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LEGO Harry Potter 75978 Diagon Alley

20205,548 pieces17 minifigures

LEGO 75978 Diagon Alley

Specifications

Set number75978
Release year2020
Piece count5,548
Minifigures17
ThemeHarry Potter
Building instructionsDownload the instructions on lego.com

Where to buy set 75978

Also on: Amazon.co.uk · Amazon.ca

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LEGO set 75978 “Diagon Alley” depicts the shopping street from the Harry Potter universe. Released in 2020 in the Harry Potter theme, it contains 5548 pieces and builds a large urban setting from the licence.

Set 75978 focuses on Diagon Alley, the wizarding shopping street that plays a central role in the Harry Potter stories. Within the LEGO Harry Potter theme, it represents one of the major civilian locations of the licence, distinct from school based Hogwarts builds or smaller scene based sets.

The build uses 5548 pieces and is arranged around detailed shop fronts, accessible interiors and a streetscape format that brings several storefronts together.

The set is suited to display because of its scale and continuous street layout, while the minifigure selection and shop interiors support character based play. In a Harry Potter collection, it sits naturally alongside Hogwarts related models as a representation of the commercial side of the wizarding world.

Inventory of set 75978

The inventory of set 75978 lists 5,548 pieces, spare parts excluded: 1,072 different lots (one shape in one color) for 410 part shapes. The box also contains 140 spare parts, for small elements that are easy to lose.

Colors of set 75978

Main color: black, making up 14% of the parts, followed by dark bluish gray (12%) and reddish brown (8.7%).

ColorPartsShare
Black79114%
Dark Bluish Gray66112%
Reddish Brown4848.7%
Dark Tan4588.3%
Light Bluish Gray4488.1%
Orange4297.7%
Dark Red2324.2%
Tan1933.5%
Dark Brown1893.4%
Lavender1883.4%
Other colors (38)1,47127%

Part types

TypePartsShare
Plates1,14021%
Bricks77814%
Plates Special57910%
Tiles57510%
Bricks Special5189.3%
Windows and Doors3145.7%

Most common parts in set 75978

PartColorQuantity
Tile 2 x 2 with Groove 3068bDark Tan109
Glass for Window 1 x 2 x 2 Flat 60601Trans-Clear98
Plate 1 x 1 3024Dark Bluish Gray71
Window 1 x 2 x 2 Flat Front 60592Orange62
Brick Special 1 x 2 with Masonry Brick Profile 98283Dark Tan56
Brick 1 x 4 3010Bright Pink51
Window 1 x 2 x 2 Flat Front 60592Black50
Plate 1 x 1 3024Orange44
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573Dark Bluish Gray42
Brick 1 x 1 3005Lavender42

340 of the 410 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 75978

14 part shapes in set 75978 appear in no other set in the catalog, most often printed elements, stickers or molds specific to the model. If one gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set. The table lists 8. Counting colors, 17 lots in the set are not found in any other set.

PartColor
Brick 1 x 2 x 5 without Side Supports with Red Windows print 46212pr0009Trans-Clear
Panel 1 x 6 x 5 with Green Windows Print 59349pr0010Trans-Clear
Sticker Sheet 4 for Set 75978-1 69369
Minifig Head Daily Prophet Photographer, Goatee Beard, Cheek Lines, Smile 3626cpr3317Light Nougat
Torso Robe Clasped at Neck, with Medium Lavender Fur Undershirt Print, Dark Brown Arms, Light Nougat Hands 973c07h02pr5326Dark Brown
Sticker Sheet 1 for Set 75978-1 69366
Sticker Sheet 2 for Set 75978-1 69367
Sticker Sheet 3 for Set 75978-1 69368

No similarly sized set supplies more than a quarter of its parts: set 75978 relies on a little-shared assortment.

Size of set 75978 within its line

With 5,548 pieces, set 75978 ranks #2 out of 186 Harry Potter sets in our database, which have an average of 672 parts. Among the 490 sets released in 2020, it ranks #2. That is 8.3 times the average Harry Potter set size.

Frequently asked questions

How many pieces does LEGO set 75978 Diagon Alley have?

LEGO set 75978 Diagon Alley has 5,548 pieces. It was released in 2020 as part of the Harry Potter theme.

What year was LEGO set 75978 released?

Set 75978 Diagon Alley was released in 2020 and belongs to the Harry Potter theme.

Which minifigures are included in set 75978?

Number of minifigures in LEGO set 75978 Diagon Alley: 17. Their names and quantities are listed in the “Included minifigures” section.

Where can I find the building instructions for set 75978?

The instructions for LEGO set 75978 Diagon Alley can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 75978.

What is the main color of LEGO set 75978?

Black, with 791 out of 5,548 pieces, or 14%. Next come dark bluish gray (12%) and reddish brown (8.7%).

How many different parts does set 75978 contain?

Set 75978 has 1,072 different lots (one shape in one color), covering 410 part shapes. Most common part: Tile 2 x 2 with Groove in dark tan, with 109 copies.

Does LEGO set 75978 contain any exclusive parts?

Yes: 14 part shapes exist in no other set, for example: Brick 1 x 2 x 5 without Side Supports with Red Windows print.

Does set 75978 focus on Hogwarts?

No. The subject is Diagon Alley, the wizarding shopping street, so it represents a different part of the Harry Potter setting.

Set number75978
Release year2020
ThemeHarry Potter
Piece count5,548
Minifigures17
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-30