LEGO Set 10255 Assembly Square: Pieces, Year, Figures

Specifications

Set number	10255
Release year	2017
Piece count	4,002
Minifigures	9
Theme	Modular Buildings
Building instructions	Download the instructions on lego.com

Where to buy set 10255

View on Amazon View on lego.com

Also on: Amazon.co.uk · Amazon.ca

Price and availability are provided by partner stores and may change at any time.

Affiliate links: this site may earn a commission, at no extra cost to you.

LEGO 10255, Assembly Square, depicts a modular urban block built around a square, with street life and varied building fronts, in the Modular Buildings theme. Released in 2017, it contains 4002 pieces and is designed for display, collection, and staged city scenes.

Assembly Square is a city focused model in the Modular Buildings theme. Rather than presenting a single isolated structure, it brings together a square, multiple façades, and everyday urban activity in a format suited to a modular street layout.

The set includes 4002 pieces and 9 minifigures. The mix of residents and occupations supports a busy neighborhood setting.

It suits builders who collect Modular Buildings, want a display piece with several points of interest, or need a setting for city role play. Within the theme, it works as a compact urban gathering place that can visually connect with other modular buildings.

Inventory of set 10255

The inventory of set 10255 lists 4,002 pieces, spare parts excluded: 674 different lots (one shape in one color) for 333 part shapes. The box also contains 139 spare parts, for small elements that are easy to lose.

Colors of set 10255

Main color: light bluish gray, making up 23% of the parts, followed by white (16%) and black (12%).

Color	Parts	Share
Light Bluish Gray	923	23%
White	634	16%
Black	490	12%
Dark Bluish Gray	397	9.9%
Tan	382	9.5%
Reddish Brown	154	3.8%
Sand Blue	154	3.8%
Dark Tan	127	3.2%
Medium Nougat	126	3.1%
Trans-Clear	107	2.7%
Other colors (33)	508	13%

Part types

Type	Parts	Share
Plates	709	18%
Tiles	607	15%
Bricks	544	14%
Plates Special	412	10%
Bricks Special	354	8.8%
Windows and Doors	207	5.2%

Most common parts in set 10255

Part	Color	Quantity
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Light Bluish Gray	84
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Tan	73
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	White	61
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) 54200	Medium Nougat	60
Tile 1 x 2 with Groove 3069b	Dark Bluish Gray	53
Brick 1 x 6 3009	Sand Blue	51
Tile 2 x 2 with Groove 3068b	Dark Bluish Gray	51
Brick Special 1 x 2 with Grille 2877	Sand Blue	50
Tile 1 x 2 with Groove 3069b	Medium Nougat	49
Plate 1 x 4 3710	Light Bluish Gray	49

294 of the 333 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 10255

2 part shapes in set 10255 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.

Part	Color
Torso Lab Coat with Pocket with Dentist Mirror and Pick and Gold Tooth Print, White Arms and Hands 973c27h27pr3708	White
Glass for Window 1 x 4 x 3 - Opening with "Prevent Yellowing", Tooth Logo and "DENTIST" Print 60603pr0005	Trans-Clear

Rebuilding set 10255 from another set

Share of the parts of set 10255 found in each of these similarly sized sets, counting shape, colour and quantity:

Set	Found	Parts	Release year
75419 Death Star	35%	9,031	2025
11377 The Lord of the Rings: Minas Tirith	31%	8,278	2026
75827 Firehouse Headquarters	30%	4,642	2016
10251 Brick Bank	26%	2,384	2016
75192 Millennium Falcon	25%	7,541	2017

No similarly sized set goes above 35%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 10255 within its line

With 4,002 pieces, set 10255 ranks #2 out of 22 Modular Buildings sets in our database, which have an average of 2,579 parts. Among the 457 sets released in 2017, it ranks #4.

Included minifigures

Baby, White Body - Head with neckQuantity : 1
DentistQuantity : 1
Medium Lavender Torso, Tan Legs, Dark Bluish Gray HairQuantity : 1
Bright Light Blue Torso, Jacket, Olive Green Legs, Dark Orange HairQuantity : 1
Red Torso Plaid, Dark Bluish Grey Legs, Reddish Brown HairQuantity : 1
Light Bluish Grey Torso, Dark Tan Legs, Mustache, BarrettQuantity : 1
Chef, Red Neckerchief, Light Bluish Gray Legs, No WrinklesQuantity : 1
Ballerina - Magenta Butterflies and NecklaceQuantity : 1
Barista, White Torso, Reddish Brown Apron, Sand Blue LegsQuantity : 1

Frequently asked questions

How many pieces does LEGO set 10255 Assembly Square have?

LEGO set 10255 Assembly Square has 4,002 pieces. It was released in 2017 as part of the Modular Buildings theme.

What year was LEGO set 10255 released?

Set 10255 Assembly Square was released in 2017 and belongs to the Modular Buildings theme.

Which minifigures are included in set 10255?

Number of minifigures in LEGO set 10255 Assembly Square: 9. Their names and quantities are listed in the “Included minifigures” section.

Where can I find the building instructions for set 10255?

The instructions for LEGO set 10255 Assembly Square can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 10255.

What is the main color of LEGO set 10255?

Light bluish gray, with 923 out of 4,002 pieces, or 23%. Next come white (16%) and black (12%).

How many different parts does set 10255 contain?

Set 10255 has 674 different lots (one shape in one color), covering 333 part shapes. Most common part: Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) in light bluish gray, with 84 copies.

Does LEGO set 10255 contain any exclusive parts?

Yes: 2 part shapes exist in no other set, for example: Torso Lab Coat with Pocket with Dentist Mirror and Pick and Gold Tooth Print, White Arms and Hands.

Which similarly sized set contains the most parts from set 10255?

Set 75419 Death Star, released in 2025: it supplies 35%, counting shapes, colors and quantities.

What makes the minifigure selection specific to this set’s subject?

Several figures are tied to recognizable city roles, including Dentist, Chef, Barista, and Ballerina, which reinforces the square and neighborhood setting.