Trains consists of 208 sets that ran from 1966 to 2006. Most sets were released in 1980 which accounted for 28 sets. It is comprised of 5 subthemes with the most sets in 4.5V / 12V, consisting of 83 sets. As of today, the average annual growth of sets in Trains is approximately 4.7% per year.
Most valuable Trains set
7750 Steam Engine with Tender $6,956.59
Highest growth Trains set
180 4.5V Train with 5 Wagons +28551.38%
Largest Trains set
10173 Holiday Train 965 pieces
Most owned Trains set
4515 Straight Rails
LEGO Trains is one of the longer running themes that dates back from 1966 and ran up until 2006. During its run there were multiple sets released running on various power platforms from 4.5volt, to 9 and 12 volt sets. Later in 2011 LEGO released additional train sets using RC and Power Functions controllers under different themes like City.

45V
The LEGO 4.5V train theme ran from 1966 until 1971 and contained 39 sets in all. The 4.5V trains used to be the voltage standard for the first electric LEGO components where the power came from a battery box with 3x 1.5V batteries.

4.5V/12V
In 1969 LEGO released the 12 volt train sets as part of the Blue Era which was named because of the rail color. In 1972 LEGO released the 4.5V and 12V train sets as part of the Blue Era which was named because of the rail color. These train sets used additional conductor rails mounted between the standard 4.5V rails and 12V motors contained in the same housings as the 4.5V motors

9V
The introduction of the 9V LEGO trains in 1991 marked the end of the 4 and 12 volt sets. These 9V trains were characterized by integral molded dark Grey rail and tie assemblies with metal conducting rails which was later integrated in the LEGO World City theme line.
1 to 50 of 208 sets

10173 Holiday Train

Theme / Subtheme Trains / 9V
Year 2006
Pieces / Minifigs 965 / 7
Availability Retired
10173 LEGO Holiday Train
Retail $89.99
Value $685.73
Growth  +662.0%
Annual growth 5.3%

4206 9V Train Switching Track Collection

Theme / Subtheme Trains / 9V
Year 2006
Pieces 27
Availability Retired
4206 LEGO 9V Train Switching Track Collection
Retail $44.99
Value $56.76
Growth  +26.2%
Annual growth 1.5%

2159 9V Train Track Starter Collection

Theme / Subtheme Trains / 9V
Year 2006
Pieces 24
Availability Retired
2159 LEGO 9V Train Track Starter Collection
Retail $29.99
Value $57.78
Growth  +92.7%
Annual growth 2.8%

10133 Burlington Northern Santa Fe BNSF Locomotive

Theme / Subtheme Trains / 9V
Year 2005
Pieces / Minifigs 407 / 2
Availability Retired
10133 LEGO Trains Burlington Northern Santa Fe BNSF Locomotive
Retail $39.99
Value $650.00
Growth  +1525.4%
Annual growth 6.6%

10170 TTX Intermodal Double-Stack Car

Theme / Subtheme Trains / 9V
Year 2005
Pieces 366
Availability Retired
10170 LEGO Trains TTX Intermodal Double-Stack Car
Retail $39.99
Value $389.26
Growth  +873.4%
Annual growth 7.3%

65537 Classic Freight Train

Theme / Subtheme Trains / Value Packs
Year 2004
Pieces 608
Availability Retired
65537 LEGO Classic Freight Train
Retail $79.99
Value $2,360.20
Growth  +2850.6%
Annual growth 13.3%

10078 Train Connection Wire

Theme / Subtheme Trains / 9V
Year 2003
Pieces 1
Availability Retired
10078 LEGO Train Connection Wire
Retail $8.99
Value $53.15
Growth  +491.2%
Annual growth 5.4%

65536 Co-Pack B

Theme / Subtheme Trains / Value Packs
Year 2002
Pieces 951
Availability Retired
65536 LEGO Trains Co-Pack B
Retail $79.99
Value $641.59
Growth  +702.1%
Annual growth 9.1%

4535 LEGO Express Deluxe

Theme / Subtheme Trains / 9V
Year 2002
Pieces 762
Availability Retired
4535 Trains LEGO Express Deluxe
Retail $179.99
Value $555.84
Growth  +208.8%
Annual growth 4.8%

4534 LEGO Express

Theme / Subtheme Trains / 9V
Year 2002
Pieces 456
Availability Retired
4534 Trains LEGO Express
Retail $159.99
Value $589.36
Growth  +268.4%
Annual growth 5.3%

10020-2 Santa Fe Super Chief Limited Edition

Theme / Subtheme Trains / 9V
Year 2002
Pieces / Minifigs 436 / 2
Availability Retired
10020-2 LEGO Trains Santa Fe Super Chief Limited Edition
Retail $39.99
Value $734.26
Growth  +1736.1%
Annual growth 6.4%

10020 Santa Fe Super Chief

Theme / Subtheme Trains / 9V
Year 2002
Pieces / Minifigs 435 / 2
Availability Retired
10020 LEGO Trains Santa Fe Super Chief
Retail $39.99
Value $569.02
Growth  +1322.9%
Annual growth 11.7%

