Diamond Mountain Casino & Hotel is a tribal casino hotel in Susanville, California, with a 24-hour casino and a 70-room, smoke-free lodge hotel next door. Its strongest selling point is convenience: lodging, dining, and casino entertainment in one overnight stop. I see it as a better fit for Susanville visitors and travelers exploring northeastern California than for someone seeking a sprawling resort. The main caution for smoke-sensitive visitors: the hotel’s smoke-free designation does not establish the smoking policy on the gaming floor.
Diamond Mountain Casino & Hotel at a glance
| Address | 900 Skyline, Susanville, CA 96130 |
|---|---|
| Property type | Tribal casino and lodge hotel |
| Casino hours | 24 hours daily |
| Minimum gambling age | 18 |
| Hotel | 70 rooms and suites combined |
| Poker room | No |
| Retail sportsbook | No |
| Published dining hours | 7:00 a.m. to 10:00 p.m. |
| Smoking | Smoke-free hotel; ask separately about the casino floor |
| EV charging | Tesla chargers advertised; confirm compatibility, access, and pricing |
| Telephone | 1-877-319-8514 |
| Official website | Diamond Mountain Casino & Hotel |
| Information updated | October 15, 2026 |
What kind of casino is Diamond Mountain?
Think regional casino hotel, not miniature Las Vegas. Diamond Mountain’s appeal is having lodging, food, and gambling together in Susanville, especially when the rest of your trip involves the surrounding outdoors. The hotel is next door to the casino, rather than a guest-room tower above the gaming floor.
The California Gambling Control Commission’s May 22, 2025, agenda identifies the property with the Susanville Indian Rancheria.
My take: Diamond Mountain makes more sense as part of a Susanville stay than as the centerpiece of a resort vacation. If gambling is the sole reason for a long drive, confirm your preferred games before committing. For other options, see our guide to California casinos.
Casino games: what to expect
The casino operates around the clock, but individual games and services may have separate schedules. Casual visitors benefit from flexible hours; anyone traveling for a specific machine or live table needs more detail.
Slots and video poker
Caltrans’s 2023 Lassen County economic forecast estimated the casino’s slot inventory at approximately 250 machines. Treat that dated third-party estimate as background, not a current count or a guarantee of a particular title.
I would ask about the game and denomination you want rather than simply whether there are plenty of machines. Video poker players should check the actual paytable before playing: a familiar game name does not guarantee the same return from one machine to another. Likewise, a low slot denomination does not necessarily mean a small total wager.
Table games
If tables are essential to your visit, call for the current live-game lineup, table hours, and minimum wagers. A 24-hour casino schedule is not a promise that a particular table will be open when you arrive.
Poker room and sportsbook
Diamond Mountain has no dedicated player-versus-player poker room or on-property retail sportsbook. Video poker and poker-themed table games are not poker rooms, and sports shown on television do not indicate that betting is available.
Hotel rooms and overnight stays
The hotel advertises 70 rooms and suites combined. Choices include deluxe rooms, suites, business suites, ADA-accessible rooms, and spa or whirlpool rooms. Its lodge-style setting makes the room a practical base for your trip, with casino entertainment nearby.
I would compare it with other Susanville lodging first, then decide what staying beside the casino is worth. That convenience is useful, especially if your evening includes drinks, but it should not replace a comparison of final booking totals.
The hotel is smoke-free. If avoiding smoke is a deciding factor, ask specifically about the casino floor and the route between your room and other facilities.
- Room features: Confirm the bed configuration and whether the whirlpool or suite features you want belong to your booked category.
- Accessibility: Ask about the specific bathroom, transfer, and access features you need.
- Total price: Get the cost including taxes and mandatory charges, plus any incidental deposit.
- Booking terms: Check the cancellation deadline and check-in and check-out times on your reservation.
Restaurants and dining hours
Diamond Mountain advertises breakfast, lunch, and dinner from 7:00 a.m. to 10:00 p.m., along with a Coffee Bar. Check the current menu and kitchen schedule if an early departure, late arrival, or dietary requirement will determine where you eat.
A 24-hour casino does not mean 24-hour dining
The published dining window covers 15 hours daily, calculated from the 7:00 a.m. opening and 10:00 p.m. closing. My practical advice: eat before the kitchen closes rather than assuming an open gaming floor comes with a late-night meal.
