Laconia
- County:
- Belknap County
- County Seat:
- No
- Area (mi²):
- 19.838
- State:
- New Hampshire
Laconia is a city located in Belknap County, New Hampshire. Laconia has a 2026 population of 17,310. Laconia is currently growing at a rate of 0.95% annually and its population has increased by 2.49% since the most recent census, which recorded a population of 16,890 in 2020.