Union Pacific Big Boy

Union Pacific Big Boy - class of 25 simple articulated 4-8-8-4 locomotives. Article “Union Pacific Big Boy” in Italian Wikipedia has 52.9 points for quality (as of July 1, 2026). The article contains 45 references and 12 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Italian) language version.

In June 2026 the article “Union Pacific Big Boy” was edited by 2 authors in Italian Wikipedia and written by 13 authors in all languages.

Since the creation of article “Union Pacific Big Boy”, its content was written by 34 registered users of Italian Wikipedia and edited by 769 registered Wikipedia users in all languages.

The article is cited 12 times in Italian Wikipedia and cited 300 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Italian): #6181 in September 2022
• Global: #2307 in May 2019

The highest popularity rank from 2008:

• Local (Italian): #65909 in December 2022
• Global: #10421 in June 2026

There are 19 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Union Pacific Big Boy		89.2218
2	Thai (th) ยูเนียนแปซิฟิก บิกบอย		74.0192
3	Italian (it) Union Pacific Big Boy		52.9132
4	German (de) UP-Klasse 4000		38.4993
5	Chinese (zh) 聯合太平洋鐵路巨人號蒸汽機車		36.6251
6	Polish (pl) Union Pacific 4000		34.6296
7	French (fr) Big Boy (locomotive)		32.0751
8	Japanese (ja) ユニオン・パシフィック鉄道4000形蒸気機関車		25.5019
9	Spanish (es) Big Boy (locomotora)		17.8729
10	Slovak (sk) Union Pacific Big Boy		17.0156

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "Union Pacific Big Boy" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Union Pacific Big Boy		3 541 864
2	German (de) UP-Klasse 4000		787 896
3	Japanese (ja) ユニオン・パシフィック鉄道4000形蒸気機関車		329 323
4	Russian (ru) Union Pacific Big Boy		285 350
5	Polish (pl) Union Pacific 4000		226 282
6	French (fr) Big Boy (locomotive)		219 664
7	Spanish (es) Big Boy (locomotora)		150 569
8	Italian (it) Union Pacific Big Boy		119 372
9	Czech (cs) Lokomotiva Big Boy		75 537
10	Hungarian (hu) Union Pacific 4000		69 366

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Union Pacific Big Boy" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Union Pacific Big Boy		83 830
2	German (de) UP-Klasse 4000		4 622
3	Japanese (ja) ユニオン・パシフィック鉄道4000形蒸気機関車		1 745
4	French (fr) Big Boy (locomotive)		1 248
5	Polish (pl) Union Pacific 4000		1 095
6	Spanish (es) Big Boy (locomotora)		1 035
7	Russian (ru) Union Pacific Big Boy		983
8	Italian (it) Union Pacific Big Boy		763
9	Chinese (zh) 聯合太平洋鐵路巨人號蒸汽機車		605
10	Czech (cs) Lokomotiva Big Boy		554

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Union Pacific Big Boy" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Union Pacific Big Boy		288
2	German (de) UP-Klasse 4000		120
3	French (fr) Big Boy (locomotive)		53
4	Japanese (ja) ユニオン・パシフィック鉄道4000形蒸気機関車		49
5	Italian (it) Union Pacific Big Boy		34
6	Polish (pl) Union Pacific 4000		34
7	Czech (cs) Lokomotiva Big Boy		29
8	Russian (ru) Union Pacific Big Boy		28
9	Hungarian (hu) Union Pacific 4000		23
10	Swedish (sv) 4-8-8-4 Big Boy		23

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Union Pacific Big Boy" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) Union Pacific Big Boy		7
2	Italian (it) Union Pacific Big Boy		2
3	German (de) UP-Klasse 4000		1
4	Polish (pl) Union Pacific 4000		1
5	Russian (ru) Union Pacific Big Boy		1
6	Slovak (sk) Union Pacific Big Boy		1
7	Belarusian (be) Union Pacific Big Boy		0
8	Czech (cs) Lokomotiva Big Boy		0
9	Spanish (es) Big Boy (locomotora)		0
10	French (fr) Big Boy (locomotive)		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Union Pacific Big Boy" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Union Pacific Big Boy		99
2	Japanese (ja) ユニオン・パシフィック鉄道4000形蒸気機関車		40
3	German (de) UP-Klasse 4000		28
4	Indonesian (id) Lokomotif Union Pacific Big Boy		27
5	Russian (ru) Union Pacific Big Boy		17
6	French (fr) Big Boy (locomotive)		14
7	Hungarian (hu) Union Pacific 4000		13
8	Italian (it) Union Pacific Big Boy		12
9	Spanish (es) Big Boy (locomotora)		11
10	Polish (pl) Union Pacific 4000		10

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#	Language	Value
be	Belarusian Union Pacific Big Boy
cs	Czech Lokomotiva Big Boy
de	German UP-Klasse 4000
en	English Union Pacific Big Boy
es	Spanish Big Boy (locomotora)
fr	French Big Boy (locomotive)
hu	Hungarian Union Pacific 4000
id	Indonesian Lokomotif Union Pacific Big Boy
it	Italian Union Pacific Big Boy
ja	Japanese ユニオン・パシフィック鉄道4000形蒸気機関車
la	Latin Big Boy (vaporitraha)
pl	Polish Union Pacific 4000
pt	Portuguese Big Boy (locomotiva a vapor)
ru	Russian Union Pacific Big Boy
sk	Slovak Union Pacific Big Boy
sl	Slovenian Lokomotiva Big Boy
sv	Swedish 4-8-8-4 Big Boy
th	Thai ยูเนียนแปซิฟิก บิกบอย
zh	Chinese 聯合太平洋鐵路巨人號蒸汽機車

Best Rank

Italian: #65909 12.2022

Global: #10421 06.2026

Best Rank

Italian: #6181 09.2022

Global: #2307 05.2019

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information