🎉 Serving Round Rock & All Williamson County ✓ Licensed & Insured 📞 (737) 387-4420
Inflatable castle moonwalk and water slide rentals in Round Rock TX - serving 78664, 78665, 78681 - Williamson County party rentals
🏆 Round Rock's #1 Moonwalk & Bounce House Rental

Moonwalk Rentals
Round Rock, TX

Bounce houses, water slides, combo units & more - delivered and set up at your door. Serving Round Rock, Pflugerville, Hutto, Georgetown & all of Williamson County.

Licensed & Insured Operator
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Free Delivery & Setup
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Sanitized After Every Use
5-Star Rated
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Weekend Availability

What Is an Inflatable Castle Rental in Round Rock, TX?

An inflatable castle is an airtight vinyl or nylon structure kept inflated by a continuous electric blower, designed for children to jump, bounce, and play inside at parties and events. Inflatable castles are the primary product in the party rental industry - delivered to your backyard, set up by a professional crew, and picked up after your event.

In Round Rock, TX and across the Austin metro area, inflatable castles are most commonly called moonwalks - a Texas-native regional term that comes from the weightless, floating sensation children feel while jumping inside the inflatable chamber. Nationally the standard term is bounce house. Internationally the term is bouncy castle. All refer to the same party rental equipment category.

Inflatable Castle - Regional Names & Synonyms

Moonwalk
Texas (Austin, Round Rock, San Antonio, Houston)
Bounce House
National standard (US)
Inflatable Castle
US & International
Bouncy Castle
UK, Australia, Ireland
Jump House
Southern US
Moon Bounce
Mid-Atlantic US
Jumper
California & Southwest
Spacewalk
Some Texas markets

Four Types of Inflatable Castle Rentals in Round Rock TX

Every inflatable castle type is available for delivery throughout Round Rock and Williamson County.

Standard Castle (Moonwalk)

Classic bounce chamber - the original Texas moonwalk. Pure jumping fun for kids 3–12. Fits standard backyard lots in Forest Creek, Teravista & Avery Ranch.

Obstacle Castle

Multi-section inflatable obstacle course. The go-to for school carnivals near Round Rock ISD campuses, church festivals, and large HOA events.

Round Rock Party Rental Packages

The right inflatable castle setup for every occasion - birthday parties, holiday weekends, and fall events across Round Rock and Williamson County.

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Most Booked
Kids Birthday Party Package
Backyard Birthdays · All Ages
  • Choice of moonwalk, combo unit, or water slide
  • Delivery & setup to your Round Rock address
  • Full-day rental - up to 8 hours
  • Safety inspection before first bounce
  • Full teardown included
Book Birthday Package →
Limited Dates
Memorial Day Weekend
May 23–26 · Book Early
  • Water slide castles & combos available all weekend
  • Perfect for neighborhood block parties
  • Serving Round Rock, Pflugerville & Hutto
  • Delivery to parks & backyards
  • Same safety standards, holiday availability
Reserve Memorial Day →
Books Fast
July 4th Celebration
Independence Day · Peak Season
  • Water slide castles & giant combos available
  • Perfect before Old Settlers Park fireworks
  • Ideal for neighborhood & HOA July 4th events
  • Delivery across all Round Rock zip codes
  • Book 3+ weeks out - fills every year
Reserve July 4th Date →
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Cooler Weather
Fall Festival Package
September–November · Outdoor Events
  • Moonwalks & obstacle castles - perfect fall weather
  • Ideal for school carnivals & church fall festivals
  • HOA & neighborhood event specialists
  • Multiple units for large events
  • Serving all Williamson County fall festivals
Book Fall Festival →

All packages include delivery, setup, safety inspection & teardown. Serving Round Rock 78664 · 78665 · 78681 and all of Williamson County.

Our Moonwalk & Inflatable Lineup

Every unit is cleaned, safety inspected, and delivered by our professional team. We handle setup and teardown.

