LEGO Duplo Sets
1,447 items
LEGO Duplo uses larger bricks designed for toddlers and young children (roughly ages 1½ to 5) and is fully compatible with standard LEGO System. Sets cover trains, animals, towns, and early-learning play.
Duplo is bought and resold in large volumes, often in bulk lots. Compare LEGO Duplo sets on CollectORbuild to find complete sets or build up a collection affordably.
How much are LEGO Duplo sets worth? See the Duplo value guide →
Sign in to see which of the 1,447 Duplo sets you already own, and which you still need to complete the theme.
Frequently asked questions
How many LEGO Duplo sets are there?
CollectORbuild's catalog lists 1,447 LEGO Duplo sets, from current releases to retired and rare sets. Use the year and availability filters above to narrow by era or surface the ones that are retiring soon.
Where can I buy LEGO Duplo sets?
Open any Duplo set to compare live offers from independent sellers, each showing price, condition, and any seller notes. You can buy from several sellers in one cart, and the multi-store build optimizer finds the cheapest way to complete a set across stores.
How do I tell what a LEGO Duplo set is worth?
CollectORbuild tracks average new and used secondary-market values on the sets it prices, alongside the original RRP, so you can see what a Duplo set trades for today and how far it has moved from retail. Sort by price to put the most valuable Duplo sets first.