- ISO 3166
CZ- Main language + region
cs-CZ- Currency
- CZK · Czech Koruna
- Region
- EMEA · EU/UK
Czechia
Czechia has 10.8M people, and 9.5M of them are online. Czech is the most widely spoken language at 98%, one of 5 languages CLDR lists here. Czech is official nationally. A product shipping here defaults to cs-CZ.
Market summary
Each figure carries its own world scale, so it reads without a second market beside it.
People online
9.5M
0%world median 81%100%
88% of 10.8M people use the internet, per the World Bank's 2024 figure. Estimated by multiplying CLDR population by that share.
Income per person
$35,917
Higher than 77% of 213 territories
GDP per capita in current US dollars, World Bank Open Data, most recent reported year. A rough guide to spending power, not revenue.
Can pay online
92%
0%world median 71%100%
Adults aged 15 and over holding a bank or mobile-money account, World Bank Global Findex 2024. Below half means a card-only checkout excludes most of the market.
Languages
5
Czech 98% · English 27% · Slovak 16%
Languages CLDR records here with a share of 0.1% or more. 1 of them is official nationally.
English proficiency
582
Very lowVery high
High proficiency on the EF EPI 2025 scale. The sample is self-selected online test takers. It never enters any score on this site.
Adult literacy
99%
0%world median 95%100%
Share of adults who can read, as recorded in CLDR territory data. Low literacy shifts a product toward icons, audio, and video before another language.
What people speak
Shares include second languages, so totals can exceed 100%.
CLDR records Czech in 2 territories and 13.2M speakers in total; Czechia holds 80% of them, and the rest come with the same translation. The Czech profile maps the whole footprint.
Day-one requirements
What the interface needs for the main language spoken here (cs-CZ).
Plural categories
4
Word-forms a translator writes for counted text, like English's "1 item" and "2 items".
Script family
Latin
Default system fonts cover this script on all major platforms.
Reading direction
Left-to-right
Standard. Use dir='auto' on user-generated content fields.
Date
21. dubna 2026
Short: 21.04.26
Time
18:30
Week starts Mon
Currency
1 234,56 Kč
1,234.56 in CZK · Czech Koruna
The engineering behind the flags: Plural rules: why each category needs its own translation