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Justin's Diamond J RV Park

5 ReviewsAdd Review

Part of Tucson's desert landscape, Justin's Diamond J RV Park sits on the edge of undeveloped parkland with direct trail access to surrounding desert terrain. This private RV park operates year-round and accommodates rigs up to 50 feet with full hookups including electric, water, and sewer connections.

The park functions primarily as a long-term residence facility, with short-term visitors typically assigned gravel sites near the road. These sites lack picnic tables but provide necessary hookups for overnight stays. Most spaces are large but not clearly defined, requiring some navigation upon arrival. The office maintains irregular hours, with some campers reporting self-parking arrangements when staff is unavailable.

Desert vegetation surrounds the property, including various cacti and succulents native to the Sonoran Desert. Walking trails lead directly from the campground into adjacent public lands, providing immediate access to hiking without driving elsewhere. Norrie W. notes that "no real shade is available as the trees are desert spindly," a consideration for summer camping.

The facility includes laundry services, a gathering room, and recreational courts for pickleball and tennis. Cell service reports vary by carrier, with some reviewers noting strong Verizon coverage. Cash payment is required, as credit cards are not accepted. For extended desert exploration, campers can find additional places to camp near Cortaro within the broader Tucson area.

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Map & DirectionsJustin's Diamond J RV Park is located in Arizona near Cortaro

Detail location of campground
RV Park

Directions

From jct I-10 & I-19: Go 1-1/4 mi S on I-19 (exit 86) Ajo Way, then 8 mi W on Ajo Way, then 2-1/2 mi N on S San Joaquin Rd. 3451 South San Joaquin Road, Tucson, Arizona 85735, United States

Address

3451 S San Joaquin Rd
Tucson, AZ 85735

Coordinates

32.18199253 N
111.15261818 W

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Connectivity

Presented byT-MobileT-Mobile is introducing T-Satellite to extend coverage in the outdoors
  • signal strength bars
    T-Mobile5G
    Excellent Coverage
    Verified by 15 users
    Last on 5/9/26
  • signal strength bars
    Verizon5G
    Excellent Coverage
    Verified by 1 user
    Last on 3/17/26
  • signal strength bars
    AT&T5G
    Excellent Coverage
    Verified by 8 users
    Last on 5/9/26

Connectivity

Presented byT-MobileT-Mobile is introducing T-Satellite to extend coverage in the outdoors
  • signal strength bars
    T-Mobile5G
    Excellent Coverage
    Verified by 15 users
    Last on 5/9/26
  • signal strength bars
    Verizon5G
    Excellent Coverage
    Verified by 1 user
    Last on 3/17/26
  • signal strength bars
    AT&T5G
    Excellent Coverage
    Verified by 8 users
    Last on 5/9/26

Access

  • Drive-In
    Park next to your site

Site Types

  • RV Sites
  • Standard (Tent/RV)
  • Cabins

Features

For Campers

  • Market
  • Picnic Table
  • Firewood Available
  • Showers
  • Electric Hookups
  • Toilets

For Vehicles

  • Sewer Hookups
  • Water Hookups
  • 50 Amp Hookups
  • Big Rig Friendly

Contact

General Info

Reservations

Drive Time

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Reviews5 Camper Reviews - Justin's Diamond J RV Park

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3.5

out of 5

5 Reviews

Many visitors appreciated the spacious sites and proximity to Saguaro National Park trails. Some campers noted concerns about limited amenities and inconsistent office availability, though helpful staff received praise when accessible.

Reviewed Nov. 11, 2024

The Nicest People

I love Tucson. The big plus about this park (other than the really nice people) is that is borders park land and there are SO many acres and miles of trails right out of the campground. The grounds and the surrounding desert have an abundance of interesting succulents and cacti and gorgeous mountains all around. Most of the folks here are long termers- we only stayed for 4 days. The sites for short termers are by the road and not the best, just gravel sites with full hookups, but sufficient for our needs. No picnic tables. No public toilets. Laundry facilities and a gathering room.

Site3
Month of VisitNovember
  • Review photo of Justin's Diamond J RV Park by patty W., November 11, 2024
  • Review photo of Justin's Diamond J RV Park by patty W., November 11, 2024
  • Review photo of Justin's Diamond J RV Park by patty W., November 11, 2024
Reviewed Mar. 15, 2022

Nice clean quiet well kept RV Park

We stayed there for a week in February 2022 visiting family and friends, and exploring the attractions of the area.