Combo inflatable castle bounce house and water slide rental Round Rock TX 78665 - Jumpin Joy Party Rentals
Most Popular
Combo Moonwalk

Inflatable bounce castle plus built-in water or dry slide in one unit. Our most-booked rental in Round Rock 78664 and 78665. Fits standard lots in Forest Creek, Teravista, and Walsh Ranch.

Bounce CastleBuilt-in SlideWet or Dry
View Combo Units →
15ft Kahuna Double water slide castle rental Round Rock TX - dual lane inflatable Jumpin Joy Party Rentals
Water Slide
15' Kahuna Double

Dual-lane shark-themed water slide castle - two riders race to the bottom. A summer staple for Round Rock birthday parties in Teravista, Avery Ranch, and Stone Canyon.

Dual Lane15 ft TallWater Slide
View Water Slides →
Giant Lava Rush water slide castle rental Round Rock TX - large event inflatable by Jumpin Joy Party Rentals
Giant Slide
Lava Rush Slide

Our biggest slide - the centerpiece for school carnivals near Round Rock ISD campuses, church festivals, and large HOA events near Old Settlers Park.

Giant SizeWet or DryEvents & Carnivals
Check Availability →
16ft Wave Rider water slide castle rental Round Rock TX - purple blue inflatable Jumpin Joy Party Rentals
Water Slide
16' Wave Rider

Sleek 16-foot wave-themed water castle. Fast, smooth ride - the top pick for summer birthday parties near Brushy Creek and Cat Hollow in Round Rock 78664.

16 ft TallWater SlideSummer Hit
View Water Slides →
🎈 View Full Castle Inventory 🎉 See Combo Castles

How to Book a Moonwalk in Round Rock TX

1
Choose Your Castle

Browse inflatable castle types - combo castles, water slide castles, or standard moonwalks. Match the unit to your yard and guest count.

2
Pick Your Date

Book 2–3 weeks ahead for summer weekends. Same-week availability sometimes open - call (737) 387-4420 for last-minute bookings.

3
Confirm & Deposit

Lock in your rental with a deposit online or by phone. We confirm same day. Or fill out the quote form and we'll get back to you within hours.

4
We Deliver & Set Up

Our team arrives at your Round Rock address, fully inflates the castle, stakes it, inspects it, and gives you the green light before the first child bounces.

Best Time to Rent a Moonwalk in Round Rock TX

Round Rock's party rental season runs nearly year-round. Here's when to book and what to expect each season.

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Spring Season
March – May

Perfect weather for moonwalk and bounce house rentals before summer heat peaks. Popular for end-of-school parties near Round Rock ISD and backyard birthdays throughout Williamson County.

💡 Book 1–2 weeks ahead for spring break weekends

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Peak Summer
June – August

The busiest rental season in Round Rock. Texas heat drives massive demand for water slide castles. Weekends near Old Settlers Park events and Dell Diamond games fill fast.

🔥 Book 2–3 weeks ahead - our busiest window

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Fall Events
September – October

Cooler temps make standard moonwalk and bounce castles ideal. Popular for school carnivals near Round Rock ISD campuses and church fall festivals across Williamson County.

💡 Great for large events - comfortable weather for all ages

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Holiday & Winter
November – February

Lower demand means easier availability. Texas winters are mild enough for outdoor inflatables on dry days. Best time to lock in summer dates before the rush.

💡 Book your summer castle now while inventory is open

Jumpin Joy Party Rentals inflatable castle fleet serving Round Rock TX and Williamson County - moonwalks water slides combo castles

Round Rock's Trusted Party Rental Team

We've been delivering moonwalks, bounce houses, and water slides across Round Rock and Williamson County for years. Our fleet is updated regularly, every unit is cleaned after each rental, and our team knows every neighborhood from Forest Creek to Teravista. See our full About Us page.

500+
Parties Delivered
15+
Units in Fleet
5★
Avg. Rating
Same
Day Quotes
🎈 See Full Inventory

Why Round Rock Families Choose Us

Concrete facts - not marketing copy - about what you actually get when you book with us.