10022 Santa Fe Cars Set II

Theme / Subtheme Trains / 9V
Year 2002
Pieces 411
Availability Retired
10022 LEGO Trains Santa Fe Cars Set II
Retail $34.99
Value $581.33
Growth  +1561.4%
Annual growth 6.0%

10025 Santa Fe Cars Set I

Theme / Subtheme Trains / 9V
Year 2002
Pieces 326
Availability Retired
10025 LEGO Trains Santa Fe Cars Set I
Retail $34.99
Value $541.33
Growth  +1447.1%
Annual growth 7.8%

10205 Large Black Train Engine with Tender

Theme / Subtheme Trains / 9V
Year 2002
Pieces 232
Availability Retired
10205 LEGO Large Black Train Engine with Tender
Retail $23.99
Value $305.65
Growth  +1174.1%
Annual growth 5.1%

4186876 Blue Passenger Wagon

Theme / Subtheme Trains / 9V
Year 2002
Pieces 192
Availability Retired
4186876 LEGO Trains Blue Passenger Wagon
Retail $24.99
Value $207.68
Growth  +731.1%
Annual growth 8.1%

4186875 Platform and Mini-Figures

Theme / Subtheme Trains / 9V
Year 2002
Pieces / Minifigs 47 / 5
Availability Retired
4186875 LEGO Trains Platform and Mini-Figures
Retail $19.99
Value $60.00
Growth  +200.2%
Annual growth 4.8%

10153 Train Motor 9 V

Theme / Subtheme Trains / 9V
Year 2002
Pieces 3
Availability Retired
10153 LEGO Train Motor 9 V
Retail $24.99
Value $159.50
Growth  +538.3%
Annual growth 4.9%

10001 Metroliner Legend

Theme / Subtheme Trains / 9V
Year 2001
Pieces / Minifigs 782 / 11
Availability Retired
10001 LEGO Trains Metroliner Legend
Retail $149.99
Value $1,200.00
Growth  +700.1%
Annual growth 6.2%

10002 Railroad Club Car

Theme / Subtheme Trains / 9V
Year 2001
Pieces / Minifigs 293 / 5
Availability Retired
10002 LEGO Trains Railroad Club Car
Retail $37.49
Value $592.70
Growth  +1481.0%
Annual growth 5.9%

10017 Hopper Wagon

Theme / Subtheme Trains / 9V
Year 2001
Pieces 228
Availability Retired
10017 LEGO Trains Hopper Wagon
Retail $19.99
Value $87.78
Growth  +339.1%
Annual growth 3.9%

10015 Green Passenger Wagon

Theme / Subtheme Trains / 9V
Year 2001
Pieces 194
Availability Retired
10015 LEGO Trains Green Passenger Wagon
Retail $19.99
Value $99.10
Growth  +395.7%
Annual growth 3.6%

10014 Caboose

Theme / Subtheme Trains / 9V
Year 2001
Pieces 170
Availability Retired
10014 LEGO Trains Caboose
Retail $14.99
Value $92.29
Growth  +515.7%
Annual growth 3.7%

10016 Tanker

Theme / Subtheme Trains / 9V
Year 2001
Pieces 128
Availability Retired
10016 LEGO Trains Tanker
Retail $19.99
Value $144.79
Growth  +624.3%
Annual growth 4.4%

10013 Open Freight Wagon

Theme / Subtheme Trains / 9V
Year 2001
Pieces 121
Availability Retired
10013 LEGO Trains Open Freight Wagon
Retail $16.99
Value $75.73
Growth  +345.7%
Annual growth 6.2%

3743 Locomotive Blue Bricks

Theme / Subtheme Trains / 9V
Year 2001
Pieces 106
Availability Retired
3743 LEGO Trains Locomotive Blue Bricks
Retail $6.99
Value $36.26
Growth  +418.7%
Annual growth 6.1%

3744 Locomotive Green Bricks

Theme / Subtheme Trains / 9V
Year 2001
Pieces 106
Availability Retired
3744 LEGO Trains Locomotive Green Bricks
Retail $6.99
Value $19.17
Growth  +174.2%
Annual growth 3.4%

3745 Locomotive Black Bricks

Theme / Subtheme Trains / 9V
Year 2001
Pieces 106
Availability Retired
3745 LEGO Trains Locomotive Black Bricks
Retail $6.99
Value $43.09
Growth  +516.5%
Annual growth 6.2%

3746 Locomotive Brown Bricks

Theme / Subtheme Trains / 9V
Year 2001
Pieces 106
Availability Retired
3746 LEGO Trains Locomotive Brown Bricks
Retail $6.99
Value $21.10
Growth  +201.9%
Annual growth 3.7%

3747 Locomotive Dark Grey Bricks

Theme / Subtheme Trains / 9V
Year 2001
Pieces 106
Availability Retired
3747 LEGO Trains Locomotive Dark Grey Bricks
Retail $6.99
Value $13.13
Growth  +87.8%
Annual growth 4.4%

