LEGO 21321 International Space Station: Set Guide

Specifications

Set number	21321
Release year	2020
Piece count	864
Minifigures	0
Theme	LEGO Ideas and CUUSOO
Building instructions	Download the instructions on lego.com

Where to buy set 21321

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LEGO set 21321, “International Space Station”, depicts the International Space Station within the LEGO Ideas and CUUSOO theme.

The model translates a recognizable orbital laboratory into LEGO form, using broad solar arrays, a central truss and modules arranged around the main structure. Within LEGO Ideas and CUUSOO, it belongs to the group of fan proposed concepts selected for official release, with a scientific real world subject rather than a fictional spacecraft or scene.

The build focuses on a slim, symmetrical profile that captures the station’s distinctive outline at a display scale. Its 864 pieces are used mainly for the arrays, module sections, connecting details and support elements.

International Space Station suits spaceflight enthusiasts, LEGO Ideas collectors and builders who prefer a factual model for display. Compared with other sets in the same theme, it stands out through its direct connection to contemporary scientific activity and through a wide horizontal composition shaped by panels, modules and structural balance.

Inventory of set 21321

The inventory of set 21321 lists 864 pieces, spare parts excluded: 186 different lots (one shape in one color) for 144 part shapes. The box also contains 27 spare parts, for small elements that are easy to lose.

Colors of set 21321

Main color: light bluish gray, making up 26% of the parts, followed by white (25%) and black (15%).

Color	Parts	Share
Light Bluish Gray	224	26%
White	218	25%
Black	132	15%
Dark Blue	112	13%
Dark Bluish Gray	89	10%
Pearl Gold	25	2.9%
Orange	19	2.2%
Blue	16	1.9%
Yellow	9	1%
Flat Silver	7	0.8%
Other colors (4)	13	1.5%

Part types

Type	Parts	Share
Plates	99	11%
Plates Special	94	11%
Tiles	89	10%
Bricks Sloped	79	9.1%
Tiles Special	76	8.8%
Bars, Ladders and Fences	69	8%

Most common parts in set 21321

Part	Color	Quantity
Tile 1 x 4 with Solar Panels Print 2431pr0115	Dark Blue	64
Tile Special 2 x 3 with 2 Clips without Tab between Clips with Solar Panel print 65886pr0008	Dark Blue	46
Bar 3L 87994	Light Bluish Gray	37
Plate Special 1 x 2 Rounded with 2 Open Studs 35480	Light Bluish Gray	23
Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders 24122	Dark Bluish Gray	16
Plate 2 x 12 2445	Orange	16
Plate 1 x 1 3024	Pearl Gold	16
Technic Brick 1 x 1 with Pin Hole 6541	Dark Bluish Gray	16
Brick Sloped 30° 1 x 2 x 2/3 85984	Light Bluish Gray	16
Brick Sloped 30° 1 x 2 x 2/3 85984	White	14

137 of the 144 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 21321

3 part shapes in set 21321 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
Flag 7 x 3 with Rod with Solar Panel print 30292pr0005	Dark Blue
Brick Round 2 x 2 Truncated Cone with Black Squares print 98100pr0010	Light Bluish Gray
Plate Special 4 x 6 with Studs on 3 Edges with ISS and 'International Space Station' print 6180pr0005	Black

No similarly sized set supplies more than a quarter of its parts: set 21321 relies on a little-shared assortment.

Size of set 21321 within its line

With 864 pieces, set 21321 ranks #55 out of 94 LEGO Ideas and CUUSOO sets in our database, which have an average of 1,279 parts. Among the 490 sets released in 2020, it ranks #61.

The set in 3D

Spin the official model of the set, brick by brick.

Load the 3D model

3D model: Orion Pobursky, LDraw.org Official Model Repository (CCAL 2.0 licence)

Frequently asked questions

How many pieces does LEGO set 21321 International Space Station have?

LEGO set 21321 International Space Station has 864 pieces. It was released in 2020 as part of the LEGO Ideas and CUUSOO theme.

What year was LEGO set 21321 released?

Set 21321 International Space Station was released in 2020 and belongs to the LEGO Ideas and CUUSOO theme.

Which minifigures are included in set 21321?

LEGO set 21321 International Space Station does not include any minifigures.

Where can I find the building instructions for set 21321?

The instructions for LEGO set 21321 International Space Station can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 21321.

What is the main color of LEGO set 21321?

Light bluish gray, with 224 out of 864 pieces, or 26%. Next come white (25%) and black (15%).

How many different parts does set 21321 contain?

Set 21321 has 186 different lots (one shape in one color), covering 144 part shapes. Most common part: Tile 1 x 4 with Solar Panels Print in dark blue, with 64 copies.

Does LEGO set 21321 contain any exclusive parts?

Yes: 3 part shapes exist in no other set, for example: Flag 7 x 3 with Rod with Solar Panel print.

Is this set part of a classic LEGO Space theme?

No. It is classified under LEGO Ideas and CUUSOO, although the subject itself is real spaceflight.