A few facts about San Ildefonso
- San Ildefonso has a population of about 66,000.
- It's part of Central Luzon.
- It's about 49 km to Quezon City, the country's largest city.
- The nearest bigger city is San Fernando, about 28 km away.
- Towns nearby: Baliuag (15 km), Norzagaray (22 km) and Pandi (24 km).