La Porte City
- County:
- Black Hawk County
- County Seat:
- No
- Area (mi²):
- 2.558
- State:
- Iowa
La Porte City is a city located in Black Hawk County, Iowa. La Porte City has a 2026 population of 2,267. La Porte City is currently growing at a rate of 0.18% annually but its population has decreased by -0.48% since the most recent census, which recorded a population of 2,278 in 2020.