Bounce House Rentals in Wentzville, MO

Wentzville's Homegrown Bounce House & Party Rental Company

Backyard Party Rentals was born right here in Wright City in 2019, when Tyler and Amanda Koester started with just two units — a bounce house and a slide — with no big plans, just a desire to bring some fun to family and friends. Word spread fast, the business grew faster, and today we're proud to be one of the most trusted inflatable rental companies in St. Charles County.

As parents of three, we understand exactly what it takes to pull off a great event. Every rental comes with professional delivery, setup, and a crew that genuinely cares about your day going perfectly. Five years and 311+ five-star Google reviews later, we’re still just two people from Wright City trying to throw the best parties in St. Charles County.

The Wentzville Party Rental Experts — Here’s What We Know About Your City

We’ve been delivering bounce houses and party equipment throughout Wentzville since 2019. With nearly 49,000 residents and a 27% population increase since 2018, Wentzville is Missouri’s fastest-growing major city — and one of only 50 fastest-growing affordable cities in the entire country according to GoBankingRates. Population has grown over 536% since 2000. New neighborhoods, growing schools, and an expanding community events calendar mean more parties, more field days, and more gatherings than ever.

The Wentzville R-IV School District

The Wentzville R-IV School District has been Missouri’s fastest-growing school district for two consecutive decades. With 18,000+ students across 22 campuses, the district operates four high schools — Timberland, Holt, Liberty, and North Point — five middle schools, and fourteen elementary schools. Elementary schools in Wentzville include Boone Trail, Lakeview, Journey, Peine Ridge, Wabash, Stone Creek, and Heritage Intermediate. We serve every school in the district for field days, PTO carnivals, end-of-year celebrations, and fundraisers. Full liability insurance and COI provided at no charge — just let us know when booking and it’s ready before your event.

Wentzville’s Parks System

The City of Wentzville Parks & Recreation maintains 9 parks throughout the city. Progress Park houses the recreation center, gym, fitness center, outdoor pool, and Progress Park Center — the administrative hub of city recreation. Heartland Park is a community favorite with trails, playgrounds, and open green space. Peruque Valley Park features ball fields and picnic areas. Bicentennial Park, Fireman’s Park, Memorial Park, and Northview Nature Park round out the system. For events at any Wentzville city park, we provide our COI and any documentation the Parks Department requires.

Rotary Park — St. Charles County’s Event Hub

Rotary Park (2577 W. Meyer Road) is a 72-acre St. Charles County park just off I-70 that serves as one of the region’s most active event venues. It’s home to the St. Charles County Fair every July — the county’s biggest annual event with carnival rides, livestock shows, live music, and a rodeo — and the St. Louis Renaissance Festival, which draws 50,000+ visitors over seven weekends each fall (September–October). The park features an amphitheater, a 5-acre fishing lake, picnic sites, playgrounds, and the Holiday Night Lights drive-thru display in December. We deliver equipment for private and organized events at Rotary Park and provide full COI for St. Charles County Parks-managed events.

Wentzville Annual Events & Festivals

Wentzville’s community calendar is packed year-round. Wentzville Days is the city’s signature three-day festival held every May in Historic Downtown Wentzville — free admission, food and craft vendors, live music, carnival rides, and kids activities. The Fourth of July Celebration features a morning parade and free fireworks at Progress Park (9:30pm). The summer Outdoor Movie Series and family-friendly Easter EGGstravaganza round out a spring and summer calendar that keeps Wentzville families busy all season. In fall, the St. Charles County Fair and the St. Louis Renaissance Festival draw tens of thousands to Rotary Park. The Holiday Night Lights drive-thru display at Rotary Park closes out the year from late November through December. Every one of these events is an opportunity for organizers to add interactive attractions — and we’re the rental company that Wentzville trusts to deliver them.

Wentzville Neighborhoods & Yards

Wentzville has a wide range of neighborhoods — from established communities near Progress Park and Historic Downtown to newer subdivisions in Heartland, Meadow Brook, and Summit Ridge. Most Wentzville yards easily accommodate our bounce houses, water slides, and obstacle courses. Grass is our first choice for setup — we use ground stakes to anchor everything securely. Each inflatable needs one standard 110v outdoor outlet within about 50 feet. No nearby outlet? We rent generators. For indoor setups at Progress Park Center, the WREC, or any gym floor, we use sandbags and can work with any venue.