HALLOWEEN HAPPENINGS * Monmouth Public Library Pumpkin Carving Contest -- Wednesday, Oct. 30, 10 a.m. to 8 p.m., Monmouth Public Library, 168 S. Ecols St., Monmouth. Categories for elementary school students, middle schoolers, high schoolers, adults and businesses. Drop off entries Wednesday; judging Thursday, Oct. 31, at noon, except "people's choice award" judging is all day. 503-751-0182.--* Dallas Trick 'N' Treat -- Thursday, Oct. 31, 3 to 6 p.m., Morrison School gym, 1251 Main St., Dallas. For children through age 12. Costume contests, treats and prizes. Hosted by Morrison School and Dallas Area Chamber of Commerce. Free admission; donations accepted. For more information: 503-623-2564; www.dallasoregon.org.--* Monmouth Business Association Halloween Spectacular -- Thursday, Oct. 31, 3:30 to 6:30 p.m. Downtown businesses in Monmouth host their third annual "Halloween Spectacular." Many Main Street businesses will hand out candy to trick-or-treaters. Maps of participating businesses available at Monmouth Public Library. Children's games at Petals & Vines hosted by Monmouth-Independence Community Preschool. For more information: Martha Zuck, 503-838-1773.--* Independence Public Library Halloween Spectacular -- Thursday, Oct. 31, 4 to 5 p.m., Independence Public Library, 175 Monmouth St., Independence. Families are welcome to stop by the library to decorate a trick-or-treat bag, then go downtown for treats from local merchants. Sponsored by the Independence Downtown Association. 503-838-1811.--* Dallas Retirement Village Trick or Treat -- Thursday, Oct. 31, 6 to 7:30 p.m., Dallas Retirement Village, 311 W. Ellendale Ave., 377 NW Jasper St. and 340 NW Brentwood St., Dallas. Preschool through grade-school children are welcome with their parents. The entry area of each building will have residents looking forward to giving treats out to children. Attendees are asked to stay in the living room front entry area. For more information: Karen Pederson, 503-623-5581.--* Halloween Fun at Heron Pointe -- Thursday, Oct. 31, 6 to 7:30 p.m., Heron Pointe Assisted Living, 504 Gwinn St., Monmouth. Games, prizes, giveaways, refreshments and trick-or-treat candy for families. Free. 503-838-6850.--* Valley Life Center Community Carnival -- Thursday, Oct. 31, 6 to 8 p.m., Valley Life Center, 1795 SE Miller Ave., Dallas. For children in grades 5 and under. Inflatable toys, games, hay rides, pony rides, candy and more. Concessions available. Free admission. 503-623-4116.--* Western Oregon University Halloween Mixer -- Thursday, Oct. 31, 6 to 8:30 p.m., Gentle House, 855 N. Monmouth Ave., Monmouth. For WOU students 21 and older. Cost: $10, includes two beers, snacks and photo booth. Must bring both your ID and WOU ID for admission. WOU Student Activities Board Halloween dance will follow event; tickets available at mixer. 503-838-8673; www.facebook.com/events/600756459963848/.--* Dallas Fire Department Halloween Safety Patrols -- Thursday, Oct. 31, 6:30 to 8 p.m. (times approximate), various Dallas neighborhoods. Dallas fire engines and medic units will visit neighborhoods as part of the department's trick-or-treat safety patrol that includes passing out Halloween candy. For more information: 503-831-3530.