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Sanitized Between Every Rental

Every unit is fully cleaned and sanitized after each use - not just wiped down. Your kids bounce on equipment cleaned specifically for your event.

After every single rental - no exceptions

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15+ Castles Always Available

A large enough fleet that your unit is available on your date. Combo castles, water slide castles, giant castles, and standard moonwalks.

15+ inflatable units in our active fleet

On-Time Delivery - Always

We arrive before your party starts. Your guests won't be watching us inflate while they're standing in the backyard. Setup is done before the first guest arrives.

Early arrival standard on every booking

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Licensed & Insured Operator

All rentals are provided by Jumpin Joy Party Rentals, who is fully licensed and insured in Williamson County, Texas. Every unit carries a current Texas Amusement Ride Compliance Sticker.

Licensed & insured — Jumpin Joy Party Rentals

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We Know Round Rock

From Forest Creek lot sizes to Teravista HOA setups to park permits at Old Settlers Park - we've delivered to every corner of Round Rock and know the terrain.

Hundreds of Round Rock deliveries completed

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Same-Day Quote Response

Call (737) 387-4420 or fill out the form and we respond same day - usually within hours.

Same-day response, 7 days a week

5-Star Reviews from Williamson County

Real feedback from Round Rock, Pflugerville, Hutto, and Georgetown families who trusted us with their parties.

★★★★★

"Set up perfectly in our Teravista backyard. The Kahuna Double was a huge hit - my son and his friends were on it for four hours straight. Crew was on time, professional, and had everything staked and ready before the first guest arrived."

SM
Teravista, Round Rock TX
★★★★★

"We rented the Lava Rush castle for our daughter's birthday in Forest Creek and it was the talk of the neighborhood. Kids lined up the entire party. Booking was easy, delivery was early, and the unit looked brand new and spotlessly clean."

JT
Forest Creek, Round Rock TX
★★★★★

"Best moonwalk rental in Round Rock, period. We've used this team three summers in a row for our Avery Ranch neighborhood block party. Always on time, always spotless, always professional. Won't use anyone else."

LR
Avery Ranch, Round Rock TX
5.0
Average rating from 47 Round Rock & Williamson County reviews

Every Corner of Round Rock TX

We've delivered moonwalks and inflatables to every corner of Round Rock. If you're in 78664, 78665, or 78681, we know your street.

Forest Creek78665
Teravista78665
Avery Ranch78681
Walsh Ranch78681
Stone Canyon78681
Brushy Creek78664
Cat Hollow78664
Chandler Creek78664
Sendero Springs78681
Mayfield Ranch78681
The Oaklands78665
Vista Oaks78681

Our Round Rock Inflatable Castle Delivery Promise

All rentals are provided by Jumpin Joy Party Rentals, who is fully licensed and insured in Williamson County, Texas. We deliver moonwalks, bounce houses, and water slides to every neighborhood in Round Rock, TX - zip codes 78664, 78665, and 78681. We set up at backyard birthday parties near Old Settlers Park, block parties in Forest Creek and Teravista, school carnivals near Round Rock ISD campuses, and community events near Dell Diamond and the Round Rock Premium Outlets. Every rental is fulfilled by Jumpin Joy Party Rentals and includes delivery, professional setup, safety inspection, and full teardown - no surprises, no shortcuts. This is Round Rock, and your party deserves a rental team that shows up right.

Serving Round Rock & All of Williamson County

Moonwalk, bounce house, and water slide deliveries throughout Williamson County and beyond.

Zip Codes We Serve

786647866578681 786607863478626 786137864176574 786537873778746
Round Rock ⭐
Pflugerville
Hutto
Georgetown
Cedar Park
Leander
Taylor
Manor
Liberty Hill
Austin
Buda
Kyle

Moonwalk Rental FAQ - Round Rock TX

Everything Round Rock and Williamson County families ask before booking their party rental.

