October in East Cobb: Avenue Live Fridays, Boo Bash Oct. 24, a Halloween Hike at East Cobb Park, a Sewell Mill photo show Oct. 29 and Marietta's parade Nov. 14.

Last checked Oct. 11, 2026. Rebuilt on the first of every month. Events come from Cobb County’s fall events roundup, its calendar highlights and Avenue East Cobb’s events page. Questions about county events: Cobb County, 770-528-1000.

October in East Cobb is Halloween month: a Saturday Boo Bash at Avenue East Cobb, a costumed hike in East Cobb Park and Halloween crafts at three county libraries, plus free Friday concerts through Oct. 30. Times and prices are as the organizers publish them; check the organizer’s link before you go. For this weekend only, see things to do this weekend; for galleries, theater and concerts, see arts and exhibitions this month.

What this means for you

  • Most of these events are free. Paid ones say so.
  • Several library and parks events need registration through the county link.
  • Trick-or-treat details, including trunk-or-treats, are on our trick-or-treat hours page.

Every Friday: Avenue Live

Free concerts run 6 to 8 p.m. every Friday through Oct. 30 in The Plaza at Avenue East Cobb, 4475 Roswell Road. Avenue East Cobb lists The Hearsay on Oct. 16, The Epics on Oct. 23 and Peach Work Productions on Oct. 30. Bring a chair. Coolers and outside drinks are not allowed. On Thursday, Oct. 22, the same plaza shows a free Monster Movie Night at 6 p.m., rain or shine.

Dated events in and near East Cobb

Updated Oct. 11: the Oct. 10 events have passed and are removed. Cobb County canceled its Oct. 10 events and closed county facilities that day because of the weather, its calendar highlights page says.

Saturday, Oct. 17.

  • Free pet microchipping clinic, 9 a.m. to 2 p.m., East Cobb Park, 3322 Roswell Road. No registration; Cobb residents only, the county says.
  • REWIND: Horror Edition, The Art Place - Mountain View, 3330 Sandy Plains Road, $25. Ages 8 to 15 from noon to 4:30 p.m.; ages 16 and up from 5 to 10 p.m.
  • Household hazardous waste drop-off, 9 a.m. to 1 p.m., Jim Miller Park, Marietta, with registration. Details on our trash and recycling page.

Saturday, Oct. 24. Boo Bash at Avenue East Cobb, 11 a.m. to 2 p.m. Trick-or-treating at about two dozen participating stores and restaurants, costume-party shows at 11:30 a.m. and 1 p.m., a DJ, face painting and a bounce house. Free.

Sunday, Oct. 25. Halloween Hike, 5:30 to 6:30 p.m., East Cobb Park. Wear a costume.

Tuesday, Oct. 27. Halloween Science Spooktacular with Georgia Highlands College, 3:30 to 4:30 p.m., Mountain View Regional Library, 3320 Sandy Plains Road.

Wednesday, Oct. 28. Sewell Mill Spook-tacular, 5 to 7 p.m., Sewell Mill Library and Cultural Center, 2051 Lower Roswell Road. Crafts, games and treats. Free.

Thursday, Oct. 29. Opening reception for the Cobb Photographic Society Members Show, 6 to 8 p.m., Sewell Mill Cultural Center, 2051 Lower Roswell Road. The show stays up through Dec. 19.

Saturday, Oct. 31. Halloween face painting, 3 to 4:30 p.m., East Cobb Library, 4880 Lower Roswell Road.

Worth the short drive

From the county’s fall roundup:

  • HarvestFest, Marietta Square, 9 a.m. to 5 p.m. Saturday, Oct. 17.
  • Cobb PARKS Fall Festival of Fun, 5 to 9 p.m. Saturday, Oct. 24, Jim Miller Park, 2245 Callaway Road, Marietta, with a $5 haunted house Oct. 24-25 and Oct. 28-31.
  • Cobb Public Safety Trunk or Treat, 11 a.m. to 2 p.m. Saturday, Oct. 24, 1285 Al Bishop Drive, Marietta. Free.

Early November

  • Friday, Nov. 6: the Marietta Square Art Walk, 5 to 9 p.m., the First Friday gallery night on the Square.
  • Wednesday, Nov. 11: Veterans Day. Cobb County offices and libraries are closed.
  • Saturday, Nov. 14: Marietta’s Veterans Day parade steps off at 10:40 a.m. on Roswell Street, with a noon ceremony in Glover Park and a 5K that morning. Details on our Veterans Day page.

Fall break camps

Cobb schools run conference week Oct. 13-16 with early release for elementary and middle schools. Cobb PARKS lists a mixed media art camp at The Art Place, 3330 Sandy Plains Road, among its fall break camps.

What this means for you

  • Fridays at Avenue East Cobb are the easiest free night out this month.
  • Oct. 24 is the busiest day: Boo Bash in the morning, the county festival in the evening.
  • November’s list goes up Nov. 1, with the Avenue East Cobb tree lighting on Nov. 20.
  • The Mt. Zion United Methodist Church pumpkin patch on Johnson Ferry Road is on our fall festivals page.

More: fall festivals and pumpkin patches and parks and trails in East Cobb.

East Cobb’s big annual events, each with its own page: the EAST COBBER Parade, the Taste of East Cobb and the Marietta Greek Festival.

Frequently asked questions

What is happening in East Cobb in October 2026?

Free Avenue Live concerts every Friday at Avenue East Cobb, Boo Bash there on Saturday, Oct. 24, a Halloween Hike at East Cobb Park on Oct. 25, and Halloween events at the East Cobb, Mountain View and Sewell Mill libraries.

When is Boo Bash at Avenue East Cobb?

Saturday, Oct. 24, from 11 a.m. to 2 p.m. in The Plaza at 4475 Roswell Road, with trick-or-treating at participating stores, a costume party and a DJ. Trick-or-treating goes ahead rain or shine.

Is there a free pet microchip clinic in East Cobb?

Yes. Cobb County lists a free pet microchipping clinic from 9 a.m. to 2 p.m. Saturday, Oct. 17, at East Cobb Park, 3322 Roswell Road. No registration is needed; it is for Cobb residents only.

What free things are there to do in East Cobb this weekend?

Avenue Live is a free concert from 6 to 8 p.m. every Friday through Oct. 30 in The Plaza at Avenue East Cobb. Our things to do this weekend page has the full weekend list.