Justin’s is a busy place and office staff were almost always on the phone trying to arrange nights of availability or help the travelers any way that they could. When we called they could accommodate us but we ended up in 3 different spots over our week’s stay as there were reservations for the spots that they needed to honor. For us it wasn’t a big deal as we were in a 31’ Minihome. When no space was available I overheard them offering free dry camping until a spot opened up. The business has a very capable and customer focused staff.

The RV Park is clean and capably run. We really enjoyed our stay there and we would return again.

An interesting feature of the Park is that it has walking trails that lead to the Saguaro National Park, but the area around the RV Park is rich with the native plants of the area all on its own. If you travel through Tucson, Saguaro National Park’s Desert Museum is a recommended place to go.

SiteD47, C10, H11
Month of VisitFebruary
Reviewed Sep. 15, 2021

Rather disorganized

Sites are not well defined but once you know where to park the sites are quite large. No real shade is available as the trees are desert spindly. There has been no one in the office and we were told to just park anywhere.

SiteB24
Month of VisitSeptember
  • Review photo of Justin's Diamond J RV Park by Norrie W., September 15, 2021
  • Review photo of Justin's Diamond J RV Park by Norrie W., September 15, 2021
  • Review photo of Justin's Diamond J RV Park by Norrie W., September 15, 2021
Reviewed Dec. 18, 2020

Have to pay cash or check

Justin's Diamond J doesn't allow credit card payment and doesn't have online reservations. It's adult only and had a bunch of restrictions. No use of washers/dryers in RVs, no streaming/skyping, no electric heaters. Breed restrictions on pets. See photo for brochure. There are pickleball/tennis courts, a dog area, horse shoes and bocce ball. Sites are full hookup. Premium sites offer better views and have more privacy.

  • Review photo of Justin's Diamond J RV Park by Ashley M., December 18, 2020
  • Review photo of Justin's Diamond J RV Park by Ashley M., December 18, 2020
Reviewed Jun. 30, 2020

Great Sky Views

Great views of the sky at night and very quiet but we were never able to get in touch with anyone from the office. Nice spacious sites but the common areas really need some love. There’s no pool which is a must have in Arizona’s heat. Great Verizon cell signal no WiFi, or could never get in touch with anyone to get a code.

  • Review photo of Justin's Diamond J RV Park by Keisha D., June 30, 2020
  • Review photo of Justin's Diamond J RV Park by Keisha D., June 30, 2020
Showing results 1-5 of 5 reviews

Frequently Asked Questions

What amenities are available at Justin's Diamond J RV Park?

Justin's Diamond J RV Park offers spacious RV sites with unobstructed views for stargazing. The park features pickleball and tennis courts, though there is no swimming pool. The property borders public lands with miles of hiking trails, offering easy access to explore the desert landscape rich with cacti and mountain views. The park has good Verizon cell signal, though WiFi availability is limited. Common areas exist but may not be extensively maintained. The adult-only park is generally quiet and peaceful, making it suitable for mature travelers seeking a tranquil desert experience.

What do reviews say about Justin's Diamond J RV Park?

Justin's Diamond J RV Park offers spacious sites with beautiful desert landscapes and excellent night sky views. The park borders natural lands with extensive hiking trails featuring diverse desert flora and cacti. It's an adult-only facility with a quiet atmosphere. Staff responsiveness varies, with some visitors noting difficulty reaching office personnel while others report helpful service. The park has certain restrictions including no electric heaters, streaming limitations, and pet breed restrictions. Many appreciate the convenient access to Tucson attractions and the natural surroundings, though some mention that common areas could use improvement.

How do I make reservations at Justin's Diamond J RV Park?

To make reservations at Justin's Diamond J RV Park, you'll need to contact the office directly by phone as they don't offer online reservation capabilities. Be aware that the park doesn't accept credit card payments, so alternative payment methods will be necessary. The office staff handles reservation inquiries, though response times may vary depending on how busy they are. When calling, be prepared to discuss your desired dates, RV specifications, and understand their adult-only policy and various restrictions. It's advisable to call well in advance, especially during peak seasons, as this is a popular destination near Tucson.

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