Hacker / cybersecurity community
DEF CON 35 Las Vegas
Aug 5-8, 2027 · TBA (DEF CON 34 was LVCC West Hall)
Dates verified date source · Official site
to Sun, Aug 8, 2027
How full will Vegas be during DEF CON 35?
Packed: Strip rates typically spike. Book rooms 4-6 months out and lock private rooms early.
About 65,000 trade-show attendees are expected in town for DEF CON 35 and the 3 other tracked shows that overlap its dates. Week of Aug 2: see everything in town that week.
1 show(s) in this window have no published attendance, so the real number is higher.
Overlapping shows
- Black Hat USA 2027 Jul 31 - Aug 5, 2027 · Mandalay Bay Convention Center · ~23,000
- Ai4 2027 Aug 2-5, 2027 · The Venetian · ~12,000
- ASD Market Week - August 2027 Aug 3-5, 2027 · LVCC · ~30,000
Estimate = sum of the latest sourced attendance of every tracked trade show running on any of the same days. Method.
Suggested book-by dates for DEF CON 35
| What | Book by | Rule of thumb | Status (as of Oct 17) |
|---|---|---|---|
| Hotel room block | Feb 5, 2027 | 6 months before opening day | On time |
| Celebrity / headline talent | Feb 6, 2027 - Apr 7, 2027 | 120-180 days out | On time |
| Private dining rooms & buyouts | May 7, 2027 | 90 days out | On time |
| Ground transport / DMC | Jun 6, 2027 | 60 days out | On time |
Guidance only, counted back from opening day (Aug 5). In Packed or Sold-out weeks, book at the early end.
DEF CON 35 party venues & getting around
Hosting clients after the show floor closes? These spots are reserved for venues and transport partners near TBA (DEF CON 34 was LVCC West Hall). We list only sponsors that have confirmed show-week availability, and none are listed yet.
Restaurants with private rooms, nightclubs, rooftops and suites near TBA (DEF CON 34 was LVCC West Hall) can claim this spot for DEF CON 35 week.
$99 per show cycle (Standard show)
Buy this slot → · Ask firstHosting groups during DEF CON 35? Feature your buyout, private dining or hospitality suite here.
$99 per show cycle (Standard show)
Buy this slot → · Ask firstBlack car, party bus, shuttle and DMC partners: reach planners moving clients around TBA (DEF CON 34 was LVCC West Hall) during the show.
$99 per show cycle (Standard show)
Buy this slot → · Ask firstSources and notes
No official count is published. Community estimates for DC34 were ~24,500-26,000 (r/Defcon); not used. Cash-only badges, a casual crowd.
- Dates: https://defcon.org/
- Attendance: no verified figure, so this is left blank.
- Official site: https://defcon.org/
Spotted a change? Dates and venues are set by the organizer and can move. Always confirm on the official site.
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