Boulder Campground

Carlyle Lake

🏕️ CampgroundCarlyle LakeIllinois⭐ 4.6 (445)

🟢 18 open windows as of Sep 19 — soonest Sat Sep 19–Tue Sep 22

Availability checked 8h ago · changes fast, verify before you drive

🐕 Dogs allowed — all 82 sites here that publish a pet policy say yes.

Per-site pet policy from Recreation.gov site details (RIDB), checked 3h ago.

Book / check availability →🧭 Directions

💡 In short

Boulder Campground in Illinois has 18 open booking windows on Recreation.gov right now, the soonest Sat Sep 19–Tue Sep 22. Reserve directly through the booking link above — cancellations go fast. To catch future openings the instant they appear, set a free CampSage cancellation alert.

📅 Open dates

Sat Sep 19 – Tue Sep 223 nightsbook these dates →sites #026, #029, #039, #044, #046, #057, #060, #064, #068

Sun Sep 20 – Wed Sep 233 nightsbook these dates →👥 5 in a row, BOULDER CAMPGROUND #050–BOULDER CAMPGROUND #054 next to each othersites #010, #012, #016, #018, #023, #024, #025, #028, #030, #033, #036, #037, #038, #042, #043, #045, #047, #048, #050, #051, #052, #053, #054, #058, #059, #061, #062, #063, #065, #070, #071, #072, #073, #074, #076, #078, #079, #081, #082

Sun Sep 20 – Tue Sep 222 nightsbook these dates →sites #019

Thu Sep 24 – Sun Sep 273 nights🗓 weekendbook these dates →sites #020

Mon Sep 21 – Thu Sep 243 nightsbook these dates →sites #001, #034, #040, #056

Tue Sep 22 – Fri Sep 253 nightsbook these dates →sites #035

Wed Sep 23 – Fri Sep 252 nightsbook these dates →sites #011

Fri Sep 25 – Mon Sep 283 nights🗓 weekendbook these dates →👥 BOULDER CAMPGROUND #052 & BOULDER CAMPGROUND #053 next to each othersites #015, #020, #043, #046, #048, #052, #053, #064

📷 What these sites look like

Photos of sites that are open right now, from recreation.gov. Angles vary by park — usually the site and its parking pad.

Campsite BOULDER CAMPGROUND #026 — A photo of Site 026 of Loop BOULDER CAMPGROUND at Boulder Ca — **Site BOULDER CAMPGROUND #026** · A photo of Site 026 of Loop BOULDER CAMPGROUND at Boulder CaJordan Smith

Campsite BOULDER CAMPGROUND #026 — Site 26 — **Site BOULDER CAMPGROUND #026** · Site 26USACE

Campsite BOULDER CAMPGROUND #029 — Site 29 — **Site BOULDER CAMPGROUND #029** · Site 29USACE

Campsite BOULDER CAMPGROUND #029 — A photo of Site 029 of Loop BOULDER CAMPGROUND at Boulder Ca — **Site BOULDER CAMPGROUND #029** · A photo of Site 029 of Loop BOULDER CAMPGROUND at Boulder CaJordan Smith

Campsite BOULDER CAMPGROUND #039 — A photo of Site 039 of Loop BOULDER CAMPGROUND at Boulder Ca — **Site BOULDER CAMPGROUND #039** · A photo of Site 039 of Loop BOULDER CAMPGROUND at Boulder CaJordan Smith

Campsite BOULDER CAMPGROUND #039 — Site 39 — **Site BOULDER CAMPGROUND #039** · Site 39USACE

Campsite BOULDER CAMPGROUND #044 — Site 44 — **Site BOULDER CAMPGROUND #044** · Site 44USACE

Campsite BOULDER CAMPGROUND #044 — A photo of Site 044 of Loop BOULDER CAMPGROUND at Boulder Ca — **Site BOULDER CAMPGROUND #044** · A photo of Site 044 of Loop BOULDER CAMPGROUND at Boulder CaJordan Smith

Campsite BOULDER CAMPGROUND #046 — Site 46 — **Site BOULDER CAMPGROUND #046** · Site 46USACE

Campsite BOULDER CAMPGROUND #057 — Site 57 — **Site BOULDER CAMPGROUND #057** · Site 57USACE

Campsite BOULDER CAMPGROUND #057 — A photo of Site 057 of Loop BOULDER CAMPGROUND at Boulder Ca — **Site BOULDER CAMPGROUND #057** · A photo of Site 057 of Loop BOULDER CAMPGROUND at Boulder CaJordan Smith

🔭 Planning further ahead?

We watch the next 60 days closely — that's where cancellations show up. recreation.gov takes bookings out to about March 2027, so there may be 2+ night stays past our window.

🏕️ About this campground

💵 $20–$40/nightStandard Electric🎒 biking🎒 boating🎒 car camping🎒 fishing🎒 hiking

Ratings

4.6★★★★★445 ratings

Star ratings from recreation.gov (they don't publish written review text). Read & leave reviews on recreation.gov ↗

💡 Insider tips from campers

❓ Boulder Campground FAQ

How do I reserve a campsite at Boulder Campground?

Boulder Campground in Illinois takes campsite reservations through Recreation.gov. On this page, use the “Book / check availability” button to open the live booking page, see which dates are free, and reserve your site.

How much does it cost to camp at Boulder Campground?

Campsite fees at Boulder Campground run about $20–$40/night, as listed by Recreation.gov. Exact rates vary by site type, number of campers, and season.

How can I get a spot at Boulder Campground when it's fully booked?

Popular campgrounds like Boulder Campground often fill months ahead, but campers cancel every day and those sites reopen for booking. CampSage checks availability for you and sends a free email the instant a cancellation opens — set an alert on this page and you can grab the spot before anyone else.

Is Boulder Campground a good campground?

Boulder Campground holds an average rating of 4.6/5 from 445 camper ratings on Recreation.gov. The full star breakdown is shown above.

Where is Boulder Campground located?

Boulder Campground is located in Carlyle Lake, Illinois. Tap “Directions” above for driving directions, or see nearby campgrounds lower on this page.

🔔 Get a free opening alert

We'll email you when a site opens at Boulder Campground.

🎯 Only these dates (optional): to

Only weekends (Fri/Sat nights)

🌙 Minimum stay (Pro):

Skip the 1-night midweek openings — only hear about stays worth the drive.

👥 Group size (Pro):

Camping with a group? Only hear about openings with that many sites NEXT TO EACH OTHER on the same dates — consecutive numbers in one loop, not just that many free somewhere in the park.

🚫 Skip site types (Pro):
No hookup/electric sites (tent or van camping)
No hike-in / walk-in / boat-in / backcountry sites
No group sites (solo/family camping)

Works where the booking system publishes per-site types (rec.gov campgrounds).

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📡 Follow these cancellations

Subscribe in your calendar or RSS reader to get openings here automatically.

📆 iCal feed · 📡 RSS feed

Running a camping/RV blog? Embed this widget free →

A live cancellation widget for Boulder Campground that updates itself — free, no account, no API key. The snippet includes a one-line credit under the widget; leaving it in is what keeps this free for everyone, and it tells your readers what they are looking at. Preview it.

<iframe src="https://campsage.app/camp/embed/boulder-campground-233433" width="340" height="280" loading="lazy" style="border:0;border-radius:14px" title="Boulder Campground cancellations"></iframe>
<p style="font:12px/1.5 system-ui,sans-serif;margin:6px 0 0">Live campsite availability for <a href="https://campsage.app/camp/site/boulder-campground-233433">Boulder Campground</a> · powered by <a href="https://campsage.app">CampSage</a></p>