🏋️ Official Rankings
10 Best Gyms in Johnston, IA (September 2026)
We compared 8 gyms serving Johnston and Polk County, Iowa, and ranked the top providers by verified reviews, ratings, and local reputation — 1,801 customer reviews in all.
The 8 listed below hold an average rating of 4.8 out of 5, led by The Little Gym of Johnston, IA. Updated for September 2026.
- Gyms ranked
- 8
- Average rating
- 4.8★
- Reviews analyzed
- 1,801
- Area code
- 515
The Little Gym of Johnston, IA
⭐ 5.0 · 124 reviews
5260 Merle Hay Rd, Johnston, IA 50131
Crossfit Merle Hay
⭐ 5.0 · 109 reviews
8700 Thomas Ave, Johnston, IA 50131
Flex Factory - West Des Moines
⭐ 4.8 · 489 reviews
3980 NW Urbandale Dr, Urbandale, IA 50322
Genesis Health Clubs - Merle Hay
⭐ 4.7 · 738 reviews
4349 Merle Hay Rd, Des Moines, IA 50310
Full Strength Fitness Johnston
⭐ 4.8 · 62 reviews
6210 NW 106th St, Johnston, IA 50131
Anytime Fitness
⭐ 4.7 · 161 reviews
8805 Chambery Blvd, Johnston, IA 50131
Power Life Yoga Barre Fitness - Johnston
⭐ 4.8 · 48 reviews
8839 Northpark Ct, Johnston, IA 50131
Gyms listed here serve Johnston, Polk County, and nearby ZIP codes including 50131.