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Growform Multi Step Form Builder

Feature

ZIP code and postal code validation

Growform's ZIP code field accepts a code only when it matches the format of the country you choose. Every lead arrives with a code you can route, price and match to a service area.

The ZIP code field in the Growform editor with the USA format selected

What is ZIP code validation?

ZIP code validation is a check that the code a lead types matches the format used in their country. Postal code validation is the same check for countries that use letters as well as numbers. In Growform both are handled by one field, called “ZIP / postal code”. You choose the country format once, and the field rejects anything that does not fit it.

Which ZIP code and postal code formats are supported?

The ZIP code field supports five country formats.

  • USA. Only numbers can be typed. The field accepts a standard ZIP code such as 90210 and the ZIP+4 format such as 90210-1234.
  • UK. Standard postcode patterns such as EC1A 1BB, W1A 0AX and M1 1AE are accepted in upper or lower case.
  • Canada. The code alternates letters and numbers, as in K1A 0B1, with an optional space or hyphen in the middle.
  • Australia. The code is checked against the Australian postcode format.
  • France. The code is checked against the French postcode format.

Does the ZIP code field show a numeric keyboard on mobile?

It does for the USA format. A homeowner on a phone sees the numeric keyboard as soon as they tap the field. That matters on an opening step, where the ZIP code is often the only question in a multi-step form.

Can you qualify leads by ZIP code?

You can, because a valid code is one your rules are able to measure. Location-based logic tests whether a ZIP code is within a set distance of a location you choose. An HVAC contractor can show the booking steps to homeowners inside the service radius and a different ending to everyone else. The same rule can power lead disqualification, which keeps out-of-area leads away from your sales team.

When you need the full address, address autocomplete returns the ZIP code as a separate value.

How do you validate ZIP codes in Growform?

Add the ZIP code field

Open your form and add the “ZIP / postal code” field to the step where you ask for location.

Choose the country format

Select the field and pick the format for the country you serve, for example “ZIP code (USA)”.

Decide whether it is required

Keep “This field is required” switched on if every lead must give a code.

Save and test

Save the form, then enter a code in the wrong format to see the field reject it.

Why a clean ZIP code is worth checking for

  • Leads can be routed to the right territory.

    A code in the correct format can be matched to an area by your lead distribution platform.

  • Out-of-area leads are identified in the form.

    Distance rules read the validated code and decide which steps or ending the lead sees.

  • Mobile leads finish the step faster.

    The USA format opens the numeric keyboard, so nobody has to switch keyboards to type a number.

  • Buyers receive data in the format they expect.

    The field blocks letters in a US ZIP code and accepts ZIP+4 when a lead knows theirs.

Which plans include ZIP code validation?

Basic, Professional, Scale and Custom all include the ZIP / postal code field and its format checks.

Basic
Yes
Professional
Yes
Scale
Yes
Custom
Yes

Frequently asked questions

Does the field accept ZIP+4 codes?

Yes. The USA format accepts either a standard ZIP code or a ZIP+4 code such as 90210-1234.

Can the ZIP code be passed in from my landing page?

Yes. The field can be prefilled from a URL parameter, so a code collected on your page carries into the form.

Can I route leads by ZIP code?

Yes. The code is sent with the lead through webhooks and Zapier, so your CRM or lead distribution platform can route on it.

Related features

Location-based logic

Change steps and endings according to distance from a location.

View ›

Address autocomplete

Suggest complete addresses while the lead is typing.

View ›

URL prefill

Fill fields in advance from parameters in the page URL.

View ›

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