employing15,752
- 1–4 staff8,726
- 5–19 staff2,121
- 20+ staff565
90% of local businesses have fewer than 5 staff. That's exactly who FindDevs was built for.
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Professional, scientific & technical services4,973
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Construction4,718
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Rental, hiring & real estate3,693
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Health care & social assistance2,629
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Financial & insurance services1,797
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Retail trade1,597
*Suburb business estimate: LGA business count (ABS CABEE, Data by Region) apportioned by the suburb's share of the LGA population at the 2021 Census; rounded to the nearest 10. Sources: ABS Census 2021 (Suburbs and Localities), ABS Data by Region. Refreshed 2026-08-29.
What Castle Hill businesses actually build.
Indicative ranges from briefs like these in the FindDevs network. Your three quotes will be specific to your scope.
For builders, electricians and plumbers working new estates and renovations across The Hills Shire, built to convert a phone search into a booked quote.
- Quote request form with job photos
- Service area map for The Hills Shire
- Mobile-first for on-site browsing
- Google Business Profile integration
For accountants, architects, consultants and financial advisers who need a site that reads as credible to a $2,551-a-week household before the first call.
- Team and credentials pages
- Enquiry form with file upload
- Case studies and service pages
- Local SEO for professional searches
For clinics, physios and allied health providers who need patients booking appointments online instead of ringing during business hours.
- Online booking and calendar sync
- Patient or client intake forms
- Payment and deposit handling
- Reminders by SMS or email
Free · No signup wall · Stay anonymous if you want · 2 minutes
Local knowledge, without being stuck with one local option.
Around Castle Hill the problem isn't finding someone who says they build websites. It's telling who's actually good. We vet so you don't have to, then hand you three written quotes from developers matched to your exact brief, in 24 hours.
Every developer holds an ABN, works Australian hours, and passed our vetting: portfolio, communication, and references from Aussie clients. 12% acceptance rate. No offshore hand-offs.
The median age in Castle Hill is 42. Your customers find everything on their phones, usually in a spare minute. We match developers who build mobile-first, fast-loading pages that turn that search into a call or a booking.
The service costs you nothing. Developers cover our fee from their winning quote, never inflated into your price. And if a matched developer drops the ball mid-project, we step in. Service Guarantee, always.
Castle Hill questions.
Know the price before you talk to anyone.
These are published fixed-price builds, available to Castle Hill businesses like any other. No hourly rates, no discovery call before you can see a number.
A sharp five-page website that makes a small business look established, live in a fortnight.
See what's includedThe full small-business build: 8–12 pages, booking or quoting flows, and local SEO that actually ranks.
See what's includedThe ranking machine bolted onto your existing site: service pages, suburb pages, schema and reviews, done properly once.
See what's includedHosting, updates, backups, security and monthly changes, all handled, so your site stays fast and safe without you thinking about it.
See what's includedDevelopers who have built for your trade before.
The biggest employers around Castle Hill, by registered businesses in The Hills Shire. Each one has its own page, because a cafe site and a plant-hire site are not the same job.