Gamboool original analysis
We assembled the comparison below from published information and our calculations. These are selected examples, rather than measured gambling sessions or a representative survey.
| Detail | Published information |
|---|---|
| Diamond Mountain casino: Published operating schedule versus dining schedule | The casino advertises 24-hour operation, while dining has a separate service window. |
| Diamond Mountain dining: Published service hours | Breakfast, lunch, and dinner are advertised from 7:00 a.m. to 10:00 p.m.; this is narrower than the casino’s operating schedule. |
| Diamond Mountain hotel: Smoking policy and advertised lodging classification | The operator describes the hotel as smoke-free and 3-Diamond. This passage does not establish the casino-floor smoking policy. |
| Diamond Mountain hotel: Published room inventory | The operator advertises 70 rooms and suites combined, rather than 70 rooms plus an unspecified number of suites. |
| Diamond Mountain hotel: Advertised room-category choices | The listed choices distinguish deluxe rooms, suites or business suites, ADA-accessible rooms, and spa or whirlpool rooms; no category-specific prices are supplied. |
| Diamond Mountain hotel: Relationship to casino | The operator describes casino access as next door, a useful distinction from assuming the gaming floor is inside the lodging area. |
| Diamond Mountain hotel: Advertised supporting amenities | The hotel lists a fitness center, Coffee Bar, and flexible event space; the passage supplies no access charges or operating hours. |
| Diamond Mountain property: Additional advertised conveniences | Tesla chargers, a weight room, free water, and a barber and salon are advertised. Only water is explicitly described as free. |
| Diamond Mountain property: Published address and contact number | The official site lists 900 Skyline, Susanville, CA 96130, and 1-877-319-8514 for direct inquiries about availability, prices, and policies. |
| Diamond Mountain Casino & Hotel: Tribal identification in state regulatory material | The California Gambling Control Commission’s May 22, 2025, agenda identifies the property with the Susanville Indian Rancheria. |
| Calculation | Result | Takeaway |
|---|---|---|
| Published dining-service window compared with round-the-clock casino access | 15 hours of published daily dining service | Plan meals within the published dining window; round-the-clock casino access does not mean round-the-clock food service. |
Research references: dmcah.com, cgcc.ca.gov.
Method: Published inputs collected 2026-10-15. Illustrative assumptions are labeled, and the full calculation inputs remain in the saved research record. These examples support planning; they do not predict a particular session.
Confirm the Coffee Bar’s separate hours before treating it as an overnight fallback. Event meals and promotions should also be checked for your dates rather than assumed to be everyday offerings.
Amenities and entertainment
The property advertises a fitness center, flexible event space, Tesla chargers, and a barber and salon. Confirm availability, access conditions, and charges if any of these will influence your booking.
Whirlpool rooms are a lodging option, not evidence of a separate full-service spa. Likewise, Tesla charging does not establish connector compatibility, charging speed, availability, or pricing.
Check the event calendar for your dates. A scheduled show or party can add a reason to stay, but an event listing does not mean entertainment is available every evening.
Directions, parking, and trip costs
Use 900 Skyline, Susanville, CA 96130, for navigation. Call 1-877-319-8514 for arrival arrangements rather than assuming transportation comes with a hotel reservation.
- Parking: Ask about charges, overnight permission, and space for an RV or trailer. A parking space is not a campsite with hookups.
- Airport transportation: Arrange it explicitly rather than relying on an assumed hotel shuttle.
- Winter travel: Check road conditions for your route and allow time for weather delays.
- Identification: The minimum gambling age is 18. Bring valid government-issued photo identification.
Budget using the full room total for your actual dates, then add meals, transportation, and any charging costs. Keep gambling money separate. A discounted room does not make extra gambling a saving.
Rewards and promotions
The property references Diamond Club rules and a player portal. Ask about current enrollment terms, eligible play, redemption rules, and expiration dates before counting an offer toward the value of your visit.
My rule with casino offers is to price the trip without them first. A promotion is useful when it reduces the cost of something you already wanted, not when it persuades you to spend more to qualify.
Who should choose Diamond Mountain?
Diamond Mountain suits travelers who want a Susanville base with casino entertainment next door rather than a resort-centered vacation. Its smoke-free lodge hotel, varied room categories, and on-site dining make an overnight stop appealing, particularly when outdoor sightseeing is also on the itinerary. I would choose another property if extensive dining and recreation are central to the trip, or if guaranteed smoke-free gaming is essential, since the hotel’s smoking policy does not establish conditions on the casino floor.
Frequently asked questions
Is Diamond Mountain Casino open 24 hours?
Yes. The casino operates 24 hours daily. Dining and other services have separate schedules.
How many hotel rooms does Diamond Mountain have?
The hotel advertises 70 rooms and suites combined, including deluxe rooms, suites, accessible rooms, and spa or whirlpool rooms.
How old do you have to be to gamble?
The minimum gambling age is 18. Bring valid government-issued photo identification.
Is Diamond Mountain smoke-free?
The hotel is advertised as smoke-free. Ask separately about the casino floor before assuming the policy applies throughout the property.
Does Diamond Mountain have a poker room or sportsbook?
No. It has neither a dedicated player-versus-player poker room nor an on-property retail sportsbook.
Can you eat there late at night?
The published dining hours are 7:00 a.m. to 10:00 p.m. Confirm service for your date; the 24-hour casino schedule does not establish overnight dining.
Does Diamond Mountain have EV charging?
Tesla chargers are advertised. Confirm compatibility, access, availability, and pricing before depending on them.
Sources
The official property website, California Gambling Control Commission agenda, and Caltrans county forecast are linked at their relevant uses above. Dining schedules, promotions, and booking terms can change, so confirm the details that determine your trip directly with the property.
Poker room and sportsbook
There is no dedicated poker room or on-site sportsbook.