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Population & demographics
All demographic data for Caiazzo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Caiazzo.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Caiazzo.
Caiazzo is a medium-sized municipality in the province of Caserta, Campania region. With a population of 5077 inhabitants and a density of 137 per km², it covers an area of 37 km². The average declared income is 19.689 €.
Caiazzo in numbers: the analysis
The generational balance is in line with the norm: the ageing index of Caiazzo is 225 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 4,040 inhabitants for Caiazzo: an expected decline of 20.4% from today.
Compared with the provincial average of Caserta (about 8,745 residents per municipality), Caiazzo is a markedly smaller centre.
Among the 104 municipalities of the province of Caserta, Caiazzo ranks 55 by population.
The census record tells a story of long decline: in 1951 Caiazzo had 6,113 inhabitants; today (2026) it has 5,077 — 16.9% fewer.
Population Trend
Male/Female Ratio
Demographic Statistics
Demographic Indices
Births (recent years)
Historical Population (1951-present)
Marital Status (2025)
School-Age Population (2026)
Total 0-18 years: 793
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Caiazzo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/caiazzo-061009" title="Population pyramid of Caiazzo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/caiazzo-061009" alt="Population pyramid of Caiazzo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>