Lenexa
- County:
- Johnson County
- County Seat:
- No
- Area (mi²):
- 34.072
- State:
- Kansas
Lenexa is a city located in Johnson County, Kansas. Lenexa has a 2026 population of 59,427. Lenexa is currently growing at a rate of 1.75% annually and its population has increased by 3.3% since the most recent census, which recorded a population of 57,529 in 2020.