Marietta has posted no official trick-or-treat hours for Saturday, Oct. 31. Halloween Happenings at HarvestFest is Oct. 17; trunk-or-treats run Oct. 23-24.

Last checked Oct. 5, 2026. This page is updated each year. The city of Marietta has not posted official trick-or-treat hours for 2026; we will add them here if it does. Events are from the City of Marietta, Cobb County’s event calendar and Cobb EMC.

Halloween falls on Saturday, Oct. 31, in 2026. The city of Marietta does not set a citywide trick-or-treat time on its website for this year. If your neighborhood or homeowners association sets hours, those are the ones to follow.

For a daytime option, the city’s HarvestFest on Saturday, Oct. 17, includes a kids Halloween festival on the Square, and three trunk-or-treats around Marietta fall on Oct. 23 and 24.

Who to call

HarvestFest and Halloween Happenings, Saturday, Oct. 17

From the city’s HarvestFest page, on Historic Marietta Square, 9 a.m. to 5 p.m.:

  • Halloween Happenings kids festival, from 9 a.m., for children 12 and under. Come in costume with a trick-or-treat bag for candy, carnival games and inflatables.
  • Costume contest, 2 p.m.; pet costume contest, 3 p.m.
  • Touch-A-Truck, 9 a.m. to 2 p.m., with fire trucks, police cars and Public Works vehicles.
  • Pie eating contest, 11:30 a.m. for ages 6 to 12 and noon for 13 and up; free registration through the city.
  • Scarecrows in the Square on display around Glover Park, and an arts and crafts market.

Trunk-or-treats

Date Time Event Where
Friday, Oct. 23 6 to 8 p.m. Cobb County District Attorney’s Trunk or Treat, with the library Bookmobile RedBud Blossom Family Justice Center, 277 Fairground St. SE
Saturday, Oct. 24 11 a.m. to 2 p.m. Cobb County Department of Public Safety Trunk or Treat and Fall Festival Emergency Vehicle Operations Course, 1285 Al Bishop Drive
Saturday, Oct. 24 Noon to 2 p.m. Cobb EMC Trunk-or-Treat 1000 EMC Parkway

The Public Safety event is free, with candy from decorated vehicles, face painting, food trucks and displays from police, fire, 911, Animal Services and the Sheriff’s Office, Cobb County says. The District Attorney’s event is weather permitting, according to the library’s listing. Cobb EMC promises treats and balloon animals at its fifth annual event, according to its event page.

Holding a trunk-or-treat in Marietta? Send us yours through our contact page and we will add it.

Halloween night safety

Tips from Cobb EMC’s Halloween page:

  • Carry a flashlight or wear a glow necklace so drivers can see you.
  • Walk on sidewalks, or as close to the curb as possible where there are none.
  • Parents should check all treats before children eat them.

Two more things for this year: Halloween is a Saturday, so expect more people out after dark, and daylight saving time ends at 2 a.m. Sunday, Nov. 1.

What this means for you

  • No official hours have been posted for Oct. 31; check with your neighborhood.
  • Want daylight candy? Go to HarvestFest on Oct. 17 or a trunk-or-treat on Oct. 23 or 24.
  • Driving that evening? Slow down in neighborhoods from late afternoon on.

Related guides: fall festivals and pumpkin patches and things to do this month.

Frequently asked questions

What are the trick-or-treat hours in Marietta for 2026?

The city of Marietta has not posted official trick-or-treat hours for Halloween, Saturday, Oct. 31, 2026. Families set their own times; check your neighborhood or HOA.

Is there a Halloween event on Marietta Square?

Yes. HarvestFest on Saturday, Oct. 17, from 9 a.m. to 5 p.m. includes Halloween Happenings, a kids festival for ages 12 and under with candy, carnival games and inflatables, plus a 2 p.m. costume contest.

Where are trunk-or-treats in Marietta this year?

The Cobb County District Attorney’s trunk-or-treat is 6 to 8 p.m. Friday, Oct. 23, at 277 Fairground St. SE. Cobb County Public Safety’s is 11 a.m. to 2 p.m. Saturday, Oct. 24, at 1285 Al Bishop Drive, and Cobb EMC’s is noon to 2 p.m. the same day at 1000 EMC Parkway.

Is Halloween on a Saturday in 2026?

Yes. Oct. 31, 2026, is a Saturday, and daylight saving time ends the next morning, Sunday, Nov. 1.