3741 Large Locomotive

Theme / Subtheme Trains / 9V
Year 2001
Pieces 92
Availability Retired
3741 LEGO Trains Large Locomotive
Retail $19.99
Value $172.00
Growth  +760.4%
Annual growth 5.6%

3740 Small Locomotive

Theme / Subtheme Trains / 9V
Year 2001
Pieces 67
Availability Retired
3740 LEGO Trains Small Locomotive
Retail $14.99
Value $64.79
Growth  +332.2%
Annual growth 4.0%

3742 Tender

Theme / Subtheme Trains / 9V
Year 2001
Pieces 39
Availability Retired
3742 LEGO Trains Tender
Retail $10.99
Value $88.15
Growth  +702.1%
Annual growth 4.1%

3748 Light Unit for Train

Theme / Subtheme Trains / 9V
Year 2001
Pieces 4
Availability Retired
3748 LEGO Light Unit for Train
Retail $9.99
Value $29.81
Growth  +198.4%
Annual growth 3.5%

4561 Railway Express

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 665 / 9
Availability Retired
4561 LEGO Trains Railway Express
Retail $129.99
Value $440.00
Growth  +238.5%
Annual growth 3.7%

4560 Railway Express

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 658 / 9
Availability Retired
4560 LEGO Trains Railway Express
Retail $99.99
Value $597.22
Growth  +497.3%
Annual growth 6.8%

4556 Train Station

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 236 / 7
Availability Retired
4556 LEGO Train Station
Retail $41.99
Value $121.70
Growth  +189.8%
Annual growth 4.0%

4557 Freight Loading Station

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 215 / 2
Availability Retired
4557 LEGO Trains Freight Loading Station
Retail $29.99
Value $224.35
Growth  +648.1%
Annual growth 4.6%

4553 Train Wash

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 185 / 2
Availability Retired
4553 LEGO Train Wash
Retail $29.99
Value $161.27
Growth  +437.7%
Annual growth 6.4%

4541 Rail and Road Service Truck

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 122 / 2
Availability Retired
4541 LEGO Trains Rail and Road Service Truck
Retail $12.99
Value $95.00
Growth  +631.3%
Annual growth 4.3%

4533 Train Track Snow Remover

Theme / Subtheme Trains / 9V
Year 1999
Pieces / Minifigs 58 / 1
Availability Retired
4533 LEGO Train Track Snow Remover
Retail $8.99
Value $91.62
Growth  +919.1%
Annual growth 6.4%

4519 Rail Crossing

Theme / Subtheme Trains / 9V
Year 1999
Pieces 1
Availability Retired
4519 LEGO Trains Rail Crossing
Retail $9.99
Value $47.99
Growth  +380.4%
Annual growth 3.3%

3225 Classic Train

Theme / Subtheme Trains / 9V
Year 1998
Pieces / Minifigs 281 / 3
Availability Retired
3225 LEGO Classic Train
Retail $66.00
Value $396.88
Growth  +501.3%
Annual growth 6.6%

2585 Track Buggy with Station Master and Cool Kid

Theme / Subtheme Trains / 9V
Year 1998
Pieces / Minifigs 32 / 2
Availability Retired
2585 LEGO Trains Track Buggy with Station Master and Cool Kid
promotional
Value $47.62
Annual growth 6.0%

2126 Train Cars

Theme / Subtheme Trains / 9V
Year 1997
Pieces / Minifigs 378 / 5
Availability Retired
2126 LEGO Train Cars
Retail $69.50
Value $400.32
Growth  +476.0%
Annual growth 5.3%

4565 Freight and Crane Railway

Theme / Subtheme Trains / 9V
Year 1996
Pieces / Minifigs 914 / 3
Availability Retired
4565 LEGO Trains Freight and Crane Railway
Retail $139.99
Value $684.93
Growth  +389.3%
Annual growth 4.8%

4559 Cargo Railway

Theme / Subtheme Trains / 9V
Year 1996
Pieces / Minifigs 842 / 7
Availability Retired
4559 LEGO Trains Cargo Railway
Retail $129.99
Value $595.91
Growth  +358.4%
Annual growth 5.2%

2150 Train Station

Theme / Subtheme Trains / 9V
Year 1996
Pieces / Minifigs 599 / 8
Availability Retired
2150 LEGO Train Station
Retail $73.00
Value $644.34
Growth  +782.7%
Annual growth 7.5%

4532 Manual Level Crossing

Theme / Subtheme Trains / 9V
Year 1996
Pieces / Minifigs 135 / 1
Availability Retired
4532 LEGO Trains Manual Level Crossing
Retail $23.99
Value $146.84
Growth  +512.1%
Annual growth 3.5%

4555 Cargo Station

Theme / Subtheme Trains / 9V
Year 1995
Pieces / Minifigs 389 / 3
Availability Retired
4555 LEGO Trains Cargo Station
Retail $66.00
Value $827.36
Growth  +1153.6%
Annual growth 7.0%