Union Grove State Park
Open for the 2026 camping season. Campground operates April 1 through October 31. One south-side shower is currently closed for repairs. Reservations required via iowastateparks.reserveamerica.com.
About
Union Grove State Park sits on 262 acres in Tama County, centered around a 26-acre lake created in the 1930s by the Civilian Conservation Corps. The modern campground offers full hookup sites with electric (20/30/50 amp), water, and sewer connections, plus modern restrooms and showers. Two buddy sites accommodate larger groups. The campground operates April 1 through October 31 and requires advance reservations through the Iowa State Parks system. The lake supports a warm-water fishery with crappie, bluegill, channel catfish, largemouth bass, and walleye. Two boat ramps provide access for no-wake boating, and an unsupervised swimming beach offers summer recreation. Three miles of trails wind through woodlands, prairies, and wetlands, providing opportunities for hiking and birdwatching. Two modern ADA-accessible family cabins are available year-round for those preferring shelter camping. Open picnic shelters and shaded picnic areas near the lake can be reserved through the state parks reservation system.
Directions
Located at 1215 220th Street, Gladbrook, IA 50635 in Tama County, approximately 20 miles northeast of Marshalltown.
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | Yes |
| Wifi | — |
| Pets Allowed | Yes |
| Showers | Yes |
| Electric Hookups | Yes |
| Water Hookups | Yes |
| Sewer Hookups | Yes |
| Camp Store | — |
| Price | $30 - $90 |
Vehicle
| Max RV Length | 40ft |
| Max Trailer Length | — |
| Big Rig Friendly | No |
| Pull Through Sites | Yes |
Contact
| Union_Grove@dnr.iowa.gov | |
| Phone | +1 (641) 473-2556 |
Cell Service
| AT&T | None |
| Verizon | Yes |
| T-Mobile | None |
Availability
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