The most valuable LEGO Duplo set today is 4785 Black Castle, worth $1,736 new and sealed. This list covers sets released between 1976 and 2014, and every one of them has retired. The middle set on the list is worth about $489. The Castle line has the most sets here. Sets from the 2000s make up about 55% of the list. Duplo bricks are twice the size of a LEGO brick in every direction and have been made since 1969. Duplo sets get played with, so sealed boxes are scarce, and castle, pirate and train sets that cross over with collected System themes carry the most value.

Below are the most valuable LEGO Duplo sets on the secondary market today, ranked by their current value new and sealed.
Most valuable LEGO Duplo set
4785 Black Castle $1,735.54
Highest growth set
511 Building Set +13575.27%
Set with the most minifigures
2751 Egg Fun 9 minifigures
Most owned set
10875 Cargo Train

4785 Black Castle

Theme / Subtheme Duplo / Castle
Year 2005
Pieces / Duplo figures 380 / 6
Availability Retired
It features a buildable castle with turrets, arches, grates, flaming torches, a dragon, six knight figures with headgear and swords, a gold-filled treasure chest, a working gate, and fence elements to create a dragon cage. It includes one good knight on a DUPLO dragon and five evil dragon knights.
4785 LEGO Duplo Black Castle
Retail $99.99
Value $1,735.54
Growth  +1635.7%
Annual growth 10.6%

2670 Water Park

Theme Duplo
Year 1995
Pieces / Duplo figures 42 / 5
Availability Retired
The set builds a waterfront play area on a raised 24 x 24 baseplate with a ramp, and includes a boat, fences, a yellow arch with skylight, vegetation, and accessories such as a crate, video camera, and a bucket-of-fish printed brick.
2670 LEGO Duplo Water Park
Retail $19.99
Value $793.10
Growth  +3867.5%
Annual growth 9.8%

5609 Deluxe Train Set

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 116 / 3
Availability Retired
It features a cargo train with realistic sound effects, tracks, a crane with a working hook, a conveyor belt and a gas station.
5609 Duplo LEGO Ville Deluxe Train Set
Retail $119.99
Value $749.99
Growth  +525.0%
Annual growth 9.3%

4777 Knights' Castle

Theme / Subtheme Duplo / Castle
Year 2004
Pieces / Duplo figures 164 / 4
Availability Retired
It contains a castle with a cauldron of bricks on top and a catapult.
4777 LEGO Duplo Knights' Castle
Retail $49.99
Value $743.34
Growth  +1387.0%
Annual growth 6.8%

4864 Castle

Theme / Subtheme Duplo / Castle
Year 2008
Pieces / Duplo figures 115 / 3
Availability Retired
It includes two Good Knights, and one Dragon Knight DUPLO figures.
4864 LEGO Duplo Castle
Retail $79.99
Value $631.55
Growth  +689.5%
Annual growth 7.7%

7880 Big Pirate Ship

Theme / Subtheme Duplo / Pirates
Year 2006
Pieces / Duplo figures 60 / 4
Availability Retired
It features a floating pirate ship with a working cannon, winch, plank, sails, treasure, and a brig for prisoners, along with pirate crew figures.
7880 LEGO Duplo Big Pirate Ship
Retail $99.99
Value $626.74
Growth  +526.8%
Annual growth 10.7%

10565 Creative Suitcase

Theme Duplo
Year 2014
Pieces 135
Availability Retired
It features 2 wagon bases, decorated eye bricks, and a variety of classic DUPLO bricks for creating characters and animals. It includes a cardboard suitcase for easy storage and transport.
10565 LEGO Duplo Creative Suitcase
Retail $59.99
Value $598.47
Growth  +897.6%
Annual growth 11.7%

081 Train Station

Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 53 / 5
Availability Retired
The set builds a simple train station scene with a station structure and assorted accessories for role play.
081 LEGO Duplo PreSchool Train Station
Retail $5.50
Value $551.40
Growth  +9925.5%
Annual growth 9.7%

5639 Family House

Theme / Subtheme Duplo / LEGO Ville
Year 2009
Pieces / Duplo figures 71 / 4
Availability Retired
It features a house with a stroller, swing, sleeping bags, and a kitchen. It includes LEGO DUPLO Mom, Dad, and baby figures, four beds, a bath tub, and kitchen components.
5639 Duplo LEGO Ville Family House
Retail $69.99
Value $548.44
Growth  +683.6%
Annual growth 8.5%

