Perhaps the most defining trait of the Czech couple aged 35 in 2021 was a hard-won, pragmatic optimism. They were too young to remember the communist era firsthand, but old enough to have heard the stories. They had seen their country join the EU, adopt the Euro (though still not in circulation by 2021), and become a global hub for manufacturing and tech.

Therefore, for the cohort of 35-year-old couples in 2021 (born around 1986), the fertility boom would have been happening among their slightly younger peers. The postponement of childbirth remains a powerful trend, with women increasingly likely to have their first child in their late 20s or early 30s, rather than their early 20s.

For Czechs born in the mid‑1980s, turning 35 in 2021 meant reaching a crossroads in family formation, career and personal life. The year 2021 was also the most powerful moment to examine the long‑term demographic, economic and emotional shifts that had been reshaping couple dynamics for decades—and that were now being both sharpened and temporarily distorted by the COVID‑19 pandemic. A 35‑year‑old Czech in 2021 belonged to a generation that delayed marriage, postponed childbearing, embraced unmarried cohabitation as a norm, and navigated relationships in a climate of rising educational attainment, regional disparities and pandemic‑induced stress.

While traditional roles sometimes persist, many 35-year-old couples in 2021 aimed for a more egalitarian split of household responsibilities and career focus.

The data from 2021 paints a complex picture. As demographic expert Robert Šanda noted, while the average number of children per woman is 1.57, this jumps to two for women who actually have children, confirming the two-child family model remains the ideal. However, he also highlighted that this average masks significant differences: married, divorced, or widowed women have almost two children each, while single women have roughly four times fewer, pointing to the strong link between partnership status and fertility.