What is a moonwalk rental in Round Rock TX?
A moonwalk is the Texas term for an inflatable bounce house or bouncy castle. In Round Rock TX and across the Austin metro, locals commonly call bounce houses "moonwalks" - a regional name that comes from the floating, weightless feeling kids get while jumping. The terms moonwalk, bounce house, inflatable castle, bouncy castle, and jump house all refer to the same party rental equipment.
How much does a bounce house rental cost in Round Rock TX?
Inflatable castle rentals in Round Rock TX range from $150–$350 for a standard moonwalk, $225–$400 for a combo castle with slide, and $200–$450 for a water slide castle. All prices include delivery, setup, and teardown. Request a free quote for current pricing.
What size moonwalk fits my Round Rock backyard?
Most standard Round Rock backyard lots in Forest Creek, Teravista, and Avery Ranch fit a 13x13 or 15x15 moonwalk. Combo units with slides need roughly 20x20 feet. Water slides need more open space - 15ft slides require about 25x25 feet of flat area. We'll recommend the right fit when you book.
Do I need a permit for a bounce house at a Round Rock park?
Yes - Round Rock parks require a permit and reservation for bounce house and moonwalk setups. Contact Round Rock Parks and Recreation at (512) 218-5540. Most parks need a power outlet or generator. Old Settlers Park has electricity at two locations. Rabb Park does not allow inflatables. Always confirm before booking.
What surface do you need to set up a moonwalk or bounce house?
Moonwalks and bounce houses can be set up on grass, packed dirt, pavement, and some indoor surfaces. Grass is preferred for staking. Pavement setups use sandbags. The area must be flat, level, and clear of overhead obstructions. Most units need a standard 110V outlet within 50 feet - or a generator for park setups.
Can bounce houses be used in rain or wind in Texas?
Bounce houses and moonwalks can run in light rain with supervision. They must be shut down in winds over 15–20 mph and never operated during lightning. If severe weather forces cancellation, we work with you to reschedule at no extra charge. Safety always comes first.
How long is the rental period for a moonwalk in Round Rock?
Standard moonwalk and bounce house rentals in Round Rock TX are for the full event day - typically 6 to 8 hours. We deliver before your event starts and return for pickup afterward. Extended periods are available. We arrive early so everything is fully inflated and safety-inspected before your first guest arrives.
How many kids can use a bounce house at once?
A standard 13x13 inflatable castle safely accommodates 4–6 children at a time. Larger combo castle units handle 6–8 riders simultaneously. Always follow the operator's capacity limits and supervise children during use. We provide capacity guidelines with every rental.
Are your moonwalks and inflatables licensed and insured in Texas?
Yes. All rentals are provided by Jumpin Joy Party Rentals, who is fully licensed and insured in Williamson County, Texas. In Texas, bounce houses and moonwalks are classified as Class B Amusement Rides requiring a current Texas Amusement Ride Compliance Sticker and minimum $1,000,000 liability coverage per occurrence. Equipment is sanitized between every rental. See our About Us page for more detail.
What is the difference between a moonwalk, bounce house, and bouncy castle?
They are all the same thing - different regional names for the same party rental equipment. Moonwalk is the Texas term (Round Rock, Austin, San Antonio, Houston). Bounce house is the US national standard. Inflatable castle is the international term. Bouncy castle is the British term. All describe an airtight inflatable where children jump and play.
What Round Rock neighborhoods do you deliver moonwalks to?
We deliver moonwalks and bounce houses to all Round Rock neighborhoods including Forest Creek, Teravista, Avery Ranch, Walsh Ranch, Stone Canyon, Brushy Creek, Cat Hollow, Chandler Creek, Sendero Springs, Mayfield Ranch, and The Oaklands - plus areas near Old Settlers Park, Dell Diamond, and the Round Rock Premium Outlets. Zip codes 78664, 78665, and 78681.
📋 Have More Questions? Contact Us

Get Pricing for Your Round Rock Party

Fill out the form and we'll get back to you same day - usually within a few hours. Or call (737) 387-4420 directly.

No spam, ever. We only contact you about your rental.

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You're All Set!

We'll reach out within a few hours to confirm availability and pricing for your Round Rock party rental.