2689 Savannah Animals

Theme Duplo
Year 1994
Pieces / Duplo figures 28 / 3
Availability Retired
The build centers on a printed 16 x 24 savannah baseplate with a pond, tree elements, and a selection of animals including adult and baby elephants, adult and baby giraffes, and a monkey.
2689 LEGO Duplo Savannah Animals
Retail $12.99
Value $526.70
Growth  +3954.7%
Annual growth 9.0%

2741 Electric Train Starter Set

Theme / Subtheme Duplo / Trains
Year 1996
Pieces / Duplo figures 34 / 2
Availability Retired
The set features a battery-powered steam-style locomotive with a dedicated locomotive base and an action “reverse” brick, plus a short loop of curved and straight track.
2741 LEGO Duplo Electric Train Starter Set
Retail $59.99
Value $488.67
Growth  +714.6%
Annual growth 6.3%

2914 Rescue Base

Theme / Subtheme Duplo / Action Wheelers
Year 2000
Pieces / Duplo figures 44 / 3
Availability Retired
The set builds a fire truck, an airplane, and a motorcycle using the Action Wheelers/Toolo screw system with a child-safe screwdriver.
2914 LEGO Duplo Action Wheelers Rescue Base
Retail $49.99
Value $487.30
Growth  +874.8%
Annual growth 4.3%

082 LEGOVille

Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 66 / 7
Availability Retired
It was only released in the United States.
082 Duplo PreSchool LEGOVille
Retail $6.00
Value $485.96
Growth  +7999.3%
Annual growth 9.2%

080-3 Police Station

Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 28 / 4
Availability Retired
The build centers on a small police station using yellow and blue Duplo bricks, door and window frames, an arch element, and printed “POLICE” bricks, alongside a blue car base with red wheels.
080-3 LEGO Duplo PreSchool Police Station
Retail $5.50
Value $484.51
Growth  +8709.3%
Annual growth 6.6%

2949 Remote Control Dozer

Theme / Subtheme Duplo / Action Wheelers
Year 2001
Pieces / Duplo figures 21 / 1
Availability Retired
This was the first remote controlled DUPLO set. It consists of a versatile radio-controlled car with a shovel truck option and a screwdriver for assembly, featuring an infrared remote control.
2949 LEGO Duplo Action Wheelers Remote Control Dozer
Retail $34.99
Value $467.96
Growth  +1237.4%
Annual growth 6.5%

2989 Pooh's Honeypot

Theme / Subtheme Duplo / Winnie the Pooh
Year 2000
Pieces / Duplo figures 44 / 2
Availability Retired
It consists of DUPLO elements to build settings such as a bridge and a tree, along with figures representing Winnie the Pooh and his friends.
2989 LEGO Duplo Winnie the Pooh Pooh's Honeypot
Retail $19.99
Value $461.52
Growth  +2208.8%
Annual growth 7.1%

7840 Airport Action Set

Theme / Subtheme Duplo / Airport
Year 2005
Pieces / Duplo figures 103 / 5
Availability Retired
The set builds a white-and-blue airplane with two doors for passenger access and a separate cargo hold, along with a forklift, a small service truck, an airport control tower, and an engine service station.
7840 LEGO Duplo Airport Action Set
Retail $79.99
Value $444.69
Growth  +455.9%
Annual growth 9.5%

524 DUPLO Town

Theme Duplo
Year 1977
Pieces / Duplo figures 54 / 7
Availability Retired
It is an early town-era assortment with doors and windows, two car bases, and printed signage bricks including HOTEL, CAFE, SUPERMARKET, LEGOVILLE, and Boutique.
524 LEGO DUPLO Town
Retail $6.99
Value $431.89
Growth  +6078.7%
Annual growth 8.8%

10505 Play House

Theme Duplo
Year 2013
Pieces / Duplo figures 83 / 3
Availability Retired
It features a 3-story structure with a kitchen, bathroom, rooftop bedroom, and changeable wallpaper. It includes three DUPLO figures, a cat, and items like bread, fruit, a pot, and a coffee can.
10505 LEGO Duplo Play House
Retail $59.99
Value $399.00
Growth  +565.1%
Annual growth 9.4%

4776 Dragon Tower

Theme / Subtheme Duplo / Castle
Year 2004
Pieces / Duplo figures 63 / 2
Availability Retired
The set builds a medieval tower with a working drawbridge and water base elements, complemented by hinged wall sections and a trapdoor opening.
4776 LEGO Duplo Castle Dragon Tower
Retail $29.99
Value $396.24
Growth  +1221.2%
Annual growth 7.6%
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