San Gregorio is a local holiday in 28 municipalities — 34,806 residents in the 2025 register. In 2026 it falls on 9 May; below, where and when it's celebrated.
Verified data
In 2026, the dataset records San Gregorio as a local holiday in 28 municipalities, accounting for 34,806 residents in the 2025 register. The most common date is 9 May 2026. 15 municipalities set it on another date.
This comparison uses only the official working calendars incorporated into the dataset for each year.
Demographic profile
Age, citizenship, birthplace and average-age structure from the 2025 Annual Population Census.
49.9% / 50.1%
12.2%
64.1%
23.7%
9%
10.7%
46.5 years
Comparison with Spain and with the aggregate of the 6 regions where it is observed. All five comparisons are population-weighted and use only the 2025 Annual Census. A positive sign means the covered population has a higher value than the benchmark.
| Demographic profile | Covered population | Compared with Spain | Compared with its 6 regions |
|---|---|---|---|
| Aged 0–14 | 12.2% | -0.8 pp | -1 pp |
| Aged 65+ | 23.7% | +3 pp | +2.9 pp |
| Foreign citizenship | 9% | -5.1 pp | -4.2 pp |
| Born outside Spain | 10.7% | -8.6 pp | -5.9 pp |
| Weighted mean age | 46.5 years | +2 years | +1.9 years |
The largest difference from Spain is in “Born outside Spain”: -8.6 pp.
Sex comes from the 2025 municipal register; all other metrics come from the 2025 Annual Census. Each percentage uses the total from its own statistical operation. INE municipal tables 68535 and 68541.
When
In 2026 it falls on Saturday 9 May in most municipalities. 15 move it to another date (when it lands on a weekend or by local agreement).
| Year | Main date | Municipalities |
|---|---|---|
| 2024 | Thursday, 9 May | 15 |
| 2025 | Friday, 9 May | 18 |
| 2026 | Saturday, 9 May | 28 |
Traceability
Official documents linked by the 2026 records. Dates can vary by territory; each municipality page preserves its specific source.
Population: official municipal-register figures at 1 January 2025. INE.
INE municipal tables 68535 and 68541.
Where it's a holiday
Its local holiday in 2026, by region. Each municipality links to its annual record and the available official source.
Together, they account for 34,806 residents in the INE municipal register at 1 January 2025.
Aragón13
AbizandaAlcalá de EbroBerbegalBoquiñeniGodojosMureroNavardúnOlvenaPina de EbroTerrerViciénVillamayor de GállegoVillanueva de JilocaOther regions
Castilla y León10
Comunitat Valenciana2
Andalucía1
Castilla-La Mancha1
La Rioja1
FAQ
In 2026, San Gregorio is mainly celebrated on 9 May 2026 (Saturday). Some municipalities move it to another date on the working calendar.
It's a local holiday in 28 municipalities in 2026, accounting for 34,806 residents in the 2025 register; mostly in Aragón (13 municipalities).
No. San Gregorio is a local-level holiday: it's only a non-working day in the municipalities that set it as their local festival; each keeps its official source.
Other holidays
Per-municipality data with its official source (regional gazette). Every date is verifiable on the municipality page. Data from festivos.io — CC BY 4.0.