Slovakia PSČ validator
How the PSČ format works
- Format
- 5 digits, conventionally written as 3 digits + 2 digits
- Example
- 81101
Things to watch for
- Format-only check — does not confirm the PSČ actually exists
- Always exactly 5 digits; the customary space after the 3rd digit (e.g. 811 01) is stripped before this validator checks it
- Shares its 1973 Czechoslovak-era numbering block with Czechia: Slovak codes occupy the ranges Czechia's didn't use — the low 0xx block (Žilina 010 01, Košice 040 01) and the high 8xx–9xx block (Bratislava 811 01, Nitra 949 01) — and have been run separately by Slovenská pošta since 1993
^[0-9]{5}$A Slovak PSČ is the 5-digit postcode Slovenská pošta uses to route mail, written as three digits, a space, then two more — for example 811 01 for Bratislava 1, the city centre. Like its Czech counterpart, the numbering originates in the single system Czechoslovakia adopted in 1973; Slovakia’s share of that block sits in the low 0xx and high 8xx–9xx ranges — bracketing Czechia’s 1xx–7xx middle — and has been run separately since the 1993 split. Anyone validating a Slovak shipping address, a checkout form, or a spreadsheet of customer records needs the PSČ in the correct 5-digit shape before it’s trusted.
Because the space sits in a fixed spot — after the third digit — a code that’s missing it, or has digits shifted across that boundary, produces a string that clearly doesn’t match the expected shape, well before anyone checks whether it’s actually in use.
How this validator works
This tool checks that the input is exactly 5 digits, accepted with or without the customary space after the third digit, entirely in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A PSČ carries no check digit, so matching the 5-digit shape is the most a client-side tool can confirm — not that Slovenská pošta has assigned it to a real post office or street. Confirming that requires Slovenská pošta’s own postcode lookup.
Scope: this page and tool cover format validation only — not address lookup or confirming a PSČ is currently in use.
PSČ FAQ
Is the Slovak PSČ the same system as the Czech PSČ?
They share a common ancestor. Both trace back to the single numbering block Czechoslovakia introduced in 1973. When the country split in 1993, Slovakia kept the codes already assigned within its territory — the low 0xx block (Žilina, Košice) and the high 8xx–9xx block (Bratislava, Nitra), bracketing Czechia's 1xx–7xx middle — and Slovenská pošta has administered them independently ever since.
What does PSČ stand for?
Poštové smerovacie číslo, literally 'postal routing number' — a 5-digit code written as three digits, a space, then two more, e.g. 811 01 for Bratislava 1, the city centre.
Does a correctly formatted PSČ mean it actually exists?
No. This tool only confirms the string is 5 digits in the right shape — it doesn't check it against Slovenská pošta's actual assignment list. Confirming a PSČ is real, and seeing which post office it covers, requires Slovenská pošta's own postcode lookup.