More than 40,000 lined the banks of the Foyle for Thursday’s parade and fireworks finale.
An estimated 120,000 people attended events over the festival’s eight days.
Mayor Michaela Boyle said the city “justified its reputation as the best place in the world to celebrate Halloween.”
“The festival plays a key role in marketing our region as a visitor destination with half of those who attended last year coming from outside the Council area and 23% of those were from outside the north.
“Sincere congratulations to Council’s Festival and Events team and all their partners on delivering an unrivalled programme across Derry and Strabane that included arts, music, food and family friendly entertainment.”
Aeidin McCarter, Head of Culture at Derry City and Strabane District Council, said the Halloween Festival is one that continues to grow each year.
“Our Halloween programme is one of the largest in Europe and the biggest in the UK and Ireland with up to 30,000 attending the Awakening the Walls trail each night this week and an estimated 40,000 people at last night’s climactic celebrations in Derry and Strabane.
“Our headline attractions such as Saurus and the Museum of the Moon again proved a massive hit with the public and the family entertainment and storytelling at all our venues were equally successful.
“The LegenDerry Halloween Food Village in the Heart of Samhain at Waterloo Place proved a particularly welcome addition to our offering this year, bringing together the best of local food and acting as the perfect pit stop for those taking in the city centre Halloween experience.
“Sincere thanks to all our partners for their support in helping deliver another world class Halloween experience and to the public for supporting the programme by attending in such huge numbers.”
The Derry Strabane Halloween programme is organised and funded by Derry City and Strabane District Council with support from the Tourism N. Ireland.
The festival was voted Best International Experience at the NI Tourism Awards this year and ran from Saturday October 26th until Friday November 1st.
The full programme for this year’s Halloween Festival is available online at www.derryhalloween.com.
‘Samhain Live’ coverage of the parade and fireworks can be viewed at Bbc.co.uk/nilive.
Jim Roddy, City Centre Manger, said it had been a “fantastic week for the city.”
“The whole week has been absolutely outstanding.
“This year has been much bigger and better than last year.”
He said it is likely the region would see an economic boon in excess of the £3.2m generated for the local economy during the 2018 festival.
“This is only going to get bigger and better, the promotion of this city across the world has been tremendous,” he added.
Highlights of this year’s Derry Halloween – which has The Other World Awakens as its theme – have included the Awakening the Walls trail and a first-ever LegenDerry Halloween food event